CN1290734A - Coke dry fire distinguishing method and fire distinguishing device - Google Patents
Coke dry fire distinguishing method and fire distinguishing device Download PDFInfo
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- CN1290734A CN1290734A CN00128671A CN00128671A CN1290734A CN 1290734 A CN1290734 A CN 1290734A CN 00128671 A CN00128671 A CN 00128671A CN 00128671 A CN00128671 A CN 00128671A CN 1290734 A CN1290734 A CN 1290734A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
Provided are a method and an apparatus for dry quenching coke causing no clinker deposit in ventilating a prechamber to improve safety by burning of combustible gas and coke breeze and in improving waste heat recovery and to provide fire extinguishing devices. The method for dry quenching coke comprises: possessing a quenching tower comprising a cooling chamber(2) and a prechamber(3) set at its upper part; introducing red-hot coke(9) from upper side, heat-exchanging sensible heat of the red-hot coke with a medium of an inert gas in the cooling chamber and heat-recovering as steam, and is characterized by blowing an air and water or steamat the same time.
Description
The present invention relates to coke dry fire distinguishing method and fire distinguishing device.
During the coke of the red heat of discharging from coke-fired furnace in cooling, in order to seek the energy-conservation coke dry fire distinguishing device (so-called CDQ (COKE DRYQUENCHER)) that using by the sensible heat that reclaims red-hot coke.
The dry fire distinguishing device has sensible heat heat exchange that red-hot coke is had and gives the not cooling room of reactive gas and the settling chamber on this cooling room top.Red-hot coke is packed into from the top of settling chamber in the settling chamber, and settling chamber is with the time fluctuation that absorbs the coke input and to obtain operational stability be that purpose is provided with.In cooling room, carry out heat exchange and after being cooled to nearly 200 ℃ with 950～1100 ℃ of coke of packing into reactive gas not, transported a certain amount ofly, the rare gas element that is heated to be 900 ℃ after the heat exchange is arranged to the circular channel from the top of cooling room, collect sharp device through 1 time and carry out recovery of heat, be sent to cooling room once more with recycle blower with waste heat boiler.
In the coke that is loaded into, contain volatile component and micro mist coke.Volatile component is because of its incendivity height, when containing it with height ratio in recycle gas, abnormal combustion might take place.Therefore, when being blown into air in the settling chamber, can make the volatile component and the burning of micro mist coke that remain in the coke briquette.Sometimes also by the part on the top layer of the air combustion red-hot coke that is blown into.Its result is mixed in the rare gas element by becoming pyritous air and burning and gas-exhausting, can increase from the heat of cooling room expellant gas.In addition, the temperature that arrives the coke of cooling room through settling chamber also rises, and therefore, the heat that is recycled in cooling room in the rare gas element also increases.Its result can increase the vapor recovery amount in the waste heat boiler.
Because the air to above-mentioned settling chamber is blown into, in the running of the dry fire distinguishing equipment of steady state, can increase the recovery of heat amount in the waste heat boiler, and under the temperature by feed rate that reduces fervid coke or the red-hot coke that reduction is packed into makes the grand low situation of coke temperature in the cooling room, also the recovery of heat amount in the waste heat boiler can be maintained necessarily.Open in the clear 61--37893 communique the spy and to disclose the method that in settling chamber, is blown into air.
Because be blown into the burn part of remaining volatile component, micro mist coke and lump coke of air in settling chamber, the temperature of the coke in air that is blown into and the settling chamber all becomes more than the temperature that drops into red-hot coke.And the temperature in settling chamber becomes 1200 ℃ all around the time, is contained in ash content fusion, gasification in the coke, and this ash content that has gasified is transferred with air.The rare gas element temperature that imports in the cooling room is 900 ℃ of front and back, the ash content that in settling chamber, has gasified in the inclination flue portion aggegation on cooling room top, adhere to.This dirt settling claims slag, causes the obturation of gas ventilation hole, has improved the ventilation impedance of gas, hinders the circulation of high temperature coke cooling with gas.
The purpose of this invention is to provide a kind of coke dry fire distinguishing method and fire distinguishing device, even this method and apparatus is in air is blown into pre-burner, pass through inflammable gas, when coke breeze charcoal burnings etc. realize the raising of security, realized under the situation of increase of waste heat recovery amount, do not take place adhering to of above-mentioned slag yet, and make the gas temperature that is supplied in boiler stable.
That is, technical scheme summary of the present invention is as follows:
(1) coke dry fire distinguishing method, has the quench tower 1 that the settling chamber 3 by cooling room 2 and its top constitutes, the red-hot coke 9 of packing into from the top, the sensible heat that this red-hot coke had is carried out heat exchange with lazy bosom gas as vehicle in cooling room, form with steam is carried out recovery of heat, it is characterized in that, the top from settling chamber 2 is blown into air 24 in settling chamber when, be blown into water or steam 26.
(2) as above-mentioned (1) described coke dry fire distinguishing method, it is characterized in that, for the temperature in the settling chamber 2 are become more than the temperature that drops into red-hot coke, below the specified temperature, adjust the amount of being blown into of water or steam 26 or be blown into a side or two sides of the amount of being blown into of the air 24 of settling chamber.
As above-mentioned (2) described coke dry fire distinguishing method, it is characterized in that (3) specified temperature in the above-mentioned settling chamber is 11.5 ℃.
(4) as any one the described coke dry fire distinguishing method in above-mentioned (1)～(3), it is characterized in that, in during before reaching waste heat boiler 7, air 25 is supplied in the high temperature of having discharged from quench tower 1 discharges the gas 22, make the one-tenth divided combustion in this discharge gas 22.
(5) as any one the described coke dry fire distinguishing method in above-mentioned (1)～(4), it is characterized in that, in during before arriving waste heat boiler 7 cryogenic rare gas element is supplied in the high temperature of discharging from quench tower 1 and discharges the gas 22, the temperature of waste heat boiler supply gas 23 is adjusted into temperature range low or regulation.
As above-mentioned (5) described coke dry fire distinguishing method, it is characterized in that (6) above-mentioned cryogenic rare gas element is a branch supplies with the gas 29 of a part of the rare gas element of cooling room.
(7) as above-mentioned (5) or (6) described coke dry fire distinguishing method, it is characterized in that, air 24 by will being blown into settling chamber and/or make an addition to water in the settling chamber or the adjustment and the usefulness of the adjustment of the amount of steam 26 and the low temperature amount of inert gas that is supplied in the high-temperature gas of discharging from cooling room and settling chamber during before arriving waste heat boiler is adjusted into the temperature of boiler supply gas 23 in the target temperature range.
(8) as any one described coke dry fire distinguishing method of above-mentioned (1)～(7), it is characterized in that, be blown into the nozzle that interior water of above-mentioned settling chamber or steam 26 are and use the air device for blowing 14 that is blown into usefulness in settling chamber.
As any one the described coke dry fire distinguishing method in above-mentioned (1)～(8), it is characterized in that (9) being blown into of the water in above-mentioned settling chamber becomes vaporific attitude with water and be blown into.
(10) coke dry fire distinguishing method, has the quench tower 1 that the settling chamber 3 by cooling room 2 and its top constitutes, the red-hot coke 9 of packing into from the top, the sensible heat that red-hot coke 9 is had carries out heat exchange with rare gas element as vehicle in cooling room, form with steam is advanced recovery of heat, it is characterized in that, air 24 is blown in the settling chamber from above-mentioned settling chamber top, adjust the above-mentioned amount of being blown into that is blown into the air 24 of settling chamber, so that the temperature in the above-mentioned settling chamber becomes below 1150 ℃.
(11) coke dry fire distinguishing device, it has quench tower 1 and waste heat boiler 7, this quench tower 1 is made of the cooling room 2 that sensible heat that red-hot coke had and rare gas element are carried out heat exchange and the settling chamber 3 on cooling room 2 tops, above-mentioned waste heat boiler 7 reclaims the heat of rare gas element with the form of steam, it is characterized in that having the device for blowing 14 that in this preheating chamber, is blown into air 24 and be blown into water in the same manner or the device for blowing 16 of steam 26 on above-mentioned settling chamber 3 tops.
(12) as above-mentioned (11) described coke dry fire distinguishing device, it is characterized in that, have the control device of being blown into 17, this be blown into control device 17 be adjust the amount of being blown into of water or steam 26 be blown into the side of the amount of being blown into of air 24 of settling chamber or two sides so that settling chamber 3 interior temperature become the device below 1150 ℃.
(13) as above-mentioned (11) or (12) described coke dry fire distinguishing device, it is characterized in that, from anti-inflammatory tower 1 to waste heat boiler the high-temperature gas exhaust pathway 7 be provided with supply be used for making the composition incendiary air of discharging gas 22 be blown into air assembly 15.
(14) as the described coke dry fire distinguishing device in above-mentioned (11)～(13), it is characterized in that, in that the high-temperature gas discharge path 7 has the rare gas element feedway from quench tower 1 to waste heat boiler, this rare gas element feedway is supplied with the low temperature rare gas element 29 that is used for the temperature range of the light low or regulation of the temperature modulation of waste heat boiler supply gas 23.
As above-mentioned (14) described coke dry fire distinguishing device, it is characterized in that (15) above-mentioned low temperature rare gas element feedway is the device 19 that the part of the rare gas element of branch's supply cooling room is supplied with.
(16) as above-mentioned (14) or (15) described coke dry fire distinguishing device, it is characterized in that, be provided with the air 24 that is blown into settling chamber and/or make an addition to water in the settling chamber or the amount of steam 26 and before arriving waste heat boiler during to the setting device of the low temperature amount of inert gas of from the high-temperature gas that cooling room and settling chamber are discharged, supplying with; Has the machine unit that is used for the temperature of boiler supply gas 23 is adjusted into target temperature range.
As any one described coke dry fire distinguishing device in above-mentioned (11)～(16), it is characterized in that (17) the nozzle double as that air is blown into the device for blowing 14 in the above-mentioned settling chamber is blown into the nozzle of water or steam.
(18) as any one the described coke dry fire distinguishing device in above-mentioned (11)～(17), it is characterized in that, water is blown into device for blowing in the above-mentioned settling chamber water is become vaporificly is blown into.
(19) coke dry fire distinguishing device, it is characterized in that, tool quench tower 1 and waste heat boiler 7, this quench tower 1 is made of the cooling room 2 of sensible heat that red-hot coke 9 is had and rare gas element heat exchange and the settling chamber 3 on this cooling room top, and this waste heat boiler 7 reclaims the heat of rare gas element with the form of steam; It is characterized in that, have the device for blowing 14 that air is blown in this settling chamber on above-mentioned settling chamber 3 tops, also have for temperature in the above-mentioned settling chamber is become below 1150 ℃ and adjust that the above-mentioned amount of being blown into that is blown into the air 24 of settling chamber uses be blown into control device 17.
(20) as any one the described coke dry fire distinguishing device in above-mentioned (12)～(19), it is characterized in that the temperature measuring in the settling chamber is to use the thermometer that inserts from the outside or the envrionment temperature of radiation thermometer instrumentation inner core brick bottom or the temperature measuring apparatus of coke temperature to carry out.
The present invention is to be blown into air 24 in the settling chamber as feature with water or steam 26.Water-based gas reaction when red-hot coke contacts with steam is the same reaction of advancing to absorb heat that produces hydrogen and carbon monoxide.Be blown under the situation of water, on the thermo-negative reaction that above-mentioned water-based gas reaction is produced, also increase the thermo-negative reaction when the water evaporation is arranged.Therefore, because the air in settling chamber is blown into, the pre-burning room temp becomes more than the temperature that drops into red-hot coke.In addition, by being blown into water or steam produces endothermic reaction in settling chamber, the result can remain the temperature in the settling chamber below the certain temperature.
Its result can prevent fusion, the gasification of the ash content in the settling chamber, can prevent to adhere on gas-circulating system slag.
Hydrogen that is produced by the water-based gas reaction and carbon monoxide are by the air that is blown in the settling chamber, its part is burnt immediately, remainingly be discharged to the circular channel 5 from cooling room 2 with rare gas element 27, in circular channel 5 or be sent in the gas outlet pipe 12 in the boiler and be blown into air 25, hydrogen and carbon monoxide are in the circular channel or vent pipe internal combustion heating, finally, in waste heat boiler 7, be recovered heat as steam.Therefore, because the water-based gas reaction, the pre-burning room temp reduces, and still, the final heat that reclaims has increased.
Fig. 1 is the sketch of coke dry fire distinguishing device of the present invention.
Fig. 2 is the air capacity that expression imports settling chamber, adds the figure of the relation of the amount of settling chamber water and pre-burning room temp to.
Fig. 3 is the air capacity that expression is blown into the circular channel, the figure of the relation of the boiler gas temperature of rare gas element addition and supply.
According to Fig. 1 embodiments of the invention are described.
The quench tower 1 of cooling red-hot coke forms longitudinal type, is provided with settling chamber 3 and cooling room 2 along the vertical direction.Settling chamber 3 and cooling room 2 are cut apart air-flow by the inclination flue portion 4 that is formed on its periphery of inner wall.
The red-hot coke 9 of the temperature that tool is about 980 ℃ is packed into from the top of settling chamber 3, moves to the below gradually, is cooled off by pipe 11 rare gas elementes that are blown into 27 that are blown into from the cooling room bottom in cooling room 2.The temperature of the coke 10 when discharging from the cooling room bottom is about 210 ℃.
The rare gas element 27 that is blown in cooling room 2 while rise and red-hot coke between carry out heat exchange, gas temperature rises, and is discharged to the circular channel 5 from the inclination flue portion 4 on cooling room top.In addition, rare gas element 5 is delivered to waste heat boiler 7 through No. 1 particle collector 6 from the circular channel, and in waste heat boiler 7, by recovery of heat, temperature is reduced to after 180 ℃ of front and back, is blown into once more in the cooling room 2 through recycle blower 8.
The air that is blown into and generate gas the settling chamber bottom with from below the rare gas element that rises mix, be discharged to the circular channel 5 from inclination flue 4, in circular channel 5 or gas outlet pipe 12, be blown into air 25, the carbonic oxide that in settling chamber, generates of burning and become carbonic acid gas.
In the present invention, also in settling chamber, be blown into water or steam 26 from settling chamber top by water or steam device for blowing 16, the water that is blown into evaporates and advances heat absorption when becoming steam, when steam carries out the water-based gas reaction and produces hydrogen and carbon monoxide by contacting with red-hot coke, and absorb heat.Therefore, by sucking water or steam, the gas in the settling chamber and the temperature of coke reduce, and by regulating the amount of being blown into of water or steam, can regulate the interior gas of settling chamber and the temperature of coke.
The hydrogen and the carbonic oxide that are produced by the water-based gas reaction descend in settling chamber, the rare gas element that comes with liter on the settling chamber bottom mixes, be discharged to the circular channel 5 from inclination flue portion 4, in circular channel 5 or gas outlet pipe 12, be blown into air 25, burning hydrogen and carbon monoxide and form water and carbonic acid gas.Simultaneously, increase the heat of supplying with through exhaust gas boiler gas 23 by this incendiary combustion heat.
As the result who is blown into water or steam in settling chamber, as above-mentioned, the heat that the supply waste heat boiler gas 23 of boiler input side is supplied with increases.Therefore, be blown under the situation of the present invention of water or steam, Yi Bian can in waste heat boiler, guarantee necessary heat, Yi Bian the air amount of being blown into that blows to settling chamber is reduced.That is, towards the air amount of being blown into of settling chamber with towards the amount of being blown into of the water or the steam of settling chamber, can be side by side the top temperature of settling chamber inside and gas volume and the gas temperature of supplying with waste heat boiler gas 23 be adjusted into the suitableeest condition of depositing by control.
Passing through the cooling red-hot coke, the heat height that rare gas element obtains, in the time of can fully guaranteeing to be supplied in the heat of waste heat boiler,, also can make temperature reduction in the settling chamber and only reduce the amount of being blown into that is blown into settling chamber air 24 even do not supply with water or steam from settling chamber.
The measuring method of pre-burning room temp comprises: from outside perforation wall thermometer is inserted and come near the inboard envrionment temperature of measuring chamber inner core brick or the method (18a) of coke temperature the settling chamber portion; With being inserted in the thermometer measure inner core brick temperature in the inner core brick or the method (18b) of envrionment temperature; With near method of temperature (18c) the occasionally contactless thermometer measure inner core of the thermoelectricity brick bottom; But temperature is as representative near this uses inner core brick bottom.Preferably use the envrionment temperature of the thermometer measure inner core brick bottom of the band protective tube that inserts from the outside, with radiation thermometer measure brick or coke temperature.The pre-burning room temp of measuring is delivered to not shown in the figures being blown in the control device 17, be blown into the amount of being blown into of control device 17 control water or steam 16 or air 24, so that this pre-burning room temp becomes target temperature.
Though the Ash in the coke powder had been considered to be in fusing more than 1400 ℃ originally,, the result shows that it just softens fusion at 1200 ℃ after having advanced test of many times.Especially, the tendency that under the situation of multicomponent system, has softening temperature to reduce.Considering half in the section of the settling chamber of 10m during temperature deviation, finding becomes the main benchmark that can become below 1500 ℃ in the operation with the pre-burning room temp.Consider that again when safe, situation about managing at low temperatures is effective from long-term stability operation aspect.
As the position that is blown into that is blown into air 24 and water or steam 26 from settling chamber top, in the space 31 that is blown into the top 30 of the red-hot coke layer in the settling chamber or is made of this red-hot coke laminar surface and settling chamber is best, when empty G﹠W or steam are blown in the red-hot coke layer 32, only be blown into this gas near coke in react, the dispersion of gas is inhomogeneous.Temperature distribution in the settling chamber section, the reactive deviation that produces.
The nozzle of the nozzle of air suction apparatus 14 and water or steam device for blowing 16 also can be distinguished individually setting, but, water or steam can be mixed into air and be blown in the nozzle, this blended gas is blown in the settling chamber 3, in addition, being blown into of water preferably becomes water vaporific being blown into.
The purpose that the temperature of air 24 in making settling chamber that is blown into from settling chamber top rises, make the volatile component that coke contained and the micro mist coke incendiary purpose of packing in addition.Therefore, even be not blown into the operational conditions of also carrying out sufficient waste heat recovery, also need to be blown into continuously frequently air even the operational conditions of dry fire distinguishing device is not carried out air.Though when in settling chamber, dropping into red-hot coke, to open the lid of packing into,, at this moment, be blown into gas blower owing to also can stop pressure under the state that the pressure equilibrium atmosphere is invaded.
For the waste heat boiler 7 that turns round efficiently, need be supplied in the gas 23 of waste heat boiler 7 with the certain temperature certain flow.In addition, need be blown into the air of specified amount frequently from settling chamber top.Therefore, from the input heat of red-hot coke under the situation fully, the temperature that produces 5 expellant gas 22 from the circular channel surpasses the proper temperature that feeds to above-mentioned waste heat boiler 7.
In the present invention, cryogenic rare gas element supplied to from the circular channel export to the circuit of No. 1 particle collector, by with 5 high-temperature gases of discharging mix from the circular channel, reduce temperature, can be temperature with the temperature maintenance of supplying with waste heat boiler gas 23 as target.The part of low temperature rare gas element that will supply to cooling room 2 from recycle blower 8 is preferably used this ramose cryogenic gas 29 by take-off pipe 19 branches as above-mentioned low temperature rare gas element.The temperature of waste heat boiler supply gas 23 can be adjusted by controlling this bypass gas amount.The flow of rare gas element 21 that is supplied in cooling room 2 is owing to only reduce the suitable degree of flow with this ramose gas 29, so the flow that is supplied in the gas 23 of waste heat boiler remains necessarily.
Below, the idea of gas temperature control is narrated.
When the temperature that drops into the red-hot coke of CDQ was 950 ℃, along with the increase towards the amount of being blown into of the air of settling chamber, as shown in Figure 2, pre-burning room temp, coke temperature rose together.Toward the air amount of being blown into of settling chamber by attached to the micro mist amount of coke on the coke surface that drops into, according to decisions such as remaining volatile quantities in the optimum coke that changes of destructive distillation state.
By in settling chamber, adding water or steam, as by illustrated in dotted line, the long and short dash line temperature reduce.
But, as above-mentionedly in settling chamber owing to water-based gas reaction or coal in the remaining reason of volatile component when inflammable gas is arranged, often be called in this manual and be blown into the circular channel air in the pipeline that circular channel and boiler go, being blown into air 25.
Thus, supply with the boiler gas temperature and rise,,, can manage as illustrated in fig. 3 to below the management ceiling temperature by increasing the amount of being blown into of rare gas element 29 in order to suppress it.
Except the input amount of the coke that drops into, because in temperature, the remaining content that is not easy to measure in the regular job that grades that evaporates into, supply with the boiler gas temperature and change, in order to be adjusted into target temperature, it is effective adjusting towards the air amount of being blown into of settling chamber and/or the amount of rare gas element 29.As Fig. 2, shown in Figure 3, adjust boiler supply gas method of temperature by the adjustment that is blown into the settling chamber air capacity and under the situation of in settling chamber, not adding water, also can use.
Be set at one regularly will being blown into the circular channel air capacity, can supply with the adjustment of boiler gas temperature by the increase and decrease of the amount of being blown into of rare gas element.In addition, use from the recycle blower outlet from gas that take-off pipe 19 comes out the time owing to can not consider the balance of all gas volumes, so the effect of easy control is arranged.
The air capacity that Fig. 3 represents to be blown into settling chamber is certain situation, even the change air capacity also can similarly be adjusted.
Used the present invention in coke dry refrigerating unit shown in Figure 1, cooling room 2 internal volumes of dry cold radiator cooler are 600m
3, the internal volume of settling chamber 3 is 300m
3With the red-hot coke 9 of 980 ℃ of the ability cooling temperatures of 170 tons/H, the temperature of the coke 10 of discharge is 210 ℃.The temperature that drops into red-hot coke by the substantial middle position of coke in the scraper bowl that will insert when packing the coke dry refrigerating unit into the central authorities of short transverse (longitudinal and transverse) at once.
Be blown into air 24 in the space 31 from settling chamber top to forming by red-hot coke upper face 30 and settling chamber.Being blown into air capacity is 7000 Nm
3/ H.In addition, the water or the steam 26 that are used to regulate the temperature in the settling chamber mix with air 24 in the pipe arrangement of air device for blowing 14, and this blended gas is blown in the settling chamber.
The pre-burning room temp is with experimental field measuring someway.The 1st kind of method; thermometer is inserted the part of wall structure taperization on settling chamber top (18a) from the outside; the 2nd kind of method is the inner core brick inside of thermometer being inserted the inside and outside circular channel of separating settling chamber, and the 3rd kind of method inserted the method (18c) of envrionment temperature of the thermometer measure inner core brick bottom of SUS system band protective tube from the outside.The 1st kind of method shows low slightly temperature, the 2nd, 3, the kind method shows all roughly the same temperature.Pre-burning room temp before importing air 1050 ℃ relatively rises to and has begun to import later 1200 ℃ of air, in contrast, from the pipe that is provided with nozzle at front end with water with 0.3t/h with 0.5km/cm
3Pressure be reduced to 1100 ℃ when disperse injecting air.
Because from the combustiblecomponents in the discharge gas 22 of quench tower the temperature of discharging gas is risen by burning, thus with air 25 with 4000nm
3/ n is blown in the gas outlet pipe 12.The vapor recovery amount increases to 105t/h with respect to common 100t/h owing to air imports, and adds water again in the pre-burning amount, is blown into by carrying out the circular channel air, is increased to 108t/h.
The suitable flow that is supplied in the gas of waste heat boiler 7 is 298000Nm
3/ H, proper temperature are 980 ℃, but rise to more than 1000 ℃ owing to being blown into air 25.In order to keep the appropriate value of this flow and temperature, will give take-off pipe 19 from the part branch that recycle blower 8 is supplied in the rare gas element of cooling room, with about 10000Nm
3/ N thus, can be controlled at below 980 ℃ supplying with the boiler gas temperature with 5 high-temperature gases of discharging mix from the circular channel
Under the situation that in settling chamber, is not blown into water or steam, only be blown into air, under the pre-burning room temp is situation about 1200 ℃, carried out the operation in 1 week after, its result has adhered to the dirt settling of about 100mm in inner core brick bottom.After temporarily this dirt settling being removed, by with the water smoke shape be distributed in the air, the pre-burning room temp is suppressed to when turning round below 1150 ℃, its result is at the non-cohesive slag of long-term operation process.
By the equipment identical with embodiment 1 be adjusted into the boiler supplying temperature from 970 ℃ to 980 ℃ trial run.The air amount of being blown into (24) towards settling chamber is provided with under meter in the pipe arrangement of air device for blowing 14.In being blown into circular channel air pipe arrangement 15, also be provided with under meter.Use from the gas of take-off pipe 19 and supply with rare gas element 29, under meter also is set in the middle of this pipe arrangement, setting can adjust each flow the adjustment valve, can be by defeated each flow and boiler supply gas temperature, oxygen in the recycle gas, the machine unit of the amount that each flow output of carbon monoxide % computing is suitable and the opening control device of each flow rate regulating valve.
The operation that drops into the coke furnace side of red-hot coke changes greatly, is unsettled input.With respect to boiler capacity evaporation generation 110t/h, with the level run before and after the 90t/h.
Because the dried slide of coke-fired furnace is insufficient, the combustible gas component that is contained in the coke button charcoal of input is many, with 8000Nm
3/ when air is blown into settling chamber, supplies with the boiler gas temperature and begin to rise, along with the amounts of hydrogen in the cycle gas composition increases, the amount of circular channel air 25 begins to increase, and the brick temperature of settling chamber bottom has risen to 1200 ℃.The machine unit action of the indication by detecting this temperature output increment rare gas element 29, control is located at the aperture that take-off pipe adjustment is midway opened.This machine unit has the function of control to the amount of the amount (24) of the air (24) that is blown into settling chamber, also has the function to the control of the amount of being blown into that is blown into spray water xi in the settling chamber.
Its result between the input time that stops red-hot coke about 10 minutes, in order to make supply boiler gas temperature stable, carries out the adjustment that volume sprays into air, and circular channel air 25 is also increased., drop into red-hot coke thereafter, when the pressure in the settling chamber is negative pressure, because when having imported minimizing settling chamber air and being blown into the logic of (24), owing to imported the logic that minimizing settling chamber air is blown into (24), so, the indication of output decrement.
Stable at coke-fired furnace, begin to concentrate when dropping into red-hot coke, supplying with the boiler gas temperature begins to rise, the air capacity that is blown into towards settling chamber often continues as principle is essential, and therefore, the pre-burning room temp begins to rise, the aproll of beginning in settling chamber, the numerical value of inner core brick temperature of lower meter is reduced to about 1100 ℃, because the combustible gas component in the recycle gas increases, the annular channel air is because automatic control also begins increment.
Its result, supply boiler gas temperature begins to rise, and at that time, the amount of rare gas element 29 increases, the result, supply boiler gas temperature is stablized and is managed in target temperature.
In addition, along with the amount of oxygen in the cycle gas composition increases, people also implement to carry out the method for setting of the amount of circular channel air 25, are judged to be automatic controlling party and can carry out meticulous adjustment.
As mentioned above, the present invention is blown into water or steam from the settling chamber top of coke dry fire distinguishing device with air, thus, can with the temperature maintenance in the settling chamber in suitable scope, can prevent slag when device adheres to, guarantee the recovery heat in the waste heat boiler.
Claims (20)
1. coke dry fire distinguishing method, has the quench tower 1 that the settling chamber 3 by cooling room 2 and its top constitutes, the red-hot coke 9 of packing into from the top, the sensible heat that this red-hot coke had is carried out heat exchange with lazy bosom gas as vehicle in cooling room, form with steam is carried out recovery of heat, it is characterized in that, the top from settling chamber 2 is blown into air 24 in settling chamber when, be blown into water or steam 26.
2. coke dry fire distinguishing method as claimed in claim 1, it is characterized in that, for the temperature in the settling chamber 2 are become more than the temperature that drops into red-hot coke, below the specified temperature, adjust the amount of being blown into of water or steam 26 or be blown into a side or two sides of the amount of being blown into of the air 24 of settling chamber.
3. coke dry fire distinguishing method as claimed in claim 2 is characterized in that, the specified temperature in the above-mentioned settling chamber is 11.5 ℃.
4. as any one the described coke dry fire distinguishing method in the claim 1～3, it is characterized in that, in during before reaching waste heat boiler 7, air 25 is supplied in the high temperature of having discharged from quench tower 1 discharges the gas 22, make the one-tenth divided combustion in this discharge gas 22.
5. as any one the described coke dry fire distinguishing method in the claim 1～4, it is characterized in that, in during before arriving waste heat boiler 7 cryogenic rare gas element is supplied in the high temperature of discharging from quench tower 1 and discharges the gas 22, the temperature of waste heat boiler supply gas 23 is adjusted into temperature range low or regulation.
6. coke dry fire distinguishing method as claimed in claim 5 is characterized in that, above-mentioned cryogenic rare gas element is a branch supplies with the gas 29 of a part of the rare gas element of cooling room.
7. as claim 5 or 6 described coke dry fire distinguishing methods, it is characterized in that, air 24 by will being blown into settling chamber and/or make an addition to water in the settling chamber or the adjustment and the usefulness of the adjustment of the amount of steam 26 and the low temperature amount of inert gas that is supplied in the high-temperature gas of discharging from cooling room and settling chamber during before arriving waste heat boiler is adjusted into the temperature of boiler supply gas 23 in the target temperature range.
8. as any one described coke dry fire distinguishing method of claim 1～7, it is characterized in that, be blown into the nozzle that interior water of above-mentioned settling chamber or steam 26 are and use the air device for blowing 14 that is blown into usefulness in settling chamber.
9. as any one the described coke dry fire distinguishing method in the claim 1～8, it is characterized in that being blown into of the water in above-mentioned settling chamber becomes vaporific attitude with water and be blown into.
10. coke dry fire distinguishing method, has the quench tower 1 that the settling chamber 3 by cooling room 2 and its top constitutes, the red-hot coke 9 of packing into from the top, the sensible heat that red-hot coke 9 is had carries out heat exchange with rare gas element as vehicle in cooling room, form with steam is advanced recovery of heat, it is characterized in that, air 24 is blown in the settling chamber from above-mentioned settling chamber top, adjust the above-mentioned amount of being blown into that is blown into the air 24 of settling chamber, so that the temperature in the above-mentioned settling chamber becomes below 1150 ℃.
11. coke dry fire distinguishing device, it has quench tower 1 and waste heat boiler 7, this quench tower 1 is made of the cooling room 2 that sensible heat that red-hot coke had and rare gas element are carried out heat exchange and the settling chamber 3 on cooling room 2 tops, above-mentioned waste heat boiler 7 reclaims the heat of rare gas element with the form of steam, it is characterized in that having the device for blowing 14 that in this preheating chamber, is blown into air 24 and be blown into water in the same manner or the device for blowing 16 of steam 26 on above-mentioned settling chamber 3 tops.
12. coke dry fire distinguishing device as claimed in claim 11, it is characterized in that, have the control device of being blown into 17, this be blown into control device 17 be adjust the amount of being blown into of water or steam 26 be blown into the side of the amount of being blown into of air 24 of settling chamber or two sides so that settling chamber 3 interior temperature become the device below 1150 ℃.
13. as claim 11 or 12 described coke dry fire distinguishing devices, it is characterized in that, from anti-inflammatory tower 1 to waste heat boiler the high-temperature gas exhaust pathway 7 be provided with supply be used for making the composition incendiary air of discharging gas 22 be blown into air assembly 15.
14. as any one the described coke dry fire distinguishing device in the claim 11～13, it is characterized in that, in that the high-temperature gas discharge path 7 has the rare gas element feedway from quench tower 1 to waste heat boiler, this rare gas element feedway is supplied with the low temperature rare gas element 29 that is used for the temperature range of the light low or regulation of the temperature modulation of waste heat boiler supply gas 23.
15. coke dry fire distinguishing device as claimed in claim 14 is characterized in that, above-mentioned low temperature rare gas element feedway is the device 19 that the part of the rare gas element of branch's supply cooling room is supplied with.
16. as claim 14 or 15 described coke dry fire distinguishing devices, it is characterized in that, be provided with the air 24 that is blown into settling chamber and/or make an addition to water in the settling chamber or the amount of steam 26 and before arriving waste heat boiler during to the setting device of the low temperature amount of inert gas of from the high-temperature gas that cooling room and settling chamber are discharged, supplying with; Has the machine unit that is used for the temperature of boiler supply gas 23 is adjusted into target temperature range.
17., it is characterized in that the nozzle double as that air is blown into the device for blowing 14 in the above-mentioned settling chamber is blown into the nozzle of water or steam as any one described coke dry fire distinguishing device in the claim 11～16.
18. any one the described coke dry fire distinguishing device as in the claim 11～17 is characterized in that, water is blown into device for blowing in the above-mentioned settling chamber water is become vaporificly is blown into.
19. coke dry fire distinguishing device, it is characterized in that, tool quench tower 1 and waste heat boiler 7, this quench tower 1 is made of the cooling room 2 of sensible heat that red-hot coke 9 is had and rare gas element heat exchange and the settling chamber 3 on this cooling room top, and this waste heat boiler 7 reclaims the heat of rare gas element with the form of steam; It is characterized in that, have the device for blowing 14 that air is blown in this settling chamber on above-mentioned settling chamber 3 tops, also have for temperature in the above-mentioned settling chamber is become below 1150 ℃ and adjust that the above-mentioned amount of being blown into that is blown into the air 24 of settling chamber uses be blown into control device 17.
20. as any one the described coke dry fire distinguishing device in the claim 12～19, it is characterized in that the temperature measuring in the settling chamber is to use the thermometer that inserts from the outside or the envrionment temperature of radiation thermometer instrumentation inner core brick bottom or the temperature measuring apparatus of coke temperature to carry out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP266072/1999 | 1999-09-20 | ||
| JP26607299 | 1999-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1290734A true CN1290734A (en) | 2001-04-11 |
| CN1150298C CN1150298C (en) | 2004-05-19 |
Family
ID=17425978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001286714A Expired - Lifetime CN1150298C (en) | 1999-09-20 | 2000-09-20 | Coke dry fire distinguishing method and fire distinguishing device |
Country Status (7)
| Country | Link |
|---|---|
| KR (1) | KR100393023B1 (en) |
| CN (1) | CN1150298C (en) |
| BR (1) | BR0004279B1 (en) |
| DE (1) | DE10046334B4 (en) |
| RO (1) | RO120555B1 (en) |
| TR (1) | TR200002708A2 (en) |
| TW (1) | TW591101B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142298B (en) * | 2005-03-17 | 2011-12-28 | 新日铁工程技术株式会社 | Device for blowing gas of dry type coke-extinguishing facility and method for operating the same |
| CN102304370A (en) * | 2002-08-29 | 2012-01-04 | 新日本制铁株式会社 | Coke dry quenching device |
| CN1675334B (en) * | 2002-08-12 | 2012-06-27 | 新日本制铁株式会社 | Air circulating/supplying method of CDQ and its system |
| CN1694943B (en) * | 2002-08-29 | 2012-10-10 | 新日本制铁株式会社 | Coke dry quenching method and system |
| CN114636316A (en) * | 2022-03-14 | 2022-06-17 | 苏州海陆重工股份有限公司 | Waste heat recovery system matched with HISMELT smelting reduction iron-making system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100716682B1 (en) * | 2005-02-25 | 2007-05-09 | 신닛뽄세이테쯔 카부시키카이샤 | Coke dry quenching method and system |
| KR101140279B1 (en) * | 2009-11-30 | 2012-04-27 | 주식회사 포스코 | Apparatus for sensing physical quantity and dust collector using the same |
| KR101220640B1 (en) * | 2010-12-27 | 2013-01-10 | 재단법인 포항산업과학연구원 | Cokes wet quencher |
| KR101389856B1 (en) * | 2012-06-08 | 2014-04-29 | 주식회사 포스코 | Coke Dry Quenching Facilities and operating method |
| CN109777906B (en) * | 2019-03-14 | 2023-08-15 | 石欣 | Device and method for producing metallized pellets by utilizing red coke high-temperature heat energy |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2853299C3 (en) * | 1978-12-09 | 1981-12-24 | Dr. C. Otto & Comp. Gmbh, 4630 Bochum | Operating method for a vertical chamber for continuous dry quenching of coke |
| JPH0678525B2 (en) * | 1984-07-31 | 1994-10-05 | 新日鐵化学株式会社 | Dry fire extinguishing method and apparatus |
| DE3826192A1 (en) * | 1988-08-02 | 1990-02-08 | Ruhrkohle Ag | DEVICE FOR TREATING DRY-COOLED COCKS |
| DE4036305A1 (en) * | 1989-11-14 | 1991-05-16 | Sumitomo Metal Ind | Optimum operation of coke dry quenching system - is based on processing of data from preceding operation |
| DE19756423A1 (en) * | 1997-12-18 | 1999-06-24 | Rag Ag | Slide valve in gas extraction channel of dry cooling shaft for coke |
-
2000
- 2000-09-19 BR BRPI0004279-0A patent/BR0004279B1/en not_active IP Right Cessation
- 2000-09-19 DE DE10046334A patent/DE10046334B4/en not_active Expired - Lifetime
- 2000-09-19 KR KR10-2000-0054950A patent/KR100393023B1/en active IP Right Grant
- 2000-09-19 TW TW089119252A patent/TW591101B/en not_active IP Right Cessation
- 2000-09-19 RO ROA200000915A patent/RO120555B1/en unknown
- 2000-09-20 CN CNB001286714A patent/CN1150298C/en not_active Expired - Lifetime
- 2000-09-20 TR TR2000/02708A patent/TR200002708A2/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675334B (en) * | 2002-08-12 | 2012-06-27 | 新日本制铁株式会社 | Air circulating/supplying method of CDQ and its system |
| CN102304370A (en) * | 2002-08-29 | 2012-01-04 | 新日本制铁株式会社 | Coke dry quenching device |
| CN1694943B (en) * | 2002-08-29 | 2012-10-10 | 新日本制铁株式会社 | Coke dry quenching method and system |
| CN101142298B (en) * | 2005-03-17 | 2011-12-28 | 新日铁工程技术株式会社 | Device for blowing gas of dry type coke-extinguishing facility and method for operating the same |
| CN114636316A (en) * | 2022-03-14 | 2022-06-17 | 苏州海陆重工股份有限公司 | Waste heat recovery system matched with HISMELT smelting reduction iron-making system |
| CN114636316B (en) * | 2022-03-14 | 2024-01-26 | 苏州海陆重工股份有限公司 | Waste heat recovery system matched with HISMELT smelting reduction ironmaking system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010067195A (en) | 2001-07-12 |
| DE10046334A1 (en) | 2001-05-31 |
| BR0004279B1 (en) | 2011-03-22 |
| TW591101B (en) | 2004-06-11 |
| DE10046334B4 (en) | 2004-09-09 |
| TR200002708A2 (en) | 2001-04-20 |
| KR100393023B1 (en) | 2003-07-31 |
| CN1150298C (en) | 2004-05-19 |
| BR0004279A (en) | 2001-04-10 |
| RO120555B1 (en) | 2006-03-30 |
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Address after: Tokyo, Japan Patentee after: NIPPON STEEL & SUMITOMO METAL Corp. Address before: Tokyo, Japan Patentee before: NIPPON STEEL & SUMITOMO METAL Corp. Address after: Tokyo, Japan Patentee after: NIPPON STEEL & SUMITOMO METAL Corp. Address before: Tokyo, Japan Patentee before: NIPPON STEEL Corp. |
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