CN205570060U - Coke oven flue gas cleaning device - Google Patents
Coke oven flue gas cleaning device Download PDFInfo
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- CN205570060U CN205570060U CN201620321559.9U CN201620321559U CN205570060U CN 205570060 U CN205570060 U CN 205570060U CN 201620321559 U CN201620321559 U CN 201620321559U CN 205570060 U CN205570060 U CN 205570060U
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- scr reactor
- coke oven
- flue gas
- oven flue
- booster fan
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Abstract
The utility model relates to a coke oven flue gas cleaning device. Include the SCR reactor that meets with coke oven flue flue gas pipeline, the SCR reactor be low temperature SCR reactor, the pipeline of giving vent to anger of SCR reactor connects the booster fan, the pipeline of giving vent to anger of booster fan links to each other with the desulfurizing tower, the discharge end of desulfurizing tower sets up the export of solid -state result, the export of gaseous state result separately, solid -state result export below sets up the chemical fertilizer groove that gathers materials, the export of gaseous state result meets wet dust collector, wet dust collector's the pipeline of giving vent to anger connects the chimney, it sets up ammonia tank to be located SCR reactor side, ammonia tank including connecing the first second that sprays, connects on the pipeline is given vent to anger to the booster fan on SCR reactor admission line to spray, the front end first, that the second sprays sets up pressure sensors, pressure sensors's sensing signal reaches ammonia tank 's controller, what controller control was first, the second sprays opens and close. The utility model provides high coke oven flue flue gas denitration efficiency is to direct effective utilization of coke oven flue gas cleaning's result.
Description
Technical field
This utility model belongs to coking industry, relates to coke oven flue filed of flue gas purification, is specifically related to a kind of coke oven flue smoke eliminator.
Background technology
Coking industry, as the important branch of coal chemical industry, is also the pillar industry of numerous national economy industry simultaneously, and its importance is the most self-evident.But as the backward production facilities based on energy resource consumption, the atmosphere polluting problem of coking industry is increasingly by public attention.The discharge of newly-built coke oven chimney smoke has been made following strict regulations by the GB16171-2012 " coking chemistry emission of industrial pollutants standard " that Chinese Ministry of Environmental Protection promulgates: granular material discharged concentration is less than or equal to 30 mg/m3, machine Jiao's sulfur dioxide emissioning concentration is less than or equal to 50 mg/m3, machine Jiao's discharged nitrous oxides concentration is less than or equal to 500 mg/m3.Therefore, most important to coke oven flue gas pollutant high-efficient purification.
Coke oven flue gas cleaning at present focuses primarily on dedusting and desulfurization, but the improvement of nitrogen oxides is still within the starting stage, and existing cock-oven gas purifying device can not meet the emission limit requirement to coke oven flue gas pollutant purification of the new environmental protection standard.And owing to the temperature of coke oven flue flue gas is 250 DEG C ~ 320 DEG C, and Conventional selective catalysis reduction (SCR) denitrification apparatus can not be suitable for (conventional scr Applicable temperature scope is 300 DEG C ~ 420 DEG C)；Additionally, the tail gas after existing coke oven flue smoke eliminator purifies contains desulphurization reaction product, exhaust emissions is caused to be difficult to up to standard.Therefore, it is badly in need of a kind of coke oven flue flue gas multiple pollutant combined highly effective purifier.
Summary of the invention
This utility model purpose is to provide a kind of coke oven flue smoke eliminator, improves coke oven flue denitrating flue gas efficiency, carries out sufficiently cleaned up to the tail gas of coke oven flue gas, and the product purifying coke oven flue gas the most effectively utilizes.
In order to realize object above, the technical solution of the utility model is: a kind of coke oven flue smoke eliminator, including the SCR reactor connected with coke oven flue flue, described SCR reactor is low-temperature SCR reactor, the outlet pipe of SCR reactor connects booster fan, the outlet pipe of booster fan is connected with desulfurizing tower, the discharge end of desulfurizing tower sets up solid product outlet, product gas outlet separately, below solid product outlet, chemical fertilizer material collecting tank is set, product gas outlet connects wet scrubber, the outlet pipe cigarette receiving chimney of wet scrubber；
It is positioned at SCR reactor side and ammonia water tank is set, the second sprinkling that described ammonia water tank includes the be connected on SCR reactor admission line first sprinkling, is connected on booster fan outlet pipe, first, second front end sprayed arranges pressure inductor, the induced signal of pressure inductor reaches the controller of ammonia water tank, and controller controls the keying of first, second sprinkling.
Of the present utility model have the technical effect that low-temperature SCR reactor be use low form catalysis material be catalyst, the low temperature catalyst in this utility model is with TiO2、V2O5, MnO be main component, applicable working temperature is 250 DEG C ~ 320 DEG C, compares traditional SCR reactor (applicable working temperature 300 DEG C ~ 420 DEG C), substantially increases response speed, thus improves coke oven flue denitrating flue gas efficiency.Concrete, coke oven flue flue gas enters SCR reactor, first pressure inductor sprayed senses air pressure, air pressure signal is transferred to the controller of ammonia water tank, and controller controls the first sprinkling and sprays ammonia to SCR reactor admission line, and ammonia uniformly mixes with flue gas, mixed flue gas flows into SCR reactor, under the effect of low temperature catalyst, denitrfying agent ammonia and nitrogen oxides in effluent carry out catalytic reduction reaction at a lower temperature, and then remove the oxynitride in flue gas.Then, flue gas through denitration, under booster fan effect, enter desulfurizing tower, second pressure inductor sprayed senses air pressure, air pressure signal is transferred to the controller of ammonia water tank, controller controls the second sprinkling and sprays ammonia to booster fan outlet pipe, ammonia uniformly mixes with flue gas, mixed flue gas flows into desulfurizing tower, the sulfur dioxide in flue gas is made to carry out desulphurization reaction with ammonia, reactant generates desulfurization slag through desulfurizing tower, owing to desulfurization slag is byproduct of ammonium sulfate, this product is the raw material producing chemical fertilizer, so desulfurization slag is directly introduced into the chemical fertilizer material collecting tank of chemical fertilizer production line by solid product outlet, thus the product purifying coke oven flue gas is the most effectively utilized.And the flue gas product of desulfurizing tower is entered wet scrubber by product gas outlet and carries out ultrapurification dedusting, effectively remove the particulate matter in flue gas and desulphurization reaction product, flue gas is made to reach ultra-clean discharge standard, and arranged among air by chimney, thus to the tail gas of coke oven flue gas is carried out sufficiently cleaned up.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to of the present utility model specific configuration and work process thereof are expanded on further, preferred implementation of the present utility model is made following detailed description.
In conjunction with accompanying drawing, a kind of coke oven flue smoke eliminator, including the SCR reactor 10 connected with coke oven flue flue, described SCR reactor 10 is low-temperature SCR reactor, the outlet pipe of SCR reactor 10 connects booster fan 20, the outlet pipe of booster fan 20 is connected with desulfurizing tower 30, the discharge end of desulfurizing tower 30 sets up solid product outlet 31, product gas outlet 32 separately, below solid product outlet 31, chemical fertilizer material collecting tank 40 is set, product gas outlet 32 connects wet scrubber 50, the outlet pipe cigarette receiving chimney 60 of wet scrubber 50；
It is positioned at SCR reactor 10 side and ammonia water tank 70 is set, the second sprinkling 72 that described ammonia water tank 70 includes the be connected on SCR reactor 10 admission line first sprinkling 71, is connected on booster fan 20 outlet pipe, the front end of first, second sprinkling 71,72 arranges pressure inductor 73, the induced signal of pressure inductor 73 reaches the controller of ammonia water tank 70, and controller controls the keying of first, second sprinkling 71,72.
Low-temperature SCR reactor be use low form catalysis material be catalyst, the low temperature catalyst in this utility model is with TiO2、V2O5, MnO be main component, applicable working temperature is 250 DEG C ~ 320 DEG C, compares traditional SCR reactor (applicable working temperature 300 DEG C ~ 420 DEG C), substantially increases response speed, thus improves coke oven flue denitrating flue gas efficiency.
Concrete, coke oven flue flue gas enters SCR reactor 10, the pressure inductor 73 of the first sprinkling 71 senses air pressure, air pressure signal is transferred to the controller of ammonia water tank 70, and controller controls the first sprinkling 71 and sprays ammonia to SCR reactor 10 admission line, and ammonia uniformly mixes with flue gas, mixed flue gas flows into SCR reactor 10, under the effect of low temperature catalyst, denitrfying agent ammonia and nitrogen oxides in effluent carry out catalytic reduction reaction at a lower temperature, and then remove the oxynitride in flue gas.
Its reaction equation is as follows:
4 NH3 + 4 NO + O2 → 4 N2 + 6
H2O
4 NH3 + 6 NO → 5 N2 + 6
H2O
8 NH3 + 6 NO2 → 7 N2 + 12
H2O
4 NH3 + 2 NO2 + O2
→ 3 N2 + 6 H2O
Then, flue gas through denitration, under booster fan 20 acts on, enter desulfurizing tower 30, the pressure inductor 73 of the second sprinkling 72 senses air pressure, air pressure signal is transferred to the controller of ammonia water tank 70, controller controls the second sprinkling 72 and sprays ammonia to booster fan 20 outlet pipe, ammonia uniformly mixes with flue gas, mixed flue gas flows into desulfurizing tower 30, the sulfur dioxide in flue gas is made to carry out desulphurization reaction with ammonia, reactant generates desulfurization slag through desulfurizing tower 30, owing to desulfurization slag is byproduct of ammonium sulfate, this product is the raw material producing chemical fertilizer, so desulfurization slag is directly introduced into the chemical fertilizer material collecting tank 40 of chemical fertilizer production line by solid product outlet 31, thus the product purifying coke oven flue gas is the most effectively utilized.
Its reaction equation is as follows:
2 NH3 + SO2 + H2O→ (NH3)2SO3
(NH3)2SO3
+1/2O2→(NH3)2SO4
And the flue gas product of desulfurizing tower 30 is entered wet scrubber 50 by product gas outlet 32 and carries out ultrapurification dedusting, effectively remove the particulate matter in flue gas and desulphurization reaction product, flue gas is made to reach ultra-clean discharge standard, and by chimney 60 row among air, thus to the tail gas of coke oven flue gas is carried out sufficiently cleaned up.
Further, being provided with multiple catalyst bed 11 in SCR reactor 10 from top to bottom, the uniform land of low temperature catalyst are in catalyst bed 11.
The multiple catalyst beds 11 arranged strengthen the catalytic action to flue gas, improve coke oven flue denitrating flue gas efficiency further.
Further, the top being positioned at discharge end in desulfurizing tower 30 arranges condensing unit 80.There is liquid at high operating temperatures due to ammonium sulfate, the discharge product of desulfurizing tower 30 is condensed by the condensing unit 80 of setting, it is ensured that the molding of desulfurizing tower 30 discharging, convenient blanking.
Claims (3)
1. a coke oven flue smoke eliminator, including the SCR reactor (10) connected with coke oven flue flue, it is characterized in that: described SCR reactor (10) is low-temperature SCR reactor, the outlet pipe of SCR reactor (10) connects booster fan (20), the outlet pipe of booster fan (20) is connected with desulfurizing tower (30), the discharge end of desulfurizing tower (30) sets up solid product outlet (31) separately, product gas outlet (32), solid product outlet (31) lower section arranges chemical fertilizer material collecting tank (40), product gas outlet (32) connects wet scrubber (50), outlet pipe cigarette receiving chimney (60) of wet scrubber (50)；
It is positioned at SCR reactor (10) side and ammonia water tank (70) is set, the second sprinkling (72) that described ammonia water tank (70) includes the be connected on SCR reactor (10) admission line first sprinkling (71), is connected on booster fan (20) outlet pipe, first, second front end spraying (71,72) arranges pressure inductor (73), the induced signal of pressure inductor (73) reaches the controller of ammonia water tank (70), and controller controls the keying of first, second sprinkling (71,72).
Coke oven flue smoke eliminator the most according to claim 1, it is characterised in that: being provided with multiple catalyst bed (11) in SCR reactor (10) from top to bottom, the uniform land of low temperature catalyst are in catalyst bed (11).
Coke oven flue smoke eliminator the most according to claim 1, it is characterised in that: the top being positioned at discharge end in desulfurizing tower (30) arranges condensing unit (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321559.9U CN205570060U (en) | 2016-04-13 | 2016-04-13 | Coke oven flue gas cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321559.9U CN205570060U (en) | 2016-04-13 | 2016-04-13 | Coke oven flue gas cleaning device |
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| CN205570060U true CN205570060U (en) | 2016-09-14 |
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| CN201620321559.9U Active CN205570060U (en) | 2016-04-13 | 2016-04-13 | Coke oven flue gas cleaning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469619A (en) * | 2017-09-15 | 2017-12-15 | 安徽天隆饲料有限公司 | A kind of concentrated feed emission-control equipment |
-
2016
- 2016-04-13 CN CN201620321559.9U patent/CN205570060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469619A (en) * | 2017-09-15 | 2017-12-15 | 安徽天隆饲料有限公司 | A kind of concentrated feed emission-control equipment |
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| GR01 | Patent grant |