CN205782863U - Oxygen-enriched combusting coal-powder boiler system - Google Patents
Oxygen-enriched combusting coal-powder boiler system Download PDFInfo
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- CN205782863U CN205782863U CN201620476133.0U CN201620476133U CN205782863U CN 205782863 U CN205782863 U CN 205782863U CN 201620476133 U CN201620476133 U CN 201620476133U CN 205782863 U CN205782863 U CN 205782863U
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- coal
- oxygen
- powder boiler
- burner
- enriched combusting
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
This utility model relates to field of boilers, particularly relates to a kind of oxygen-enriched combusting coal-powder boiler system, including: the burner that coal-powder boiler is connected with described coal-powder boiler, and for providing the air separation unit of oxygen；Described coal-powder boiler afterbody is equipped with smoke circulating device, and described smoke circulating device and air separation unit are connected with described burner by two gas circuits respectively.This utility model adds oxygen-enriched combusting by smoke circulating device and reduces boiler exhaust gas amount, reduces boiler exhaust gas heat loss, improves the integrated heat efficiency of boiler.
Description
Technical field
This utility model relates to field of boilers, particularly relates to a kind of oxygen-enriched combusting coal-powder boiler system.
Background technology
What in current boiler heat loss, accounting example was maximum is heat loss due to exhaust gas, typically can reach 4%～8%,
The principal element affecting heat loss due to exhaust gas is exhaust gas temperature and exhaust gas volumn, and prior art is substantially by fall
Low exhaust gas temperature reduces heat loss due to exhaust gas, and the reduction to the exhaust gas temperature of boiler at present nearly reaches pole
Limit, accordingly, it would be desirable to one can reduce boiler exhaust gas heat loss by reducing boiler exhaust gas amount,
Improve the coal-powder boiler system of the overall boiler thermal efficiency.
Utility model content
Originally it is that the purpose of utility model is to provide a kind of oxygen-enriched combusting coal-powder boiler system, above-mentioned to solve
Problem.
This utility model provides a kind of oxygen-enriched combusting coal-powder boiler system, including: coal-powder boiler and coal-powder boiler
The burner connected, and for providing the air separation unit of oxygen；Coal-powder boiler afterbody fills equipped with flue gas recirculation
Putting, smoke circulating device and air separation unit are connected with burner by two gas circuits respectively.
Further, smoke circulating device include high-temperature preheater, economizer, low-temperature pre-heater, cleaner unit,
Desulfurization denitration demercuration integrated device, dehydration device, high-temperature preheater is connected with burner and economizer, saves
Coal device is connected with low-temperature pre-heater, and low-temperature pre-heater is connected with high-temperature preheater by circulating fan, low temperature
Preheater is connected with cleaner unit, and cleaner unit is connected with desulfurization denitration demercuration integrated device, desulfurization denitration demercuration
Integrated device is connected with dehydration device by regulation valve.
Further, smoke circulating device also includes air-introduced machine, air-introduced machine one end and desulfurization denitration demercuration one
Device connects, and the other end is connected with chimney by regulation valve.
Further, this system also includes that pulverized coal warehouse, pulverized coal warehouse are connected with air separation unit and burner.
Compared with prior art, the beneficial effects of the utility model are: added oxygen-enriched by smoke circulating device
Burning reduces boiler exhaust gas amount, reduces boiler exhaust gas heat loss, improves the integrated heat efficiency of boiler.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model oxygen-enriched combusting coal-powder boiler system.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing and this utility model is done further retouch in detail
State.
Shown in ginseng Fig. 1, Fig. 1 is the structural representation of this utility model oxygen-enriched combusting coal-powder boiler system.
This utility model provides a kind of oxygen-enriched combusting coal-powder boiler system, including: coal-powder boiler 3 and coal dust
The burner 14 that stove 3 connects, and for providing the air separation unit 2 of oxygen；Coal-powder boiler 3 afterbody equipped with
Smoke circulating device, smoke circulating device and air separation unit 2 are respectively by two gas circuits with burner 14 even
Connect.
In the present embodiment, smoke circulating device includes that high-temperature preheater 13, economizer 12, low temperature are pre-
Hot device 10, cleaner unit 4, desulfurization denitration demercuration integrated device 5, dehydration device 9, high-temperature preheater 13
Being connected with burner 14 and economizer 12, economizer 12 is connected with low-temperature pre-heater 10, low-temperature prewarming
Device 10 is connected with high-temperature preheater 13 by circulating fan 11, and low-temperature pre-heater 10 is with cleaner unit 4 even
Connecing, cleaner unit 4 is connected with desulfurization denitration demercuration integrated device 5, and desulfurization denitration demercuration integrated device 5 leads to
Overregulate valve 7 to be connected with dehydration device 9.
In the present embodiment, smoke circulating device also includes that air-introduced machine 6, air-introduced machine 6 one end take off with desulfurization
Nitre demercuration integrated device 5 connects, and the other end is connected with chimney 8 by regulation valve 7.
In the present embodiment, this system also includes pulverized coal warehouse 1, pulverized coal warehouse 1 and air separation unit 2 and
Burner 14 connects.
The oxygen-enriched combusting coal-powder boiler system that the present embodiment provides, adds oxygen-enriched combusting by smoke circulating device and drops
Low boiler exhaust gas amount, reduces boiler exhaust gas heat loss, improves the integrated heat efficiency of boiler, meanwhile,
Decrease the energy consumption of cleaner unit, desulfurizer, reached energy-conservation purpose, and reduced smoke-discharging pollution.
Radiation heat transfer is the mode that boiler furnace heat exchange is main, by gas radiation feature, and only three atoms
Having radianting capacity with polyatomic gas, atomic gas is almost without radianting capacity.The generally oxygen in air
Volume content be 20.93%, nitrogen be 78.1% and a small amount of noble gas etc., really participate in burning
Oxygen duty gas total amount about 1/5, and the nitrogen of duty gas total amount about 4/5 and other noble gases
Not only the most combustion-supporting, substantial amounts of heat energy will be taken away along with the carrying out of burning on the contrary.People are more than oxygen content
The air of 20.93% is called oxygen-enriched air.Oxygen-enriched air participates in burning will have the most energy-conservation and ring
Protect effect.
This utility model uses oxygen-enriched air to replace air to do combustion-supporting gas, and oxygen-enriched air fills from space division
Putting 2, the oxygen that air separation unit 2 is made divides two-way, respectively with coal-powder boiler 3 afterbody after treatment
Circulating flue gas mixes, and after mixing, oxygen content gas is 21%～30%, enters as First air and secondary wind
Entering burner 14, isolated nitrogen can do the inert protective gas of Pulverized Coal Bin 1 and prevent its spontaneous combustion.
Coal-powder boiler 3 back-end ductwork is equipped with high-temperature preheater 13, economizer 12, low-temperature pre-heater 10, flue gas
After back-end ductwork is discharged again after removing dust device 4, desulfurization denitration demercuration integrated device 5 processing means,
A part introduces chimney 8 through air-introduced machine 6 and directly discharges, and another part removes part through dehydration device 9
After steam, then it is preheating to one through low-temperature pre-heater 10, circulating fan 11 and high-temperature preheater 13
Fixed temperature, it is First air and secondary wind that point two-way enters burner 14 with oxygen mix, combustion-supporting gas
Oxygen content 21%～30%, improves the ignition temperature of burner hearth, reduces boiler exhaust gas amount about 20%～33%,
The overall boiler thermal efficiency is made to improve 0.5%～1.9%.
The a series of detailed description of those listed above is only for feasibility of the present utility model and implements
Illustrating of mode, they are also not used to limit protection domain of the present utility model, all without departing from this reality
Equivalent implementations or the change made by novel skill spirit should be included in protection of the present utility model
Within the scope of.
It is obvious to a person skilled in the art that this utility model is not limited to above-mentioned one exemplary embodiment
Details, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to other
Concrete form realizes this utility model.Which point therefore, no matter from the point of view of, embodiment all should be regarded as
Exemplary, and be nonrestrictive, scope of the present utility model by claims rather than on
State bright restriction, it is intended that all changes that will fall in the implication of equivalency and scope of claim
Change and include in this utility model.
Claims (4)
1. an oxygen-enriched combusting coal-powder boiler system, it is characterised in that including: coal-powder boiler and described coal
The burner that powder stove connects, and for providing the air separation unit of oxygen；Described coal-powder boiler afterbody is equipped with cigarette
Gas circulating device, described smoke circulating device and air separation unit are respectively by two gas circuits with described burner even
Connect.
Oxygen-enriched combusting coal-powder boiler system the most according to claim 1, it is characterised in that described cigarette
Gas circulating device includes high-temperature preheater, economizer, low-temperature pre-heater, cleaner unit, desulfurization denitration demercuration
Integrated device, dehydration device, described high-temperature preheater is connected with described burner and economizer, described province
Coal device is connected with described low-temperature pre-heater, and described low-temperature pre-heater is by circulating fan and described high temperature preheating
Device connects, and described low-temperature pre-heater is connected with described cleaner unit, and described cleaner unit takes off with described desulphurization denitration
Hydrargyrum integrated device connects, and described desulfurization denitration demercuration integrated device is by regulation valve with described dehydration device even
Connect.
Oxygen-enriched combusting coal-powder boiler system the most according to claim 2, it is characterised in that described cigarette
Gas circulating device also includes air-introduced machine, and described air-introduced machine one end is with described desulfurization denitration demercuration integrated device even
Connecing, the other end is connected with chimney by regulation valve.
Oxygen-enriched combusting coal-powder boiler system the most according to claim 3, it is characterised in that also include
Pulverized coal warehouse, described pulverized coal warehouse is connected with described air separation unit and burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620476133.0U CN205782863U (en) | 2016-05-24 | 2016-05-24 | Oxygen-enriched combusting coal-powder boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620476133.0U CN205782863U (en) | 2016-05-24 | 2016-05-24 | Oxygen-enriched combusting coal-powder boiler system |
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| Publication Number | Publication Date |
|---|---|
| CN205782863U true CN205782863U (en) | 2016-12-07 |
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|---|---|---|---|
| CN201620476133.0U Active CN205782863U (en) | 2016-05-24 | 2016-05-24 | Oxygen-enriched combusting coal-powder boiler system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116062698A (en) * | 2021-10-30 | 2023-05-05 | 中国石油化工股份有限公司 | Air oxygen-enriched equipment, oxygen-enriched air supply system and oxygen-enriched combustion method |
-
2016
- 2016-05-24 CN CN201620476133.0U patent/CN205782863U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116062698A (en) * | 2021-10-30 | 2023-05-05 | 中国石油化工股份有限公司 | Air oxygen-enriched equipment, oxygen-enriched air supply system and oxygen-enriched combustion method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |