CN109681901B - Energy-saving and clean water gas combustion pipeline structure - Google Patents
Energy-saving and clean water gas combustion pipeline structure Download PDFInfo
- Publication number
- CN109681901B CN109681901B CN201811644728.2A CN201811644728A CN109681901B CN 109681901 B CN109681901 B CN 109681901B CN 201811644728 A CN201811644728 A CN 201811644728A CN 109681901 B CN109681901 B CN 109681901B
- Authority
- CN
- China
- Prior art keywords
- pipe
- gas
- water
- main
- pipe section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 159
- 238000009826 distribution Methods 0.000 claims abstract description 51
- 239000002737 fuel gas Substances 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- 210000000621 bronchi Anatomy 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000011269 tar Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 230000006872 improvement Effects 0.000 description 9
- 239000003345 natural gas Substances 0.000 description 8
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/005—Gaseous fuel from a central source to a plurality of burners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The embodiment of the invention discloses an energy-saving and clean water gas combustion pipeline structure, which comprises a pressure-stabilizing filter tube group and a gas distribution tube group, wherein the pressure-stabilizing filter tube group is used for stabilizing and filtering water gas supplied by a gas station; the fuel gas distribution pipe group is used for distributing the water gas treated by the pressure stabilizing filter pipe group to each burner of the kiln. By adopting the embodiment, the pressure stabilizing filter tube group can rapidly decompress, stabilize pressure, remove water and dust from water gas from a gas station and then send the water gas to a kiln for combustion. The gas distribution pipe group can further remove moisture in the water gas, and finally the water gas is respectively supplied to the upper burner and the lower burner of the kiln, so that the purpose that the upper burner and the lower burner of each combustion pipe group can respectively and independently control the temperature is achieved.
Description
Technical Field
The invention relates to the field of combustion systems of high-temperature furnaces (including kilns), in particular to a water gas combustion pipeline structure.
Background
Water gas (cold gas) is one of the fuels commonly used in ceramic tile kiln firing. Is produced by mixing steam and air to form gasifying agent and then flowing the gasifying agent through a hot fixed combustion bed. Oxygen and steam contained in the air react with carbon in the fuel to generate producer gas containing CO, CO 2、H2, CH compounds, N 2 and other components, and water and carbon dioxide are discharged after combustion, and trace CO, hydrocarbons, SO 2、NOX and the like are generated.
Although water gas has certain pollution, such as phenol water, dust (coal dust) and the like in the gas making and using processes, the water gas can be discharged up to the standard as long as the ceramic enterprises strengthen the environment-friendly treatment. In recent years, the government departments require that all kilns are changed into clean energy (such as natural gas and the like) in a plurality of ceramic production areas, but the natural gas supply is obviously insufficient once the kilns are changed, and the production of water gas has to be changed. China is a large country of coal production, has rich coal sources and low coal price, and the price of water gas is 40% -50% lower than that of natural gas under the condition of conversion into the same heat value, so that the water gas is still the main stream fuel for ceramic tile firing in China in a quite long time in the future.
In order to solve the problems of low heat value, pressure fluctuation, pollution and the like of the water gas, kiln manufacturers generally perform pressure stabilization, filtration, drainage and other treatments on the water gas, but the following problems still cannot be avoided after the water gas enters a kiln combustion pipeline:
(1) And (5) pollution. Although the water gas has passed through the treatment of the pressure reducing valve group, certain residual impurities such as water vapor, dust (coal dust), tar and the like still exist, the treatment is poor, and firstly, products can be polluted after combustion; secondly, water collection at high temperatures can lead to SIC combustion chamber cracking.
(2) And (5) corrosion. The coal contains sulfur, residual hydrogen sulfide, sulfur dioxide and the like exist after water gas is generated, and the coal has corrosiveness to metal pipelines, valve members and the like.
(3) Low heat value and pressure fluctuation.
In order to ensure that the water gas fuel can be smoothly and effectively used for kiln combustion temperature rise, a pipeline structure needs to be researched so as to be safely and efficiently used and achieve the effect of energy conservation.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide an energy-saving and clean water gas combustion pipeline structure which can be used for rapidly decompressing, stabilizing, dewatering and dedusting water gas from a gas station and then sending the water gas to a gas distribution pipe group, and respectively supplying the water gas to an upper burner and a lower burner through the gas distribution pipe group.
In order to solve the technical problems, the embodiment of the invention provides an energy-saving and clean water gas combustion pipeline structure which comprises a pressure-stabilizing filter tube group and a gas distribution tube group,
The pressure stabilizing filter tube group is used for stabilizing and filtering water gas supplied by the gas station;
The fuel gas distribution pipe group is used for distributing the water gas treated by the pressure stabilizing filter pipe group to each burner of the kiln;
The fuel gas distribution pipe group comprises a main fuel gas pipe, a combustion control pipe group, a fuel gas distribution transverse pipe, a fuel gas distribution longitudinal pipe, a burner branch pipe and a burner fuel gas filtering mechanism which are sequentially connected, wherein the burner fuel gas filtering mechanism is connected with a burner and supplies water gas for the burner; the combustion control tube group is positioned below the main fuel gas tube group, the fuel gas distribution transverse tube is positioned above the combustion control tube group, and fuel gas supplied by the main fuel gas tube group is downwards introduced into the combustion control tube group and then upwards introduced into the fuel gas distribution transverse tube.
As an improvement of the scheme, the combustion control tube group is used for automatically controlling the gas supply of burners in the group and comprises a main falling tube of the combustion tube group connected with a main gas tube and a combustion control group gas outlet tube, and an electric regulating valve and a pneumatic cut-off valve are arranged on the combustion control group gas outlet tube.
As an improvement of the above-mentioned scheme, the burner bronchus comprises an upper bend section connected with the gas distribution longitudinal pipe, a lower bend section formed by bending downwards from the upper bend section, and a downward extension section connected with the lower bend section.
As an improvement of the scheme, the bottom end of the main falling pipe of the combustion pipe group, the bottom of the longitudinal gas distribution pipe and the bottom of the burner gas filtering mechanism are connected with a water discharge control valve and a water discharge pipe.
As an improvement of the scheme, each gas distribution longitudinal pipe supplies gas for 4 burners below the gas distribution longitudinal pipe and positioned at the same height, and the combustion control pipe group simultaneously controls the gas supply quantity of 8 corresponding burners.
As an improvement of the scheme, the pressure stabilizing filter tube group comprises
The main pipe section is provided with a main filter and an electric butterfly valve, the main filter is used for filtering dust, tar and water vapor in water gas, and the electric butterfly valve is used for controlling the circulation diameter of the main pipe section to play roles in pressure regulation and pressure reduction;
the water sedimentation tank is arranged at the front end of the main pipe section;
The water drain pipe is arranged at the bottom of the water sedimentation tank; the water drain pipe is sequentially connected with the air sealing pipe, the overflow pipe and the water collecting pipe; the air sealing pipe is a vertically arranged pipeline, and the overflow pipe is connected to the preset height of the air sealing pipe.
As an improvement of the above scheme, the main pipe section is further provided with a high-pressure gauge and a low-pressure gauge, which are respectively arranged on the air inlet side and the air outlet side of the main filter.
As an improvement of the scheme, the main pipe section is also provided with a pneumatic cut-off valve and a bypass pipe section, and the pneumatic cut-off valve is arranged on the air inlet side of the electric butterfly valve;
The bypass pipe section comprises a first vertical bypass pipe section, a second vertical bypass pipe section, a third vertical bypass pipe section and a transverse bypass pipe section, an auxiliary filter is arranged on the transverse bypass pipe section, the first vertical bypass pipe section is connected with the feeding ends of the main filter and the auxiliary filter, the second vertical bypass pipe section is connected with the discharging ends of the main filter and the auxiliary filter, and the third vertical bypass pipe section is connected with the air outlet of the main pipe section and the air outlet of the transverse bypass pipe section.
As an improvement of the scheme, the bottoms of the main filter and the auxiliary filter are connected with a water collecting pipe; the bottoms of the first vertical bypass pipe section and the third vertical bypass pipe section are lower than the bottoms of the transverse bypass pipe sections, and the bottoms of the first vertical bypass pipe section and the third vertical bypass pipe section are connected with the water collecting pipe.
As an improvement of the scheme, the water collecting pipe is connected into the sealed gas tank, and the sealed gas tank is provided with an overflow valve.
The embodiment of the invention has the following beneficial effects:
By adopting the embodiment, the pressure stabilizing filter tube group can rapidly decompress, stabilize pressure, remove water and dust from water gas from a gas station and then send the water gas to a kiln for combustion. On the one hand, the pressure is ensured to be stable, and on the other hand, the water gas entering the kiln can be as clean as possible, so that the normal use is ensured, the pollution is small, and the purpose of improving the firing qualification rate of the product is achieved.
The gas distribution pipe group can further remove moisture in the water gas, and finally the water gas is respectively supplied to the upper burner and the lower burner, so that the purpose that the upper burner and the lower burner of each combustion pipe group can respectively and independently control the temperature is achieved.
Drawings
FIG. 1 is a schematic illustration of a pressure stabilizing filter tube set in an energy efficient, clean water gas combustion piping configuration of the present invention;
FIG. 2 is a schematic view of the overall construction of a fuel gas distribution tube set in an energy efficient, clean water gas combustion piping structure in accordance with the present invention;
FIG. 3 is a schematic view of the structure of the gas distribution tube group of the present invention connected to the burner on the roll;
Fig. 4 is an enlarged view of a portion a of fig. 3;
FIG. 5 is a schematic view of the structure of the gas distribution tube group of the present invention connected to the burner under the roll;
FIG. 6 is a schematic illustration of the connection of the present invention to a combustion control tube bank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present invention, are used only with reference to the drawings of the present invention, and are not meant to be limiting in any way.
As shown in FIG. 2, the total length of the kiln in the invention is composed of a plurality of module sections (or called single-section kiln), the length of each module section is 2.1 m/section, and the internal width is determined according to the specification, the process characteristics or the requirements of customers. The upper part and the lower part of each module section (the upper part or the lower part of a roller in the roller kiln structure or the upper part or the lower part of a product channel) are respectively provided with 4 burners (8 burners are respectively arranged at the upper part and the lower part) in the longitudinal direction, and 2 burners are arranged at each side in a staggered way and are positioned on the same horizontal plane, so that the temperature distribution of the section is uniform. The burners are respectively formed into 1 combustion control group by 4 (the upper part or the lower part of each module section) or 8 (the upper part or the lower part of each module section 2), the upper part and the lower part of each module section are separately controlled, and each group is provided with an independent electric control valve, a pneumatic cut-off valve, a thermocouple, a temperature control instrument and other devices for independently controlling the temperature. In order to facilitate adjustment of the temperature difference (including the upper and lower parts and the whole cross section of the product) in the kiln, the product in the kiln is taken as a boundary, burners are distributed in the upper and lower planes of the two side walls, and flames during combustion are respectively sprayed into the upper and lower channels of the product.
One side of the kiln is a transmission driving side used for installing a motor, a transmission device and the like, the other side of the kiln is a driven side (or called a driven side) used for loading and unloading the roller bars, and the combustion tube set is generally arranged on the driving side (the roller bars are frequently replaced on the other side, too many lower tubes block the roller bars), so that the height direction layout of the manual operation is facilitated. The main pipeline of each combustion tube group is connected from the upper part of the main gas supply pipe, the main pipeline is downwards from the driving side, is provided with a relevant valve and a bypass (for maintaining a valve member), then extends towards the kiln top, is distributed to two sides of the kiln wall, and finally supplies gas to the upper burner and the lower burner respectively, so that the purpose that the upper burner and the lower burner of each combustion tube group can control temperature independently is achieved.
With reference to fig. 1 and 3, the embodiment of the invention provides an energy-saving and clean water gas combustion pipeline structure, which comprises a pressure-stabilizing filter tube group and a gas distribution tube group,
The pressure stabilizing filter tube group is used for stabilizing and filtering water gas supplied by the gas station;
The fuel gas distribution pipe group is used for distributing the water gas treated by the pressure stabilizing filter pipe group to each burner of the kiln;
The fuel gas distribution pipe group comprises a main fuel gas pipe 31, a combustion control pipe group 32, a fuel gas distribution transverse pipe 33, a fuel gas distribution longitudinal pipe 34, a burner branch pipe 35 and a burner fuel gas filtering mechanism 36 which are sequentially connected, wherein the burner fuel gas filtering mechanism 36 is connected with a burner 37 and supplies water gas for the burner 37; the combustion control tube group 32 is located below the main gas tube group 31, the gas distribution transverse tube 33 is located above the combustion control tube group 32, and the gas supplied from the main gas tube group 31 is introduced into the combustion control tube group 32 downward and then introduced into the gas distribution transverse tube 33 upward.
The combustion chamber of the burner 37 is SISIC (the long-term use temperature can reach 1350 ℃), the advantages are high temperature resistance and quick heat transfer, the tubular structure of the burner 37 is lighter and more durable than that of the high-alumina burner 37, but the disadvantage is that the burner is burst due to stress concentration after water drops are hit at high temperature, firstly, flame is burnt in a kiln wall and cannot be effectively sprayed into the kiln, and secondly, the kiln wall is possibly burnt. Therefore, all the junctions of the transverse, longitudinal and vertical pipes of the combustion pipe group are all discharged from the top or the middle upper part of the pipe, and the bottom is provided with a water drain valve, so that no water is collected after the water gas enters the burner 37 as much as possible.
The specific structure of the pressure stabilizing filter tube group and the gas distribution tube group will be specifically described below.
The water gas sent from the gas station is firstly introduced into the pressure-stabilizing filter tube group, and is introduced into the main gas pipe 31 of the gas distribution tube group after pressure stabilization and filtration of the pressure-stabilizing filter tube group.
As shown in FIG. 1, the pressure stabilizing filter tube group comprises
The main pipe section 1 is provided with a main filter 2 and an electric butterfly valve 3, wherein the main filter 2 is used for filtering dust, tar and water vapor in water gas, and the electric butterfly valve 3 is used for controlling the circulation diameter of the main pipe section 1 to play roles in pressure regulation and pressure reduction; the water gas is finally sent out from the top of the left side of the main pipe section 1;
a water sedimentation tank 4 which is arranged at the front end of the main pipe section 1, and water gas is introduced from the top of the water sedimentation tank;
a drain pipe 5 provided at the bottom of the water precipitation tank 4; the water drain pipe 5 is sequentially connected with a gas sealing pipe 6, an overflow pipe 7 and a water collecting pipe 8; the sealing pipe 6 is a vertically arranged pipeline, and the overflow pipe 7 is connected to the sealing pipe 6 at a preset height.
By adopting the embodiment, the water gas from the gas station can be sent to the kiln for combustion after being rapidly decompressed, stabilized, dehydrated and dedusted. On the one hand, the pressure is ensured to be stable, and on the other hand, the water gas entering the kiln can be as clean as possible, so that the purposes of normal use and small pollution are achieved, and the firing qualification rate of the product is improved.
In order to solve the problem of unstable water gas pressure, the kiln using pressure (controlled between 5,000Pa and 8,000 Pa) is usually lower than the water gas station delivering pressure (about 10,000 Pa) to keep the adjustment margin, and an electric butterfly valve 3 (the function of pressure adjustment and decompression here) is arranged, a sensor and a pressure controller (arranged on an electric control cabinet) are stabilized to the set pressure required for production through the opening degree. Unlike available manual water draining, the present invention collects all condensed water into pipeline, develops air sealing pipe 6 and air sealing tank, and seals the gas with water pressure higher than water gas pressure, and the condensed water flows automatically to the phenol pond of ceramic enterprise for environment protection treatment. The device is safe and economical, reduces the labor intensity of operators, and prevents personnel from discharging phenol water in a mess to pollute the workshop environment. Besides the gas pressure can be observed in the control room, the main pipe section 1 is also provided with a high-pressure gauge 9 and a low-pressure gauge 10 which are respectively arranged on the air inlet side and the air outlet side of the main filter 2, and the gas pressure condition can be observed at any time on site. In addition, a pressure switch 21 is also arranged, and when the pressure is too low, the alarm can be automatically given, so that the use safety of the water gas is ensured. All valves are sealed by adopting a tetrafluoro lining, so that corrosion is prevented, and the valve is durable, safe and reliable.
The valve core is sucked up for ventilation under the electromagnetic action after the natural gas is automatically closed, but if the valve core is corroded, the valve core is easily blocked, and when the natural gas is required to be closed, the elastic force of the spring can not push the valve core to break the gas. Aiming at corrosive substances such as sulfur dioxide, water and the like in water gas, the electromagnetic valve is abandoned, and the pneumatic cut-off valve 11 is arranged on the main pipe section 1 and is arranged on the air inlet side of the electric butterfly valve 3, and when the kiln is stopped or other reasons need to be closed, the air is cut off.
In order to ensure long-term normal production, the scheme is provided with a bypass, and when devices such as a pressure regulating valve, a cut-off valve and the like are damaged or a filter screen is maintained or cleaned, water gas can be continuously supplied to the kiln through the bypass to maintain sintering. The bypass pipe section is connected with the main pipe section 1, the bypass pipe section includes first vertical bypass pipe section 12, second vertical bypass pipe section 13, third vertical bypass pipe section 14 and horizontal bypass pipe section 15, be equipped with auxiliary filter 16 on the horizontal bypass pipe section 15, first vertical bypass pipe section 12 is connected the inlet end of main filter 2 and auxiliary filter 16, second vertical bypass pipe section 13 is connected the outlet end of main filter 2 and auxiliary filter 16, third vertical bypass pipe section 14 is connected the outlet of main pipe section 1 with the outlet of horizontal bypass pipe section 15.
Because the heat value and the gas supply pressure of the water gas are lower (compared with the natural gas of 350KPa of a gas company), the pipe diameter with larger caliber is used as a gas supply pipeline to ensure enough and stable supply quantity, and valve elements such as a ball valve, a gate valve and the like are abandoned at the same time, and the safe and flexible butt-clamping type manual sealing butterfly valve 17 is used for switching; the two opposite hand-operated sealing butterfly valves 17 arranged on the main pipe section 1 are respectively arranged at the left side of the electric butterfly valve 3, the left side and the right side of the connection part of the second vertical bypass pipe section 13 and the main pipe section 1 and the right side of the main filter 2; for the manual sealing butterfly valves 17 of the opposite type provided on the bypass pipe sections, they are provided on the second vertical bypass pipe section 13, on the right side of the secondary filter 16 and on the right side of the third vertical bypass pipe section 14, respectively. The main pipe section 1 is provided with a bend section 22, and because of the large pipe diameter, the metering device also adopts a bend flow meter 18 for measuring the pressure difference at the pipe turn, which is arranged on the bend section 22.
Preferably, a plurality of layers of dense stainless steel filter elements are arranged in the main filter 2 and the auxiliary filter 16. For dust (coal dust), tar and other impurities in the water gas, a plurality of layers of dense stainless steel filter cores are used for filtering, and the water gas is cleaned and cleared after a certain time, and is continuously supplied to the kiln through a bypass in the cleaning process. The bottoms of the main filter 2 and the auxiliary filter 16 are connected with the water collecting pipe 8. The bottoms of the first vertical bypass pipe section 12 and the third vertical bypass pipe section 14 are lower than the bottoms of the transverse bypass pipe section 15, and the bottoms of the first vertical bypass pipe section 12 and the third vertical bypass pipe section 14 are connected with the water collecting pipe 8, so that condensed water in water gas sent to the kiln is reduced as much as possible. The water collecting pipe 8 is connected into the gas sealing tank 19, and the gas sealing tank 19 is provided with an overflow valve 20. A water permeable barrier is arranged in the gas sealing tank 19 and is used for increasing the resistance of the liquid flowing through and balancing the pressure of water gas in the system.
As shown in fig. 3,5 and 6, the gas distribution pipe group is used for distributing the water gas treated by the pressure stabilizing filter pipe group to each burner 37 of the kiln; the fuel gas distribution pipe group comprises a main fuel gas pipe 31, a combustion control pipe group 32, a fuel gas distribution transverse pipe 33, a fuel gas distribution longitudinal pipe 34, a burner branch pipe 35 and a burner fuel gas filtering mechanism 36 which are sequentially connected, wherein the burner fuel gas filtering mechanism 36 is connected with a burner 37 and supplies water gas for the burner 37; the combustion control tube group 32 is located below the main gas tube group 31, the gas distribution transverse tube 33 is located above the combustion control tube group 32, and the gas supplied from the main gas tube group 31 is introduced into the combustion control tube group 32 downward and then introduced into the gas distribution transverse tube 33 upward. The main gas pipe 31 is connected to the main pipe section 1. Preferably, each gas distribution longitudinal pipe 34 supplies 4 burners 37 located at the same height below it, and the combustion control pipe group 32 simultaneously controls the supply of 8 corresponding burners 37. Thereby dividing the kiln into a plurality of temperature control zones.
The combustion control tube set 32 is used for automatically controlling the gas supply of the burners 37 in the set, and comprises a main falling tube 321 connected with the main gas tube 31 and a combustion control tube set outlet tube 322, and an electric regulating valve 323 and a pneumatic cut-off valve 324 are arranged on the combustion control tube set outlet tube 322. The valve core is sucked up for ventilation under the electromagnetic action after the natural gas is automatically closed, but if the valve core is corroded, the valve core is easily blocked, and when the natural gas is required to be closed, the elastic force of the spring can not push the valve core to break the gas. Aiming at corrosive substances such as sulfur dioxide, water and the like in the water gas, the electromagnetic valve is abandoned, each combustion control group adopts the pneumatic cut-off valve 324, and when the kiln is stopped or other reasons need to be closed, the gas is cut off, so that the use safety of the kiln and the burner 37 is ensured. All valves are sealed by adopting a tetrafluoro lining, so that corrosion is prevented, and the valve is durable, safe and reliable.
To further intercept moisture in the water gas, in connection with fig. 4, the burner bronchus 35 includes an upper bent pipe section 351 connected to the gas distribution longitudinal pipe 34, a lower bent pipe section 352 formed by bending downward from the upper bent pipe section 351, and a downward extending pipe section 353 connected to the lower bent pipe section 352. The water gas combustion control tube bank 32 controls the flow and is returned to the kiln roof via the gas distribution longitudinal tube 34, the upper bend 351 of the burner bronchus 35 providing an obstruction to the flow of water gas, leaving water vapor and water droplets in the gas distribution longitudinal tube 34.
The bottom of the main pipe 321, the bottom of the longitudinal pipe 34 and the bottom of the burner gas filtering mechanism 36 are all connected with a water discharge control valve 38 and a water discharge pipe 39, and the water discharge pipe 39 is connected with the water discharge control valve 38. The bottom of the main pipe 321, the bottom of the longitudinal pipe 34 for distributing the fuel gas, and the water vapor collected at the bottom of the burner fuel gas filtering mechanism 36 can be concentrated and conducted to the water collecting pipe at the bottom of the kiln body through the water discharging pipe for centralized treatment.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. An energy-saving and clean water gas combustion pipeline structure is characterized by comprising a pressure stabilizing filter tube group and a fuel gas distribution tube group,
The pressure stabilizing filter tube group is used for stabilizing and filtering water gas supplied by the gas station;
The fuel gas distribution pipe group is used for distributing the water gas treated by the pressure stabilizing filter pipe group to each burner of the kiln;
The fuel gas distribution pipe group comprises a main fuel gas pipe, a combustion control pipe group, a fuel gas distribution transverse pipe, a fuel gas distribution longitudinal pipe, a burner branch pipe and a burner fuel gas filtering mechanism which are sequentially connected, wherein the burner fuel gas filtering mechanism is connected with a burner and supplies water gas for the burner; the combustion control tube group is positioned below the main fuel gas tube, the fuel gas distribution transverse tube is positioned above the combustion control tube group, and fuel gas supplied by the main fuel gas tube is downwards introduced into the combustion control tube group and then upwards introduced into the fuel gas distribution transverse tube;
The combustion control tube group is used for automatically controlling the gas supply of burners in the group and comprises a main falling tube of the combustion tube group and an air outlet tube of the combustion control group, which are connected with a main gas tube, and an electric regulating valve and a pneumatic cut-off valve are arranged on the air outlet tube of the combustion control group;
the pressure stabilizing filter tube group comprises
The main pipe section is provided with a main filter and an electric butterfly valve, the main filter is used for filtering dust, tar and water vapor in water gas, and the electric butterfly valve is used for controlling the circulation diameter of the main pipe section to play roles in pressure regulation and pressure reduction;
the water sedimentation tank is arranged at the front end of the main pipe section;
The water drain pipe is arranged at the bottom of the water sedimentation tank; the water drain pipe is sequentially connected with the air sealing pipe, the overflow pipe and the water collecting pipe; the air sealing pipe is a vertically arranged pipeline, and the overflow pipe is connected to the preset height of the air sealing pipe.
2. The energy efficient, clean water gas combustion piping structure according to claim 1, wherein said burner bronchus includes an upper bend section connected to the gas distribution longitudinal pipe, a lower bend section formed by bending downward from the upper bend section, and a downward extension section connected to the lower bend section.
3. The energy-saving clean water gas combustion pipeline structure as set forth in claim 2, wherein the bottom end of the main pipe of the combustion pipe set, the bottom of the gas distribution longitudinal pipe and the bottom of the burner gas filtering mechanism are all connected with a water discharge control valve and a water discharge pipe.
4. The energy-saving clean water gas combustion pipeline structure as set forth in claim 1, wherein each gas distribution longitudinal pipe supplies gas to 4 burners located at the same height below the gas distribution longitudinal pipe, and said combustion control pipe group simultaneously controls the gas supply amounts of 8 corresponding burners.
5. The energy efficient, clean water gas combustion piping structure according to claim 1, wherein said main pipe section is further provided with a high pressure gauge and a low pressure gauge, which are provided on the inlet side and the outlet side of the main filter, respectively.
6. The energy-saving clean water gas combustion pipeline structure according to claim 5, wherein the main pipe section is further provided with a pneumatic cut-off valve and a bypass pipe section, and the pneumatic cut-off valve is arranged on the air inlet side of the electric butterfly valve;
The bypass pipe section comprises a first vertical bypass pipe section, a second vertical bypass pipe section, a third vertical bypass pipe section and a transverse bypass pipe section, an auxiliary filter is arranged on the transverse bypass pipe section, the first vertical bypass pipe section is connected with the feeding ends of the main filter and the auxiliary filter, the second vertical bypass pipe section is connected with the discharging ends of the main filter and the auxiliary filter, and the third vertical bypass pipe section is connected with the air outlet of the main pipe section and the air outlet of the transverse bypass pipe section.
7. The energy-saving, clean water gas combustion pipeline structure according to claim 6, wherein bottoms of the main filter and the auxiliary filter are connected with a water collecting pipe; the bottoms of the first vertical bypass pipe section and the third vertical bypass pipe section are lower than the bottoms of the transverse bypass pipe sections, and the bottoms of the first vertical bypass pipe section and the third vertical bypass pipe section are connected with the water collecting pipe.
8. The energy efficient, clean water gas combustion piping structure according to claim 7, wherein said water collecting pipe is connected to a gas sealing tank, and said gas sealing tank is provided with an overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644728.2A CN109681901B (en) | 2018-12-30 | 2018-12-30 | Energy-saving and clean water gas combustion pipeline structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644728.2A CN109681901B (en) | 2018-12-30 | 2018-12-30 | Energy-saving and clean water gas combustion pipeline structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109681901A CN109681901A (en) | 2019-04-26 |
| CN109681901B true CN109681901B (en) | 2024-05-14 |
Family
ID=66191440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811644728.2A Active CN109681901B (en) | 2018-12-30 | 2018-12-30 | Energy-saving and clean water gas combustion pipeline structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681901B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108131A (en) * | 2019-05-24 | 2019-08-09 | 广东中鹏热能科技有限公司 | A kind of automatically controlled automatic row's phenol water system of kiln |
| CN110487073B (en) * | 2019-08-28 | 2024-05-28 | 佛山市德力泰科技有限公司 | Energy-saving partition-free double-layer roller kiln |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202521629U (en) * | 2012-05-02 | 2012-11-07 | 华美洁具有限公司 | Natural gas three-level pressure regulating device of shuttle kiln |
| CN105202912A (en) * | 2015-10-23 | 2015-12-30 | 青岛铸英特陶科技有限公司 | Gas roller way kiln |
| CN105627297A (en) * | 2016-02-17 | 2016-06-01 | 无锡顺鼎阿泰克科技有限公司 | Total oxygen kiln combustion control system with coal tar and natural gas being mixed |
| CN207299911U (en) * | 2017-07-21 | 2018-05-01 | 佛山市高明区新粤丰建材有限公司 | A kind of ceramic roller kiln metabolic water gas safety device |
| CN210128364U (en) * | 2018-12-30 | 2020-03-06 | 佛山市德力泰科技有限公司 | Energy-saving and clean water gas combustion pipeline structure |
-
2018
- 2018-12-30 CN CN201811644728.2A patent/CN109681901B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202521629U (en) * | 2012-05-02 | 2012-11-07 | 华美洁具有限公司 | Natural gas three-level pressure regulating device of shuttle kiln |
| CN105202912A (en) * | 2015-10-23 | 2015-12-30 | 青岛铸英特陶科技有限公司 | Gas roller way kiln |
| CN105627297A (en) * | 2016-02-17 | 2016-06-01 | 无锡顺鼎阿泰克科技有限公司 | Total oxygen kiln combustion control system with coal tar and natural gas being mixed |
| CN207299911U (en) * | 2017-07-21 | 2018-05-01 | 佛山市高明区新粤丰建材有限公司 | A kind of ceramic roller kiln metabolic water gas safety device |
| CN210128364U (en) * | 2018-12-30 | 2020-03-06 | 佛山市德力泰科技有限公司 | Energy-saving and clean water gas combustion pipeline structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109681901A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9410096B2 (en) | Method and system for cooling and washing biomass syngas | |
| CN109681901B (en) | Energy-saving and clean water gas combustion pipeline structure | |
| CN107178814A (en) | A kind of thermal power plant boiler fume afterheat is used for the energy conserving system of central heating | |
| CN100443847C (en) | Tube type heating furnace | |
| CN210128364U (en) | Energy-saving and clean water gas combustion pipeline structure | |
| KR0177201B1 (en) | Thermal decoking of cracking ovens and coolers | |
| CN209840150U (en) | Efficient pressure-stabilizing filtering valve set for water gas fuel | |
| CN109681902B (en) | Pressure stabilizing filter valve group for water gas fuel | |
| RU2390749C2 (en) | Probe and system for removal of gases from process equipment | |
| JP7398426B2 (en) | Heat recovery equipment and heat recovery method | |
| CN211726938U (en) | Soil ex-situ remediation thermal desorption device | |
| CN204717648U (en) | A kind of modular afterheat boiler | |
| CN204400922U (en) | A kind of biomass gasification burning is for the device of annealing furnace | |
| CN205241617U (en) | U -shaped pipe coal gas cleaning device | |
| KR960005786B1 (en) | Apparatus and method for recirculating waste heat and for preventing the heat exchanger from erosion | |
| CN215560067U (en) | Sectional type pyrolysis system | |
| RU42298U1 (en) | OIL EMULSION HEATER | |
| KR100863684B1 (en) | Apparatus for removing the impurities from the pipe for the cokes oven gas | |
| CN204177223U (en) | Be applied to the heat pipe economizer in Discussion on technology for production of SA with joint product cement from phosphogypsum equipment | |
| CN116336467A (en) | Regenerator grating dredging efficient combustion system | |
| CN204830482U (en) | Smoke waste heat recovery and discharge device of oil and gas field heating device | |
| CN204815985U (en) | Tail gas blowback system | |
| CN202124595U (en) | Coke oven flue gas pipe with drainage device | |
| CN204313359U (en) | A kind of internal combustion chemical reaction thermal power plant unit | |
| CN104906928A (en) | Ventilation air methane oxidation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |