CN204768214U - Coal fired boiler flue gas desulfurization denitrification facility - Google Patents
Coal fired boiler flue gas desulfurization denitrification facility Download PDFInfo
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- CN204768214U CN204768214U CN201520400282.4U CN201520400282U CN204768214U CN 204768214 U CN204768214 U CN 204768214U CN 201520400282 U CN201520400282 U CN 201520400282U CN 204768214 U CN204768214 U CN 204768214U
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- absorber
- flue gas
- coal
- pump
- gas desulfurization
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model relates to a coal fired boiler flue gas desulfurization denitrification facility, the device sets up in the back that the three wastes thoughtlessly fire boiler electrostatic precipitator, mainly contains cooler, desulfurizer, circulating pump, hydrogen peroxide solution storage tank, absorption liquid make -up pump, dilute sulfuric acid storage tank in advance. Its principle utilizes hydrogen peroxide solution solution to absorb with the circulation of flue gas in the desulfurizer, sulfur dioxide and nitrogen oxide in the desorption tail gas, and outer selling is stored to the dilute sulfuric acid of formation.
Description
Technical field
The utility model relates to the out of stock process aspect of the coal gas such as synthetic ammonia, methyl alcohol industry three-waste mixed fired boiler tail gas desulfurization.This device is arranged on the back that the three wastes mix combusting boiler electric cleaner, mainly comprise pre-cooler, devulcanizer, circulating pump, hydrogen peroxide storage tank, absorbing liquid make-up pump, dilute sulfuric acid storage tank etc., utilize hydrogen peroxide solution in devulcanizer with the cyclic absorption of flue gas, remove the sulfur dioxide in tail gas and nitrogen oxide, the dilute sulfuric acid of generation stores outer selling.After flue gas desulfurization, sulfur dioxide in flue gas can be reduced to below 20mg/Nm3, and nitrogen oxide is reduced to 100mg/Nm
3below.
Background technology
The energy resource structure of China based on coal is one of principal element affecting China's atmosphere quality, 90% sulfur dioxide, 67% nitrogen oxide, 35% pellet, 70% smoke discharge amount come from the burning of coal, wherein, the smoke emissioning pollution problems such as coal fired power plant, coal-burned industrial boiler, coal-fired furnace kiln are the most outstanding, coal-fired flue-gas Environmental capacity is the important channel controlling air environmental pollution, and it is the emphasis controlling coal-fired flue-gas pollution that the dedusting of flue gas desulfuration and denitrification demercuration removes superfine particulate matter.Therefore, national environmental protection aspect is also more and more stricter to the requirement of manufacturing enterprise, and heat boiler exhaust smoke desulfurization problem is also more outstanding, is badly in need of solving.
Through retrieval, the kind that desulfurizing agent is pressed in current flue gas desulfurization divides, and mainly contains the calcium method based on lime stone, quick lime; Magnesium processes based on magnesia; Sodium method based on sodium sulfite, NaOH; Ammonia process based on synthetic ammonia;
All there is shortcoming in various degree in the method for above desulfurization, mainly flow process is complicated, investment is large, effect is unstable, and secondary waste thing is difficult to process.For more than, the utility model proposes a kind of new flue-gas desulfurizing device and method, configured by corresponding flow process, adopt hydrogen peroxide to be the desulphurization denitration that absorbent realizes coal-fired flue-gas, by-product dilute sulfuric acid quality better is easy to outer and sells disposal.
Summary of the invention
The purpose of this utility model solves above-mentioned the deficiencies in the prior art, provides that a kind of investment is little, effective, conveniently coal-burning boiler for flue gas desulfurization, denitration device.
The utility model realizes above-mentioned purpose, the technical scheme taked is: coal-burning boiler for flue gas desulfurization, denitration device, mainly comprise pre-cooler (1), absorber (2), demister (3), circulating pump (4), hydrogen peroxide storage tank (5), dioxygen water pump (6), dilute sulfuric acid storage tank (7) and the pipeline be connected thereof and annex, it is characterized in that: pre-cooler is connected with absorber gas feed; Circulating pump is imported and exported pipeline and is connected with spray equipment with absorber bottom respectively, and circulating-pump outlet install pipeline branch road a and branch road b, is connected with to dilute sulfuric acid storage tank pipeline with pre-cooler respectively; Hydrogen peroxide pump intake is connected with hydrogen peroxide reservoir outlet, and pump discharge is connected with inlet in the middle part of absorber; The supplementing water mouth of pipe is set in the middle part of absorber, supplements water pipe with technique and be connected; Absorber is connected with demister, and demister is further connected with emptying chimney.
Pre-cooler described in the utility model is cylinder-like structure, it is arranged spray nozzle and is connected with circulating-pump outlet bypass line a.
The spray nozzle that pre-cooler described in the utility model is arranged also can directly be connected with fresh water (FW) pipeline, directly lowers the temperature to flue gas before process with fresh water (FW).
Absorber described in the utility model can be packed tower, void tower, hypergravity machine.
Demister described in the utility model is one or more the combination in the tolerance dilute sulfuric acid corrosion silk screen of material, filler, can be arranged on absorber inside, can also be arranged on absorber outside.
Its idiographic flow step realized is:
The tail gas of boiler smoke after electric cleaner dedusting of higher temperature is generally 100 ~ 150 DEG C, first pre-cooler (1) is entered, the cooling liquid spray sprayed through circulating pump (3) branch road a reduces temperature to 50 ~ 100 DEG C, then enter in absorber (2), the circulating fluid counter current contacting sprayed with circulating pump (4), in gas, in sulfur dioxide, nitrogen oxide absorbed liquid, hydrogen peroxide oxidation is sulfuric acid and nitric acid, emptying through tail gas funnel after demister (3) foam removal that flue gas is arranged after absorber, sulfur dioxide can be reduced to 20mg/Nm
3below, nitrogen oxide can be reduced to 100mg/Nm
3below.Hydrogen peroxide water in dioxygen storage tank (5) is delivered to absorber by dioxygen water pump (6), fresh water (FW) by Cemented filling to absorber; Circulating absorption solution concentration is with the carrying out of absorption process, and acid concentration improves gradually, can regulable control between 0 ~ 55% as required, is expelled to dilute sulfuric acid storage tank (7) stand-by after reaching institute's controlled concentration through the branch road b of cyclic absorption pipeline.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Be labeled as in figure: 1, pre-cooler, 2, absorber, 3, demister, 4, circulating pump, 5, hydrogen peroxide storage tank, 6, dioxygen water pump, 7, dilute sulfuric acid storage tank.
Detailed description of the invention
In order to better illustrate and implement, below in conjunction with flow chart and instantiation detail, the utility model is described.
The three wastes mix combusting boiler 1, and combustion components is ammonia blowing-out gas, ammonia storage tank periodic off-gases and dropping a hint, gas-making cinder, the mixed combustions such as coal, boiler capacity 35 tons/h, flue gas 55000Nm after boiler combustion
3/ h, containing sulfur dioxide 530mg/Nm
3, nitrogen oxide 260mg/Nm
3deduster dedusting after stove, through economizer cooling, after electric cleaner dedusting flue-gas temperature 120 DEG C, first pre-cooler 1 is entered, 70 DEG C are cooled to through circulating line branch road a spraying cooling liquid, then flue gas enters in absorber 2, after the circulating absorption solution sprayed through circulating pump 3 absorbs sulfur dioxide wherein and nitrogen oxide, flue gas, through demister 4 foam removal, finally enters chimney emptying.Hydrogen peroxide is delivered in absorber 2 through dioxygen water pump 6 in hydrogen peroxide storage tank 5, and fresh water (FW) joins in absorber 2 by pipeline, supplements required moisture.After process, SO 2 from fume is less than 20mg/Nm
3, nitrogen oxide is less than 100mg/Nm
3, consume 27.5% hydrogen peroxide 68.5kg/h, reclaim and obtain 40% dilute sulfuric acid 132kg/h through cyclic absorption pipeline branch road b.
The beneficial effects of the utility model there is provided a kind of device of desulphurization denitration of fire coal boiler fume, and desulfurization off sulfide effect is good, and flow process is simple, and operating cost is low, has good environmental benefit.
Claims (5)
1. coal-burning boiler for flue gas desulfurization, denitration device, mainly comprise pre-cooler (1), absorber (2), demister (3), circulating pump (4), hydrogen peroxide storage tank (5), dioxygen water pump (6), dilute sulfuric acid storage tank (7) and the pipeline be connected thereof and annex, it is characterized in that: pre-cooler is connected with absorber gas feed; Circulating pump is imported and exported pipeline and is connected with spray equipment with absorber bottom respectively, and circulating-pump outlet install pipeline branch road a and branch road b, is connected with to dilute sulfuric acid storage tank pipeline with pre-cooler respectively; Hydrogen peroxide pump intake is connected with hydrogen peroxide reservoir outlet, and pump discharge is connected with inlet in the middle part of absorber; The supplementing water mouth of pipe is set in the middle part of absorber, supplements water pipe with technique and be connected; Absorber is connected with demister, and demister is further connected with emptying chimney.
2. coal-burning boiler for flue gas desulfurization, denitration device according to claim 1, is characterized in that: pre-cooler is cylinder-like structure, it is arranged spray nozzle and is connected with circulating-pump outlet bypass line a.
3. coal-burning boiler for flue gas desulfurization, denitration device according to claim 1, is characterized in that: the spray nozzle that pre-cooler is arranged also can directly be connected with fresh water (FW) pipeline, directly lowers the temperature to flue gas before process with fresh water (FW).
4. coal-burning boiler for flue gas desulfurization, denitration device according to claim 1, is characterized in that: absorber can be packed tower, void tower, hypergravity machine.
5. coal-burning boiler for flue gas desulfurization, denitration device according to claim 1, it is characterized in that: demister is one or more the combination in the tolerance dilute sulfuric acid corrosion silk screen of material, filler, absorber inside can be arranged on, absorber outside can also be arranged on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520400282.4U CN204768214U (en) | 2015-06-11 | 2015-06-11 | Coal fired boiler flue gas desulfurization denitrification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520400282.4U CN204768214U (en) | 2015-06-11 | 2015-06-11 | Coal fired boiler flue gas desulfurization denitrification facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204768214U true CN204768214U (en) | 2015-11-18 |
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ID=54508346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520400282.4U Expired - Fee Related CN204768214U (en) | 2015-06-11 | 2015-06-11 | Coal fired boiler flue gas desulfurization denitrification facility |
Country Status (1)
| Country | Link |
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| CN (1) | CN204768214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906937A (en) * | 2015-06-11 | 2015-09-16 | 威海恒邦化工有限公司 | Flue gas desulfurization and denitrification device and method of coal fired boiler |
-
2015
- 2015-06-11 CN CN201520400282.4U patent/CN204768214U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906937A (en) * | 2015-06-11 | 2015-09-16 | 威海恒邦化工有限公司 | Flue gas desulfurization and denitrification device and method of coal fired boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190611 |