CN212142071U - Rear-end atomizing low-ammonia denitration spray gun - Google Patents
Rear-end atomizing low-ammonia denitration spray gun Download PDFInfo
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- CN212142071U CN212142071U CN202020336704.7U CN202020336704U CN212142071U CN 212142071 U CN212142071 U CN 212142071U CN 202020336704 U CN202020336704 U CN 202020336704U CN 212142071 U CN212142071 U CN 212142071U
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- spray gun
- protective sleeve
- atomizer
- denitration
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Abstract
The utility model belongs to the technical field of industrial flue gas denitration equipment, in particular to a rear-end atomization low-ammonia denitration spray gun, which is characterized in that the head of the spray gun is provided with a nozzle; a protective sleeve is surrounded outside the spray gun, and an interlayer is arranged in the protective sleeve; the rear end of the spray gun is connected with an atomizer, the atomizer is internally divided into two bin bodies by a partition with a hole, and the bin body close to one side of the spray gun is communicated with a liquid inlet; the bin body far away from one side of the spray gun is communicated with the compressed air interface, the rear end of the protective sleeve is communicated with the bin body far away from one side of the spray gun through a cooling air pipe, and compressed air is introduced into the interlayer of the protective sleeve. The spray gun prolongs the service life of the spray gun; the reducing agent is fully atomized by the atomizer, so that the working efficiency of the denitration reaction zone is improved; the peripheral pipeline setting of denitration reaction zone has been simplified, is worth promoting.
Description
Technical Field
The utility model belongs to the technical field of industry flue gas denitration equipment, specifically be a low ammonia denitration spray gun of rear end atomizing.
Background
NOxIs one of the main atmospheric pollutants, and has serious harm to human bodies. NO paralyzes the central nerve of the human and causes asphyxia death; NO2Is more toxic than NO and causesAsthma and emphysema result in loss of function of the heart, lungs, liver, kidneys and hematopoietic tissues of a human. In the process of making rain in the atmosphere, nitrogen oxides are absorbed by liquid drops formed by water vapor condensation to form acid rain and photochemical smog, and the ecological environment of the earth is seriously damaged. The Selective Catalytic Reduction (SCR) technology is to reduce NH under the action of a catalyst3(liquid ammonia, ammonia water, urea, etc.) and NO in flue gasXReaction, NO in the flue gasXReducing the nitrogen into nontoxic and pollution-free nitrogen N2And water H2And O. The reactor is arranged between the outlet of a boiler economizer and the inlet of an air preheater, the reaction temperature is generally between 320 ℃ and 400 ℃, the SCR denitration technology is the most mature and reliable denitration technology at home and abroad at present, the denitration efficiency is high, and the system is safe and stable.
Publication number 204602468U's utility model patent discloses a denitration spray gun, and the spray gun outside is enclosed there is hollow cooling jacket, and cooling jacket needs with sweep wind air interface connection, and the spray gun bottom is connected with compressed air interface and inlet. The spray gun is required to be connected with three pipelines at the same time, so that the arrangement of the pipelines outside the boiler is complicated; when the spray gun is used, the compressed air interface and the liquid inlet cannot be completely mixed in the spray gun, so that the reducing agent is insufficiently atomized during spraying. Thus, there is still room for improvement in the above structure.
In addition, the original protective sleeve is fixed outside the spray head to prevent the spray gun from being influenced by high temperature; in actual operation, the protective sleeve is made of silicon carbide and is easy to break in use, so that the effect of protecting the spray gun is poor.
Disclosure of Invention
To current denitration spray gun pipeline arrangement heavy and complicated, the insufficient defect of atomizing, the utility model provides a low ammonia denitration spray gun of rear end atomizing.
The utility model discloses a rear-end atomization low-ammonia denitration spray gun, which is characterized in that the head of the spray gun is provided with a nozzle; a protective sleeve is surrounded outside the spray gun, and an interlayer is arranged in the protective sleeve; the rear end of the spray gun is connected with an atomizer, the atomizer is internally divided into two bin bodies by a partition with a hole, and the bin body close to one side of the spray gun is communicated with a liquid inlet; the bin body far away from one side of the spray gun is communicated with the compressed air interface, the rear end of the protective sleeve is communicated with the bin body far away from one side of the spray gun through a cooling air pipe, and compressed air is introduced into the interlayer of the protective sleeve.
Specifically, an installation sleeve is arranged outside the protective sleeve and is fixed on the furnace wall; the tail end of the installation sleeve is provided with a quick connector.
Specifically, the protective sleeve is made of stainless steel, compressed air is introduced into the sleeve to serve as cooling gas, and the spray gun is protected from being affected by high temperature.
Optimally, the nozzle is provided with a plurality of through holes which are uniformly arranged in a straight line, and the through holes can form a barrier on the injection path of the reducing agent, so that the reducing agent is fully atomized again and fan-shaped spray is formed.
The protective sleeve surrounds the whole spray gun, and the spray gun is protected from being damaged when extending into the kiln; the reducing agent is fully atomized in the atomization bin, the spray is sprayed in a fan shape and enters the furnace kiln for reaction, and meanwhile, the protective sleeve cools the spray gun. The quick connector is convenient for separating the spray gun and the protective sleeve from the mounting sleeve so as to achieve the purpose of quickly replacing accessories.
The utility model discloses a denitration spray gun, has prolonged the life of spray gun; the reducing agent is fully atomized by the atomizer, and even if the nozzle is damaged, the reducing agent enters the denitration reaction zone in an atomized state, so that the working efficiency of the denitration reaction zone [ A1] is improved; the peripheral pipeline setting in denitration reaction zone has been simplified, is worth promoting.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial enlarged view of the nozzle portion of the present invention.
The device comprises a nozzle 1, a protective sleeve 2, an atomizer 3, a liquid inlet 4, a compressed air interface 5, a cooling air pipe 6, an installation sleeve 7 and a quick coupling 8.
Detailed Description
Example 1: the rear-end atomization low-ammonia denitration spray gun is characterized in that a spray nozzle 1 is arranged at the head of the spray gun, and a plurality of through holes are formed in the spray nozzle 1 and are uniformly arranged in a straight line; a protective sleeve 2 made of stainless steel is surrounded outside the spray gun, and an interlayer is arranged in the protective sleeve 2; the rear end of the spray gun is connected with an atomizer 3, the atomizer 3 is internally divided into two bin bodies by a partition with a hole, and the bin body close to one side of the spray gun is communicated with a liquid inlet 4; the bin body far away from one side of the spray gun is communicated with a compressed air interface 5, the rear end of the protective sleeve 2 is communicated with the bin body far away from one side of the spray gun through a cooling air pipe 6, and compressed air is introduced into the interlayer of the protective sleeve 2; an installation sleeve 7 is arranged outside the protective sleeve 2, and the installation sleeve 7 is fixed on the furnace wall; the tail end of the mounting sleeve 7 is provided with a quick connector 8.
The embodiment of the present invention is only a partial embodiment of the present invention, the protective sleeve 2 may also be made of other alloy materials with high temperature resistance and corrosion resistance, and the shape of the nozzle 1 may also be modified according to the specific design shape of the boiler, and as long as the specific structure disclosed in the summary of the invention is adopted, all of them should fall into the protection object of the present invention.
Claims (4)
1. The rear end atomizing low-ammonia denitration spray gun is characterized in that the head of the spray gun is provided with a nozzle (1); a protective sleeve (2) is surrounded outside the spray gun, and an interlayer is arranged in the protective sleeve (2); the rear end of the spray gun is connected with an atomizer (3), the atomizer (3) is internally divided into two bin bodies by a partition with a hole, and the bin body close to one side of the spray gun is communicated with a liquid inlet (4); keep away from the storehouse body and the compressed air interface (5) intercommunication of spray gun one side, protective case (2) rear end through cooling air pipe (6) with keep away from the storehouse body intercommunication of spray gun one side, let in compressed gas in the intermediate layer of protective case (2).
2. The rear-end atomizing low-ammonia denitration spray gun of claim 1, characterized in that a mounting sleeve (7) is arranged outside the protective sleeve (2), and the mounting sleeve (7) is fixed on the wall of the furnace; the tail end of the mounting sleeve (7) is provided with a quick joint (8).
3. The rear-end atomizing low-ammonia denitration lance of claim 1, wherein the protective sleeve (2) is made of stainless steel.
4. The rear-end atomizing low-ammonia denitration lance of claim 1, wherein the nozzle (1) is provided with a plurality of through holes which are linearly and uniformly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336704.7U CN212142071U (en) | 2020-03-19 | 2020-03-19 | Rear-end atomizing low-ammonia denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020336704.7U CN212142071U (en) | 2020-03-19 | 2020-03-19 | Rear-end atomizing low-ammonia denitration spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212142071U true CN212142071U (en) | 2020-12-15 |
Family
ID=73714485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020336704.7U Expired - Fee Related CN212142071U (en) | 2020-03-19 | 2020-03-19 | Rear-end atomizing low-ammonia denitration spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212142071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430535A (en) * | 2022-06-30 | 2022-12-06 | 国家能源集团谏壁发电厂 | Atomizing spray gun and SO 3 Removal equipment |
-
2020
- 2020-03-19 CN CN202020336704.7U patent/CN212142071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430535A (en) * | 2022-06-30 | 2022-12-06 | 国家能源集团谏壁发电厂 | Atomizing spray gun and SO 3 Removal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20201215 Termination date: 20210319 |