CN202751952U - Mixed catalytic denitration device - Google Patents
Mixed catalytic denitration device Download PDFInfo
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- CN202751952U CN202751952U CN 201220364478 CN201220364478U CN202751952U CN 202751952 U CN202751952 U CN 202751952U CN 201220364478 CN201220364478 CN 201220364478 CN 201220364478 U CN201220364478 U CN 201220364478U CN 202751952 U CN202751952 U CN 202751952U
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- injection device
- reducing agent
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Abstract
The utility model relates to a mixed catalytic denitration device which comprises an ammonia water storage tank, a reducing agent delivery pump, an air compressor, a mixer, an evaporation plant, a dilution water pump, a non-catalytic injection device, a boiler, a catalytic injection device and a catalytic reactor. The ammonia water storage tank is coupled with the reducing agent delivery pump, the reducing agent delivery pump, the air compressor and the dilution water pump are coupled with the mixer, the mixer is coupled with the evaporation plant, the evaporation plant is respectively coupled with the non-catalytic injection device and the catalytic injection device, the non-catalytic injection device injects ammonia gas into a body of the boiler, the catalytic injection device is arranged on the upper portion of the boiler and injects ammonia gas into the boiler, and the catalytic reactor is coupled with the upper portion of the boiler. The mixed catalytic denitration device can carry out denitration effectively.
Description
Technical field
The utility model relates to the treatment technology of nitrogen oxides in effluent, or rather, relates to a kind of denitrification apparatus of mixed catalytic.
Background technology
In September, 2011, national environmental protection section has issued " fossil-fuel power plant atmospheric pollutant emission standard ", plays enforcement on January 1st, 2012.Compare with old standard in 2003, new standard has significantly tightened up the emission limit of nitrogen oxide, sulfur dioxide and flue dust, formulate the special emission limit of stricter atmosphere pollution for emphasis and environmentally sensitive area, and set up the emission limit of mercury and gas fired-boiler.
The present just critical period of Chinese denitration desulphurization plant industry development; also being China marches toward transitional period of " 12 " from Eleventh Five-Year Plan; under global financial crisis storm overall situation and domestic severe economic situation; a series of new policies will be put into effect successively, and a collection of national large project will put into operation successively.And in the long term, the Industrial Stoves such as steel plant, chemical plant, incinerator also produce a large amount of nitrogen oxide when producing, and the denitrating flue gas market in these fields is wide equally.Therefore, running business into strong one as early as possible, doing has greatly the denitrating flue gas of state-owned autonomous property right industry significant, and great market is also arranged simultaneously.
In 12 planning, the atmosphere pollution aspect of attaching most importance to nitrogen oxide:
A. electric pollution reduces discharging:
The whole auxiliary construction denitration of newly-built coal-fired unit facility, denitration efficiency reaches more than 80%;
Do not adopt low nitrogen burning technology or low nitrogen burning inefficiency to renovate;
Single-machine capacity is more than 30 kilowatts, and the active service units denitration more than 20 kilowatts of east and other provincial capital's single-machine capacity is transformed, and overall efficiency is more than 70%.Strengthen the having put into operation supervision of denitration facility.
B. accelerate non-electric key industry denitration process:
Newly-built sintering machine is answered supporting installation desulphurization denitration facility;
C. suiting measures to local conditions to carry out fire coal boiler fume administers:
Newly-built big-and-middle-sized coal-burning boiler should be installed the desulphurization denitration facility;
The existing coal-burning boiler of east more than 35 tons should be installed the low nitrogen burning facility;
The utility model content
The technical problem that solves
1, along with the increasing of environmental protection dynamics, more and more higher to the requirement of denitration efficiency, denitration efficiency requires to more than 80% even higher;
2, whole thermoelectricity, iron and steel, the chemical industry the requirement of denitration expanded, operating mode is more complicated;
3, present existing denitration mode improves the input that denitration efficiency needs constantly to add catalyst mainly in the SCR mode as main;
4, the bad control of the denitration efficiency of denitration device can not adapt to constantly strict discharging policy;
The technical program solves emphatically above four problems, the utility model has the advantages that on the principle of traditional denitration technology the denitration principle in conjunction with on-catalytic and catalysis, the optimization device structure, can be widely applicable for the pollutant reaction in the various flue gases, than the more environmental protection of other equipment for denitrifying flue gas, practicality, higher denitration efficiency is arranged, comprehensive solution above-mentioned four problems.
Technical scheme
The problems referred to above that exist for solving prior art, the utility model provides a kind of denitrification apparatus of mixed catalytic, comprise tank used for storing ammonia, the reducing agent delivery pump, air compressor machine, blender, vaporising device, the dilution water pump, the on-catalytic injection apparatus, boiler, catalyst injection device, and catalytic reactor, wherein, described tank used for storing ammonia couples the reducing agent delivery pump, described reducing agent delivery pump, air compressor machine, and the dilution water pump all is coupled to blender, described blender couples described vaporising device, described vaporising device couples respectively on-catalytic injection apparatus and catalyst injection device, described on-catalytic injection apparatus sprays ammonia in described boiler body, described catalyst injection device is sprayed ammonia in upper boiler in boiler, described catalytic reactor couples described upper boiler.
The denitrification apparatus of described mixed catalytic also can comprise air preheater, and described catalytic reactor is coupled with exhanst gas outlet by described air preheater.
Technique effect
According to cooling and dedusting fluorine remover of the present utility model, can
1. adapt to the variation (comprising the variation of exhaust gas volumn and flue-gas temperature) of flue gas;
2. good contact area and time of contact are arranged, and denitration efficiency is high;
3. can carry out economic adjustment according to the gateway amount of nitrogen oxides;
4. under the same denitration efficiency, can save the catalyst number of plies, save operating cost.
Description of drawings
From the following description to preferred embodiments and drawings that purport of the present utility model and usefulness thereof are described, above and other purpose of the present utility model, characteristics and advantage will be apparent, in the accompanying drawings:
Fig. 1 is the denitrification apparatus schematic diagram according to mixed catalytic of the present utility model;
Among Fig. 1: 1, tank used for storing ammonia; 2, reducing agent delivery pump; 3, air compressor machine; 4, blender; 5, vaporising device; 6, dilution water pump; 7, on-catalytic injection apparatus; 8, boiler; 9, catalyst injection device; 10, catalytic reactor; 11, air preheater.
The specific embodiment
Below, in connection with accompanying drawing the utility model specific embodiment mode is described in detail.
As shown in Figure 1, denitrification apparatus according to mixed catalytic of the present utility model, comprise tank used for storing ammonia, the reducing agent delivery pump, air compressor machine, blender, vaporising device, the dilution water pump, the on-catalytic injection apparatus, boiler, catalyst injection device, and catalytic reactor, wherein, described tank used for storing ammonia couples the reducing agent delivery pump, described reducing agent delivery pump, air compressor machine, and the dilution water pump all is coupled to blender, described blender couples described vaporising device, described vaporising device couples respectively on-catalytic injection apparatus and catalyst injection device, described on-catalytic injection apparatus sprays ammonia in described boiler body, described catalyst injection device is sprayed ammonia in upper boiler in boiler, described catalytic reactor couples described upper boiler.The denitrification apparatus of described mixed catalytic also can comprise air preheater, and described catalytic reactor is coupled with exhanst gas outlet by described air preheater.
Flue gas is generated by boiler 8, carry out initial reaction with the ammonia that ejects in the on-catalytic injection apparatus 7, remove the part nitrogen oxide, flue gas continues upwards, and temperature constantly descends, when flue gas drops to 300-400 degree centigrade, the ammonia that ejects with catalyst injection device 9 fully contacts, and then flue gas enters catalytic reactor 10 and carries out catalytic reduction reaction, fully removes nitrogen oxide.Then the flue gas of removing nitrogen oxide enters air preheater 11 and is discharged by exhanst gas outlet.Tank used for storing ammonia 1 interior storage ammoniacal liquor, by reducing agent delivery pump 2 ammoniacal liquor is delivered to blender 4, carry the pressure-air of coming and the fresh water (FW) that dilutes water pump 6 conveyings fully to mix with air compressor machine 3, mixed liquid enters vaporising device 5 and fully evaporates, for injection apparatus provides qualified ammonia.Thereby reach whole system to the removal effect of nitrogen oxides in effluent.
Although illustrated and described preferred embodiment of the present utility model, it is contemplated that those skilled in the art can design various modifications of the present utility model in the spirit and scope of claims.
Claims (2)
1. the denitrification apparatus of a mixed catalytic is characterized in that:
The denitrification apparatus of this mixed catalytic comprises tank used for storing ammonia, reducing agent delivery pump, air compressor machine, blender, vaporising device, dilution water pump, on-catalytic injection apparatus, boiler, catalyst injection device and catalytic reactor,
Wherein, described tank used for storing ammonia couples the reducing agent delivery pump, described reducing agent delivery pump, air compressor machine and dilution water pump all are coupled to blender, described blender couples described vaporising device, described vaporising device couples respectively on-catalytic injection apparatus and catalyst injection device, described on-catalytic injection apparatus sprays ammonia in described boiler body, described catalyst injection device is sprayed ammonia in upper boiler in boiler, and described catalytic reactor couples described upper boiler.
2. the denitrification apparatus of mixed catalytic as claimed in claim 1 is characterized in that:
The denitrification apparatus of described mixed catalytic also comprises air preheater, and described catalytic reactor is coupled with exhanst gas outlet by described air preheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364478 CN202751952U (en) | 2012-07-25 | 2012-07-25 | Mixed catalytic denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364478 CN202751952U (en) | 2012-07-25 | 2012-07-25 | Mixed catalytic denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202751952U true CN202751952U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201220364478 Expired - Fee Related CN202751952U (en) | 2012-07-25 | 2012-07-25 | Mixed catalytic denitration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383808A (en) * | 2014-12-03 | 2015-03-04 | 天津天和环能科技有限公司 | Process and device for carrying out flue gas denitrification by utilizing solid organic denitrifying agent |
| CN105561754A (en) * | 2016-02-18 | 2016-05-11 | 山东巨亚环保科技股份有限公司 | Boiler denitration device |
-
2012
- 2012-07-25 CN CN 201220364478 patent/CN202751952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383808A (en) * | 2014-12-03 | 2015-03-04 | 天津天和环能科技有限公司 | Process and device for carrying out flue gas denitrification by utilizing solid organic denitrifying agent |
| CN105561754A (en) * | 2016-02-18 | 2016-05-11 | 山东巨亚环保科技股份有限公司 | Boiler denitration device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing AVIC Tianye Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| 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: 20130227 Termination date: 20180725 |