CN205235732U - Flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia - Google Patents
Flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia Download PDFInfo
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- CN205235732U CN205235732U CN201521113561.9U CN201521113561U CN205235732U CN 205235732 U CN205235732 U CN 205235732U CN 201521113561 U CN201521113561 U CN 201521113561U CN 205235732 U CN205235732 U CN 205235732U
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- hydrogen peroxide
- ammoniacal liquor
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Abstract
The utility model belongs to the technical field of gas cleaning, concretely relates to flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia. This system includes that hydrogen peroxide solution storage unit, hydrogen peroxide solution injection unit, water storage unit, aqueous ammonia storage unit, the aqueous ammonia dilute unit, aqueous ammonia injection unit and flue, wherein, hydrogen peroxide solution storage unit, hydrogen peroxide solution injection unit and flue connect gradually, water storage unit, the aqueous ammonia dilute unit, aqueous ammonia injection unit and flue and connect gradually, aqueous ammonia storage unit, the aqueous ammonia dilute unit, aqueous ammonia injection unit and flue and connect gradually. This system with the hydrogen peroxide solution with dilute after the aqueous ammonia spray the flue gas, utilize to act on NOx's non - catalytic reduction with NH3 NO's oxidation at temperature range H2O2, convert NOx into N2 and H2O to reach desorption NOx's mesh.
Description
Technical field
The utility model belongs to flue gases purification field, is specifically related to a kind of hydrogen peroxide and ammoniacal liquor and combines throwingThe flue gas denitrification system adding.
Background technology
Nitrogen oxide (NOx) is common atmosphere pollution, and China NOx discharge presents becoming of rising year by yearGesture, wherein the NOx of coal-burning boiler discharge occupies major part, therefore controls the row of fire coal boiler fume NOxPutting is of paramount importance link.
Conventional coal-fired boiler NOx discharge control method comprises nitrogen oxide burning process control and combustion at presentDenitrating flue gas after burning, wherein the denitrating flue gas after burning common are SNCR and two kinds of processes of SCR.The flue-gas temperature interval that SNCR adapts to is at 850～1100 DEG C, the flue-gas temperature interval that SCR adapts to 300～420 DEG C, flue gas can not adopt SNCR or SCR method to take off in 420 DEG C～800 DEG C temperature rangesNitre.
Utility model content
In order to overcome the deficiencies in the prior art and shortcoming, the purpose of this utility model is to provide a kind of hydrogen peroxideCombine with ammoniacal liquor the flue gas denitrification system adding, this system is located at SNCR and SCR process system can not sent outIn the flue-gas temperature interval of raw reaction, can allow flue gas carry out denitration in the temperature range of 680 DEG C～800 DEG C,Technological process is simple, systematic economy environmental protection.
The purpose of this utility model is achieved through the following technical solutions:
Hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding, and comprise hydrogen peroxide storage element, dioxygenAqueous jet, water storage element, ammoniacal liquor storage element, ammoniacal liquor dilution unit, ammonia water spray unit and cigaretteRoad;
Wherein, described hydrogen peroxide storage element, hydrogen peroxide injection unit are connected successively with flue; Water storesUnit, ammoniacal liquor dilution unit, ammonia water spray unit are connected successively with flue; Ammoniacal liquor storage element, ammoniacal liquor are rareRelease unit, ammonia water spray unit is connected successively with flue;
Preferably, described hydrogen peroxide storage element be provided with successively connect unload dioxygen water pump, hydrogen peroxide storage tankWith the first force (forcing) pump; The first force (forcing) pump is connected with hydrogen peroxide injection unit;
Preferably, described hydrogen peroxide injection unit is provided with the first air compressor and the first spray that connect successivelyEmitter, the first injector is connected with hydrogen peroxide storage element; The first injector is circumferentially even cloth along flue cross sectionPut, the shower nozzle of the first injector is positioned at flue inside;
Further preferred, described hydrogen peroxide injection unit be also provided with the first control valve, first flow meter andThe second control valve; Hydrogen peroxide storage element is connected with the first injector with first flow meter by the first control valve;The first air compressor is connected with the first injector by the second control valve;
Preferably, described water storage element is provided with the water storage tank and the second force (forcing) pump that connect successively; Second addsPress pump is connected with ammoniacal liquor dilution unit;
Preferably, described ammoniacal liquor storage element be provided with successively connect unload ammonia pump, tank used for storing ammonia and the 3rd addsPress pump; The 3rd force (forcing) pump is connected with ammoniacal liquor dilution unit;
Preferably, described ammoniacal liquor dilution unit is provided with blender; Water storage element, ammoniacal liquor storage element andAmmonia water spray unit is connected with blender respectively;
Further preferred, described ammoniacal liquor dilution unit is also provided with the 3rd control valve, the 4th control valve, theTwo flowmeters and the 3rd flowmeter; Water storage element passes through the 3rd control valve and the second flowmeter and blender and connectsConnect; Ammoniacal liquor storage element is connected with blender with the 3rd flowmeter by the 4th control valve;
Preferably, described ammonia water spray unit is provided with the second air compressor and the second injection that connect successivelyDevice; The second injector is connected with ammoniacal liquor air mix facilities; The second injector is circumferentially evenly arranged along flue cross section,The shower nozzle of the second injector is positioned at flue inside;
Further preferred, described ammonia water spray device is also provided with the 5th control valve, the 6th control valve and theFour flowmeters; Ammoniacal liquor air mix facilities is connected with the second injector with the 6th flowmeter by the 5th control valve; TheTwo air compressors are connected with the second injector by the 6th control valve;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised automaton, automaticallyControl device respectively with water storage element, ammoniacal liquor storage element, ammoniacal liquor dilution unit, ammonia water spray unit,Hydrogen peroxide storage element, hydrogen peroxide injection unit connect; Described automaton is provided with host computer, PLCOr DCS and communication apparatus;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised that flue gas NOx detects dress onlinePut, flue gas NOx on-line measuring device is connected with the afterbody of flue;
Preferably, the shower nozzle of the first injector of described hydrogen peroxide injection unit be positioned at flue-gas temperature and be 680～In the flue of 800 DEG C;
Preferably, the shower nozzle of the second injector of described ammonia water spray unit be positioned at flue-gas temperature and be 680～In the flue of 800 DEG C;
Principle of the present utility model: hydrogen peroxide enters hydrogen peroxide injection apparatus through hydrogen peroxide storage element, through dividingAfter mixing with compressed air after joining, spurt in flue through injector, the temperature of spray site flue gas 680～800℃；
Water storage element is connected with ammoniacal liquor air mix facilities by pipeline respectively with ammoniacal liquor storage element, ammoniacal liquor dilutionDevice is connected with ammonia water spray device; Dilution water enters ammoniacal liquor air mix facilities, ammoniacal liquor warp through water storage elementCross ammoniacal liquor storage element and enter ammoniacal liquor air mix facilities, will after ammoniacal liquor dilution, enter ammonia water spray device, through distributingAfter mixing with compressed air afterwards, spurt in flue through injector, spray at hydrogen peroxide the position of ammonia water spray pointThe rear, position of point;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised automaton and flue gasNOx on-line measuring device, automaton respectively with hydrogen peroxide storage element, ammoniacal liquor storage element, waterStorage element, ammoniacal liquor dilution unit, ammonia water spray unit, hydrogen peroxide injection unit connect; Flue gas NOx existsLine detector is connected with the afterbody of flue; By flue gas NOx on-line measuring device, flue tail flue gas is arrangedThe NOx of putting detects, and automaton utilization detects data and by PLC or DCS, hydrogen peroxide stored upDeposit receipt unit, ammoniacal liquor storage element, water storage element, ammoniacal liquor dilution unit, ammonia water spray unit, hydrogen peroxideInjection unit is controlled, and controls H2O2And NH3Addition, to reach good denitration rate and lowerHydrogen peroxide and ammonia water consumption.
The utility model has following advantage and effect with respect to prior art:
(1) this system at SNCR and SCR process system in the flue-gas temperature interval that can not react,Can allow flue gas carry out denitration in the temperature range of 680 DEG C～800 DEG C;
(2) this system can be controlled the dosage of hydrogen peroxide and ammoniacal liquor automatically, reaches good denitration efficiency;
(3) this system hydrogen peroxide and ammoniacal liquor used is the chemicals being cheaply easy to get, and operating cost is lower.
(4) the utility model, by the ammonia water spray after hydrogen peroxide and dilution in flue gas, utilizes in temperature rangeH2O2Oxidation to NO and NH3To the non-catalytic reduction effect of NOx, NOx is converted to N2And H2O, thus reach the object of NO_x removal. Adopt this system can be in lower temperature interval 680～800 DEG CReach higher denitration efficiency 25～40%, and technological process is simple, systematic economy environmental protection.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but the utility modelEmbodiment be not limited to this.
As shown in Figure 1, a kind of hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding, and comprise hydrogen peroxide storageDeposit receipt unit 1, hydrogen peroxide injection unit 2, water storage element 3, ammoniacal liquor storage element 4, ammoniacal liquor dilution unit 5,Ammonia water spray unit 6 and flue 7;
Wherein, described hydrogen peroxide storage element 1, hydrogen peroxide injection unit 2 and flue 7 are connected successively; WaterStorage element 3, ammoniacal liquor dilution unit 5, ammonia water spray unit 6 and flue 7 are connected successively; The ammoniacal liquor bill of storeUnit 4, ammoniacal liquor dilution unit 5, ammonia water spray unit 6 are connected successively with flue 7;
Preferably, described hydrogen peroxide storage element 1 be provided with successively connect unload dioxygen water pump 1-1, hydrogen peroxideStorage tank 1-2 and the first force (forcing) pump 1-3; The first force (forcing) pump 1-3 is connected with hydrogen peroxide injection unit 2;
Preferably, described hydrogen peroxide injection unit 2 is provided with successively the first air compressor 2-4 of connecting and theOne injector 2-3, the first injector 2-3 is connected with the first force (forcing) pump 1-3 of hydrogen peroxide storage element 1; TheOne injector 2-3 is circumferentially evenly arranged along flue 7 cross sections, and the shower nozzle of the first injector 2-3 is positioned at flue 7Portion;
Further preferred, described hydrogen peroxide injection unit 2 is provided with the first control valve 2-1, first flow meter2-2 and the second control valve 2-5; The first force (forcing) pump 1-3 of hydrogen peroxide storage element 1 is by the first control valve 2-1Be connected with the first injector 2-3 with first flow meter 2-2; The first air compressor 2-4 is by the second control valve2-4 is connected with the first injector 2-3;
Preferably, described water storage element 3 is provided with the water storage tank 3-1 and the second force (forcing) pump 3-2 that connect successively;The second force (forcing) pump 3-2 is connected with ammoniacal liquor dilution unit 5;
Preferably, described ammoniacal liquor storage element 4 be provided with successively connect unload ammonia pump 4-1, tank used for storing ammonia 4-2With the 3rd force (forcing) pump 4-3; The 3rd force (forcing) pump 4-3 is connected with ammoniacal liquor dilution unit 5;
Preferably, described ammoniacal liquor dilution unit 5 is provided with blender 5-3; The second pressurization of water storage element 3The 3rd force (forcing) pump 4-3 of pump 3-2 and ammoniacal liquor storage element 4 is connected with blender 5-3 respectively; Blender 5-3Be connected with ammonia water spray unit 6;
Further preferred, described ammoniacal liquor dilution unit be provided with the 3rd control valve 5-1, the 4th control valve 5-4,The second flowmeter 5-2 and the 3rd flowmeter 5-5; The second force (forcing) pump 3-2 of water storage element 3 adjusts by the 3rdJoint valve 5-1 is connected with blender 5-3 with the second flowmeter 5-2; The 3rd force (forcing) pump 4-3 of ammoniacal liquor storage element 4Be connected with blender 5-3 with the 3rd flowmeter 5-5 by the 4th control valve 5-4;
Preferably, described ammonia water spray unit 6 is provided with the second air compressor 6-4 and second connecting successivelyInjector 6-3; The second injector 6-3 is connected with the blender 5-3 of ammoniacal liquor air mix facilities 5; The second injector6-3 is circumferentially evenly arranged along flue 7 cross sections, and the shower nozzle of the second injector 6-3 is positioned at flue 7 inside;
Further preferred, described ammonia water spray device 6 is provided with the 5th control valve 6-1, the 6th control valve 6-5With the 4th flowmeter 6-2; The blender 5-3 of ammoniacal liquor air mix facilities 5 is by the 5th control valve 6-1 and the 4th streamAmount meter 6-2 is connected with the second injector 6-3; The second air compressor 6-4 is by the 6th control valve 6-5 and theTwo injector 6-3 connect;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised automaton, automaticallyControl device respectively with water storage element 3, ammoniacal liquor storage element 4, ammoniacal liquor dilution unit 5, ammonia water spray listUnit 6, hydrogen peroxide storage element 1, hydrogen peroxide injection unit 2 connect; Described automaton is provided withPosition machine, PLC or DCS and communication apparatus;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised that flue gas NOx detects dress onlinePut, flue gas NOx on-line measuring device is connected with the afterbody of flue;
Preferably, the shower nozzle of the first injector 2-3 of described hydrogen peroxide injection unit 2 is positioned at flue-gas temperature and isIn the flue 7 of 680～800 DEG C;
Preferably, the shower nozzle of the second injector 6-3 of described ammonia water spray unit 6 is positioned at flue-gas temperature and isIn the flue 7 of 680～800 DEG C;
For better realizing effect of the present utility model, hydrogen peroxide storage element 1 is arranged on civil engineering structure factory canopyIn. The volume guarantee system of hydrogen peroxide storage tank 1-2 can be moved 7 days continuously, and hydrogen peroxide storage tank 1-2 is provided withLiquid level gauge, breather valve. Hydrogen peroxide is transported to scene by tank car, and utilization is unloaded dioxygen water pump 1-1 hydrogen peroxide is squeezed intoIn hydrogen peroxide storage tank 1-2, force (forcing) pump 1-3 squeezes into hydrogen peroxide by the hydrogen peroxide in hydrogen peroxide storage tank 1-2 and sprays singleIn unit 2. In hydrogen peroxide injection unit 2, hydrogen peroxide and compressed air are assigned to along flue cross section circumferentialIn the first injector 2-3 arranging, in the first injector 2-3 after hydrogen peroxide and compressed air mixed aerosol,Spray into boiler by shower nozzle.
Ammoniacal liquor storage element 4 is arranged in civil engineering structure factory canopy, is provided with fire wall. The volume of tank used for storing ammonia 4-2Guarantee system can be moved 7 days continuously, and tank used for storing ammonia 4-2 is provided with liquid level gauge, breather valve and volatilization ammonia and inhalesReceiving apparatus. Concentrated ammonia liquor is transported to scene by ammoniacal liquor tank car, and utilization is unloaded ammonia pump 4-1 ammoniacal liquor is squeezed into tank used for storing ammoniaIn 4-2, force (forcing) pump 4-3 squeezes into the ammoniacal liquor in tank used for storing ammonia 4-2 in ammoniacal liquor dilution unit 5.
In water storage element 3, adopt water storage tank 3-1 to store demineralized water, demineralized water is squeezed into ammoniacal liquor dilution unit 5In, concentrated ammonia liquor is diluted, to realize the suitable concn that is ejected into ammonia in flue gas water, reach de-preferablyNitre efficiency. Water storage tank 3-1 is provided with liquid level gauge and liquid-level switch ensures to supplement in time demineralized water.
Ammoniacal liquor dilution unit 5 is diluted to the ammoniacal liquor of 20% concentration after technological requirement concentration, the ammoniacal liquor after dilutionEnter again ammonia water spray unit 6. In ammonia water spray unit, ammoniacal liquor and compressed air after dilution are assigned toAlong in the second injector 6-3 of flue cross section circumferential arrangement, in the second injector 6-3, middle ammoniacal liquor and compression are emptyAfter gas mixed aerosol, spray into boiler by shower nozzle, the spray site of ammoniacal liquor is after the spray site of hydrogen peroxide.
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised automaton, describedAutomaton is provided with host computer, PLC and supporting communication apparatus, can monitor, controls and regulate eachThe operation of equipment, controls H automatically2O2、NH3Proportioning with NOx, realizes NO_x Reduction by Effective;
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised that the online NOx of flue gas detects dressPut, the NOx of fume emission is detected in real time.
Above-described embodiment is preferably embodiment of the utility model, but embodiment of the present utility model is notBe restricted to the described embodiments, other any do not deviate from Spirit Essence of the present utility model and lower of principle is doneChange, modification, substitute, combination, simplify, all should be equivalent substitute mode, be included in this practicalityWithin novel protection domain.
Claims (10)
1. hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding, and it is characterized in that: comprise hydrogen peroxideStorage element, hydrogen peroxide injection unit, water storage element, ammoniacal liquor storage element, ammoniacal liquor dilution unit, ammoniaAqueous jet and flue;
Wherein, described hydrogen peroxide storage element, hydrogen peroxide injection unit are connected successively with flue; Water storesUnit, ammoniacal liquor dilution unit, ammonia water spray unit are connected successively with flue; Ammoniacal liquor storage element, ammoniacal liquor are rareRelease unit, ammonia water spray unit is connected successively with flue.
2. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described hydrogen peroxide storage element be provided with successively connect unload dioxygen water pump, hydrogen peroxide storage tank and first addsPress pump; The first force (forcing) pump is connected with hydrogen peroxide injection unit.
3. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described hydrogen peroxide injection unit is provided with the first air compressor and the first injector that connect successively, theOne injector is connected with hydrogen peroxide storage element; The first injector is circumferentially evenly arranged along flue cross section, and firstThe shower nozzle of injector is positioned at flue inside.
4. hydrogen peroxide according to claim 3 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
It is 680～800 DEG C that the shower nozzle of the first injector of described hydrogen peroxide injection unit is positioned at flue-gas temperatureIn flue.
5. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described water storage element is provided with the water storage tank and the second force (forcing) pump that connect successively; The second force (forcing) pump and ammoniaWater dilution unit connects.
6. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described ammoniacal liquor storage element be provided with successively connect unload ammonia pump, tank used for storing ammonia and the 3rd force (forcing) pump; TheThree force (forcing) pumps are connected with ammoniacal liquor dilution unit.
7. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described ammoniacal liquor dilution unit is provided with blender; Water storage element, ammoniacal liquor storage element and ammonia water sprayUnit is connected with blender respectively.
8. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
Described ammonia water spray unit is provided with the second air compressor and the second injector that connect successively; SecondInjector is connected with ammoniacal liquor air mix facilities; The second injector is circumferentially evenly arranged along flue cross section, and second spraysThe shower nozzle of device is positioned at flue inside.
9. hydrogen peroxide according to claim 8 and ammoniacal liquor are combined the flue gas denitrification system adding, its featureBe:
It is the cigarette of 680～800 DEG C that the shower nozzle of the second injector of described ammonia water spray unit is positioned at flue-gas temperatureIn road.
10. hydrogen peroxide according to claim 1 and ammoniacal liquor are combined the flue gas denitrification system adding, its spyLevy and be:
Described hydrogen peroxide and ammoniacal liquor are combined the flue gas denitrification system adding and are also comprised automaton, automaticallyControl device respectively with water storage element, ammoniacal liquor storage element, ammoniacal liquor dilution unit, ammonia water spray unit,Hydrogen peroxide storage element, hydrogen peroxide injection unit connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113561.9U CN205235732U (en) | 2015-12-25 | 2015-12-25 | Flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113561.9U CN205235732U (en) | 2015-12-25 | 2015-12-25 | Flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia |
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| Publication Number | Publication Date |
|---|---|
| CN205235732U true CN205235732U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521113561.9U Expired - Fee Related CN205235732U (en) | 2015-12-25 | 2015-12-25 | Flue gas denitration system that adds is jointly thrown to hydrogen peroxide solution and aqueous ammonia |
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| CN (1) | CN205235732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485988A (en) * | 2017-10-19 | 2017-12-19 | 福建龙净环保股份有限公司 | A kind of SCR denitration method |
| CN110385024A (en) * | 2019-08-28 | 2019-10-29 | 华能国际电力股份有限公司 | Multi-effect COA system suitable for high temperature area |
-
2015
- 2015-12-25 CN CN201521113561.9U patent/CN205235732U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485988A (en) * | 2017-10-19 | 2017-12-19 | 福建龙净环保股份有限公司 | A kind of SCR denitration method |
| CN110385024A (en) * | 2019-08-28 | 2019-10-29 | 华能国际电力股份有限公司 | Multi-effect COA system suitable for high temperature area |
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| 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: 20160518 Termination date: 20201225 |