CN202527072U - Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water - Google Patents
Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water Download PDFInfo
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- CN202527072U CN202527072U CN2012201712550U CN201220171255U CN202527072U CN 202527072 U CN202527072 U CN 202527072U CN 2012201712550 U CN2012201712550 U CN 2012201712550U CN 201220171255 U CN201220171255 U CN 201220171255U CN 202527072 U CN202527072 U CN 202527072U
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound 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NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000004202 carbamide Substances 0.000 title claims abstract description 48
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 20
- 239000000779 smoke Substances 0.000 title abstract description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound 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[NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title abstract description 7
- 238000010531 catalytic reduction reaction Methods 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000003197 catalytic Effects 0.000 claims abstract description 6
- 238000000197 pyrolysis Methods 0.000 claims description 50
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 33
- 239000003546 flue gas Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 241001088417 Ammodytes americanus Species 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 11
- 239000000243 solution Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 4
- 238000000889 atomisation Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
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Abstract
The utility model discloses a SCR smoke denitration device based on urea solutions or ammonia water. The device comprises a pyrolytic reaction air channel, a first draught fan, a second draught fan, a pyrolytic air heater, a solution storage tank, a pressurizing pump, an atomization spray gun and an ammonia injection grid and a SCR catalytic reactor arranged in a chimney flue at the tail portion of a boiler. According to the SCR smoke denitration device based on urea solutions or ammonia water, high temperature smoke is used to pyrolyze the urea solution or the ammonia aqueous solution for SCR denitration or gasify the urea solution or the ammonia aqueous solution into gaseous ammonia, the defect that the operation cost is high because external heat sources of natural gas, fuel oil or the like are used to perform pyrolyzation in the prior art are overcome, and simultaneously, compared with boiler secondary air, the pyrolytic air has a small smoke amount and small effects on operation of the boiler. The heat of the boiler smoke is fully used, the consumption of external heat is avoided, and the utilization ratio of the boiler heat is improved. The SCR smoke denitration device based on urea solutions or ammonia water has the advantages of being high in safety, simple in structure and easy to implement.
Description
Technical field
The utility model belongs to flue gas nitrogen oxide and reduces discharging (denitration) technical field, relates to a kind of SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor.
Background technology
Flue gas SCR (SCR) denitrating technique is the major technique of present denitrating flue gas.SCR technology is under catalyst action, and the selective reduction reaction takes place the NO in amino reductive and the flue gas, makes it to generate N
2And water, thereby pollution abatement.For guaranteeing to mix and reaction effect, require amino reductive to adopt ammonia-spraying grid evenly to spray in the flue, so the general liquefied ammonia that is easy to evaporate that adopts of its reducing agent with gaseous form.But liquefied ammonia belongs to hazardous chemical, and its transportation, storage all have strict restriction, all brings more inconvenience to initial stage construction and operational management, increases construction investment and operating cost, and brings potential safety hazard and environmental pollution risk for power plant and neighboring area.
In the prior art,, then need earlier, make to become gaseous ammonia molecules and spray into flue again the urea pyrolysis if use urea to make reducing agent.U.S. FUEL TECH has a cover urea pyrolysis Ammonia Process patented technology, and its main technical schemes is: in specially designed pyrolysis chamber, utilize natural gas or fuel oil that outdoor air heating back pyrolysis urea liquid is processed gaseous ammonia.This technological shortcoming is to adopt natural gas or fuel oil as thermal source, and operating cost is high.In the Chinese patent document; (the number of patent application: be directly to spray into the solid urea powder in the flue 201010582020.6) that " directly sprays urea method SCR flue-gas denitration process and device "; Utilize flue-gas temperature that the urea pyrolysis is become gaseous ammonia, the cigarette temperature is on the low side, and the pyrolysis effect is not really desirable; " a kind of process for producing ammonia from urea and system thereof that is used for denitration of boiler smoke " (number of patent application: 201010252649.4) be the improvement of U.S. FUEL TECH being overlapped urea pyrolysis Ammonia Process patented technology; Utilize the high-temperature flue gas heating to process pyrolysis wind natural wind; This scheme equally also adopts the pyrolysis chamber that is mentioned in the patent of U.S. FUEL TECH to carry out the urea liquid pyrolysis; Have pyrolysis chamber's complex structure equally, invest big shortcoming.
The utility model content
The utility model technical problem to be solved provides a kind of SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor, should be safe based on the SCR equipment for denitrifying flue gas of urea liquid or ammoniacal liquor, and simple in structure, easy to implement.
The technical solution of utility model is following:
A kind of SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor comprises pyrolytic reaction air channel, first blower fan, second blower fan, pyrolysis wind heater, solution basin, force (forcing) pump, atomizing lance and is arranged on ammonia-spraying grid and the SCR catalytic reactor in the boiler back end ductwork;
The setting of pyrolysis wind heater is in boiler furnace or the back-end ductwork;
The air outlet of first blower fan connects the inlet of pyrolysis wind heater, and the outlet of pyrolysis wind heater connects the air inlet in pyrolytic reaction air channel; The air inlet of first blower fan connects the secondary air duct of boiler or connects the stove outer air through air-valve through air-valve;
The inlet of second blower fan connects the stove outer air, and the outlet of second blower fan links to each other through the air inlet of air-valve with the pyrolytic reaction air channel;
Urea liquid in the solution basin outputs to the solution inlet of atomizing lance through force (forcing) pump and solution line; The nozzle of atomizing lance extend in the pyrolytic reaction air channel;
The gaseous ammonia outlet in pyrolytic reaction air channel connects ammonia-spraying grid.
On solution line, be provided with the metering distributor.
The pyrolytic reaction air channel is provided with one section spray gun stationary pipes, and the porch of spray gun stationary pipes is provided with the spray gun mounting flange that is used to install atomizing lance.
The technical conceive of the utility model is following:
The SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor of the utility model, (or outside the stove natural wind) hot-air that takes a morsel is used for the pyrolysis or the gasification of urea liquid or ammonia spirit after through the high-temperature flue gas heating the secondary wind behind boiler air preheater.For improving the temperature of this pyrolysis wind; Pyrolysis wind heater of (such as between high-temperature steam superheater and the Low Temperature Steam superheater or between Low Temperature Steam superheater and the economizer) insertion in boiler furnace or in the back-end ductwork; Pyrolysis wind-warm syndrome degree is increased to 350 ℃-700 ℃, inserts the ammonia-spraying grid (AIG) of SCR through the pyrolysis air channel.Directly spray into urea liquid or the ammonia spirit for preparing in the pyrolysis air channel before AIG; High temperature pyrolysis wind can be directly decomposes urea liquid or ammonia spirit or be gasificated into gaseous ammonia, satisfies the needs of SCR denitrification reducing agent, utilizes boiler smoke self heat energy that the urea liquid pyrolysis is become gaseous ammonia like this; Spray into the preceding flue gas of Benitration reactor by ammonia-spraying grid (AIG); Behind mixing and water conservancy diversion, evenly get into catalytic reactor,, make the NO in the flue gas through catalysis generation selective reduction reaction
xBe transformed into N
2And H
2O, thus realization removes the purpose of nitrogen oxide.
Pyrolysis wind is extracted (or outside stove, extracting the natural wind) out through the secondary wind of first blower fan behind air preheater of a VFC; Add electronic (pneumatic) damper before the blower fan; Simultaneously behind heater, add natural wind bypass and electronic (pneumatic) natural wind control valve, natural wind extracts the natural air outside stove through second blower fan.The above-mentioned synergy that is provided with can be stablized control pyrolysis air quantity and temperature, makes it to be complementary with required urea liquid that sprays into of boiler denitration or ammonia spirit amount.
Pyrolysis wind heater is a gas-to-gas heat exchanger, for saving the space, adopts the comb form of directly advancing directly to go out, and pyrolysis wind flows through in comb inside, and the boiler high temperature flue gas flows through from the comb external vertical, after the heat exchange, makes pyrolysis wind-warm syndrome degree rise to 350-700 ℃ mutually.
Ammonia spirit or urea are mixed with the solution of 30%-50% earlier through dissolving, be stored in the basin.Time spent is after the pump pressurization and regulating flow, directly in atomizing lance sprays into the pyrolytic reaction air channel.
Employing 316 of urea liquid spray gun or 316L material are processed; Add the compressed air assisted atomization, for high pressure stainless steel hose links to each other, spray gun can freely insert and extract out the air channel between spray gun and solution conveyor tube and the compressed air inlet pipe; Nozzle and gun barrel are for being threaded, and be replaceable.
Air channel after the heat exchange of pyrolysis wind adopts the composite of stainless steel or stainless steel and carbon steel to process (internal layer is a stainless steel), is incubated outside the air channel.
The utility model also is applicable to the occasion of making denitrification reducing agent with ammoniacal liquor.Ammoniacal liquor changes into gaseous ammonia through pyrolysis wind heat air in this device, same flue before ammonia-spraying grid sprays into Benitration reactor evenly gets into catalytic reactor behind mixing, water conservancy diversion, the NO in the flue gas is reduced into N2 and water, thereby realizes the denitrating flue gas purpose.
Beneficial effect:
The SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor of the utility model has following outstanding advantage:
(1) safe: after replacing liquefied ammonia to make the SCR denitrification reducing agent with urea liquid or ammonia spirit; Security is higher; The transportation and store more convenient, thereby also further eliminated a particularly big potential safety hazard and an environmental risk of city power plant of power plant, can simplify the denitrification apparatus procedure of submitting reports for approval.
(2) practice thrift cost; Energy efficient: urea liquid or ammonia spirit pyrolysis that the utility model utilizes high-temperature flue gas self heat energy of boiler itself that the SCR denitration is used become gaseous ammonia; Overcome in the existing technology and carried out pyrolysis and the high deficiency of operating cost with external heat sources such as natural gas or fuel oils; All very little because of the pyrolysis wind facies simultaneously for boiler secondary air and exhaust gas volumn, to the influence on system operation of boiler own also very little (can ignore).Simultaneously, this technology has also made full use of the heat of boiler smoke, has avoided the consumption of outside heat, has improved the utilization rate of boiler heat.
(3) the utility model utilize boiler secondary air high temperature wind again the heat exchanger in boiler heat, the heat exchange volume of the boiler heat-exchanger that reduces to know clearly is convenient to the design and the construction and installation of heat exchanger more, has reduced the effect on structure of boiler own, is convenient to implement.
(4) can make the urea pyrolysis not need other fuel to make thermal source, reduce the operating cost of denitrating system.
On the whole; The SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor of the utility model makes the SCR denitration technology; Be the great improvement to existing technology and device, easier on using, security is higher, the while also reduces investment outlay, operational and administrative expenses is low.
Description of drawings
Fig. 1 is based on the SCR equipment for denitrifying flue gas of urea liquid or ammoniacal liquor always to scheme;
Fig. 2 is a urea liquid spray gun sketch map.
Label declaration: 1: boiler furnace; 2: the boiler secondary air road; 3: air-valve;
4: the first blower fans; 5: pyrolysis wind heater; 6: the second blower fans; 7: the pyrolytic reaction air channel;
8: ammonia-spraying grid (AIG); 9: blender; 10: deflector; 11: fairing; The 12:SCR catalytic reactor; 13: air preheater; 14: flue; 15: the solution basin; 16: force (forcing) pump; 17: solution metering distributor; 18: atomizing lance; 20: spray gun is short tube fixedly;
21: the spray gun mounting flange; 22: atomizing lance; 23: solution inlet port; 24: the atomizing compressed air inlet; 25: nozzle.
The specific embodiment
Below will combine accompanying drawing and specific embodiment that the utility model is explained further details:
Embodiment 1: based on the SCR equipment for denitrifying flue gas of urea liquid:
As shown in Figure 1, the secondary air duct behind air preheater is drawn pyrolysis wind, and (pressurization scope 6000-10000Pa, the pressure that satisfies ammonia injection grid requires) is heated to 350～700 ℃ by boiler smoke in pyrolysis wind heater after the pressurization of first blower fan;
The 30%-50% urea liquid for preparing is stored in the basin, through urea solution pump pressurization and metering distributor control flow, is sprayed in the pyrolysis wind after above-mentioned being heated by atomizing lance;
The at high temperature rapid pyrolysis of urea after the atomizing becomes gaseous ammonia; Reach＜5% safety index; In ammonia-spraying grid (AIG) evenly sprays into Benitration reactor air inlet flue; Fully mix with flue gas through blender,, under catalyst action, the NO in the flue gas is reduced into N via evenly getting into Benitration reactor behind deflector and the rectifier
2, accomplish denitrification process.
First blower fan adopts frequency conversion fan, through VFC pyrolysis air quantity, to be complementary with the required urea liquid amount that sprays into of denitration.
Behind pyrolysis wind heater, add the natural wind bypass, natural wind is extracted the natural wind outside stove by second blower fan, and adds electronic (pneumatic) cold wind control valve (being air-valve), stablizes control pyrolysis wind-warm syndrome degree through regulating cold blast rate.
As shown in Figure 2, for making the urea liquid atomizing better, the urea liquid spray gun adds the compressed air assisted atomization, and spray gun can freely insert or extract out maintenance, and nozzle is replaceable.
Embodiment 2: based on the SCR equipment for denitrifying flue gas of ammoniacal liquor:
As shown in Figure 1, outside stove, extract pyrolysis wind, after the pyrolysis blower fan is forced into 6000-10000Pa, in pyrolysis wind heater, be heated to 350～700 ℃ by boiler smoke.
The ammonia spirit of 15%-20% is stored in the basin, through aqua ammonia pump pressurization and metering distributor control flow, is sprayed in the pyrolysis wind after above-mentioned being heated by spray gun;
Ammonia after the atomizing at high temperature is gasificated into gaseous ammonia rapidly; In ammonia-spraying grid evenly sprays into Benitration reactor air inlet flue; Fully mix with flue gas through blender,, under catalyst action, the NO in the flue gas is reduced into N via evenly getting into Benitration reactor behind deflector and the rectifier
2, accomplish denitrification process.
The above has only been described basic reality and has let slip journey, is not the restriction to implementation process.The those skilled in the art also can make other multi-form variations on the basis of above-mentioned explanation; This explanation can't also need not the variation of all embodiments is all listed, and the conspicuous version of being drawn thus all is in the protection domain of the utility model.
Claims (3)
1. SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor; It is characterized in that, comprise pyrolytic reaction air channel, first blower fan, second blower fan, pyrolysis wind heater, solution basin, force (forcing) pump, atomizing lance and be arranged on ammonia-spraying grid and the SCR catalytic reactor in the boiler back end ductwork;
The setting of pyrolysis wind heater is in boiler furnace or the back-end ductwork;
The air outlet of first blower fan connects the inlet of pyrolysis wind heater, and the outlet of pyrolysis wind heater connects the air inlet in pyrolytic reaction air channel; The air inlet of first blower fan connects the secondary air duct of boiler or connects the stove outer air through air-valve through air-valve;
The inlet of second blower fan connects the stove outer air, and the outlet of second blower fan links to each other through the air inlet of air-valve with the pyrolytic reaction air channel;
Urea liquid in the solution basin outputs to the solution inlet of atomizing lance through force (forcing) pump and solution line; The nozzle of atomizing lance extend in the pyrolytic reaction air channel;
The gaseous ammonia outlet in pyrolytic reaction air channel connects ammonia-spraying grid.
2. the SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor according to claim 1 is characterized in that, on solution line, is provided with the metering distributor.
3. the SCR equipment for denitrifying flue gas based on urea liquid or ammoniacal liquor according to claim 1 and 2 is characterized in that the pyrolytic reaction air channel is provided with one section spray gun stationary pipes, and the porch of spray gun stationary pipes is provided with the spray gun mounting flange that is used to install atomizing lance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201712550U CN202527072U (en) | 2012-04-20 | 2012-04-20 | Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201712550U CN202527072U (en) | 2012-04-20 | 2012-04-20 | Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190252A (en) * | 2014-08-20 | 2014-12-10 | 浙江大学 | Multistage pyrolysis coupled flue gas denitrification system with independent SCR (Selective Catalytic Reduction) ammonia-supplementing spray guns |
| CN106145159A (en) * | 2015-04-21 | 2016-11-23 | 中材装备集团有限公司 | A kind of cement plant SCR denitration ammonia prepares ammonia system and method |
| CN106582234A (en) * | 2016-10-20 | 2017-04-26 | 北京巴布科克·威尔科克斯有限公司 | Boiler wide-load urea direct injection pyrolysis flue gas denitrification system |
| CN106731553A (en) * | 2016-12-20 | 2017-05-31 | 天津华迈环保设备有限公司 | A kind of ammoniacal liquor feeding mechanism and method for flue gas SCR method denitration |
| CN112240560A (en) * | 2019-07-30 | 2021-01-19 | 青岛诺瑞尔节能环保科技有限公司 | Energy-saving SNCR (selective non-catalytic reduction) denitration device and denitration method |
-
2012
- 2012-04-20 CN CN2012201712550U patent/CN202527072U/en not_active Expired - Fee Related
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| CN104190252A (en) * | 2014-08-20 | 2014-12-10 | 浙江大学 | Multistage pyrolysis coupled flue gas denitrification system with independent SCR (Selective Catalytic Reduction) ammonia-supplementing spray guns |
| CN106145159A (en) * | 2015-04-21 | 2016-11-23 | 中材装备集团有限公司 | A kind of cement plant SCR denitration ammonia prepares ammonia system and method |
| CN106582234A (en) * | 2016-10-20 | 2017-04-26 | 北京巴布科克·威尔科克斯有限公司 | Boiler wide-load urea direct injection pyrolysis flue gas denitrification system |
| CN106731553A (en) * | 2016-12-20 | 2017-05-31 | 天津华迈环保设备有限公司 | A kind of ammoniacal liquor feeding mechanism and method for flue gas SCR method denitration |
| CN112240560A (en) * | 2019-07-30 | 2021-01-19 | 青岛诺瑞尔节能环保科技有限公司 | Energy-saving SNCR (selective non-catalytic reduction) denitration device and denitration method |
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