CN218962242U - Household garbage incinerator sncr system injection apparatus - Google Patents
Household garbage incinerator sncr system injection apparatus Download PDFInfo
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- CN218962242U CN218962242U CN202221357576.XU CN202221357576U CN218962242U CN 218962242 U CN218962242 U CN 218962242U CN 202221357576 U CN202221357576 U CN 202221357576U CN 218962242 U CN218962242 U CN 218962242U
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- sncr
- spray gun
- pneumatic valve
- household garbage
- sncr spray
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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Abstract
The utility model relates to the technical field of garbage incinerators, in particular to a spraying device of a SNCR system of a household garbage incinerator, which comprises a first SNCR (selective non-catalytic reduction) spray gun, wherein a second SNCR spray gun is arranged below the first SNCR spray gun, one end of the first SNCR spray gun is connected with a first pneumatic valve through a conveying pipe, one end of the second SNCR spray gun is connected with a second pneumatic valve through a conveying pipe, a pipeline is connected between the second pneumatic valve and the first pneumatic valve, one sides of the first SNCR spray gun and the second SNCR spray gun are respectively provided with a temperature sensor, and the two temperature sensors are respectively extended into a boiler through reserved holes and are fixed by screws. The utility model has simple operation and strong practicability, effectively solves the problem of efficiency reduction caused by that the SNCR system is not at proper temperature during operation, and ensures that the environmental protection index reaches the standard for emission.
Description
Technical Field
The utility model relates to the technical field of garbage incinerators, in particular to an injector of a sncr system of a household garbage incinerator.
Background
The SNCR denitration technology is a clean denitration technology which does not need a catalyst, sprays an amino-containing reducing agent (such as ammonia water, urea solution and the like) into a furnace at the temperature of 850-1100 ℃ and reduces and removes NOX in flue gas to generate nitrogen and water. In a proper temperature region, and with ammonia water as a reducing agent, the reaction equation is as follows: 4NH3+4NO+O2→4N2+6H2O, different reducing agents have different reaction temperature ranges, and the temperature ranges are called temperature windows. When the reaction temperature is too high, the NOX reduction rate is reduced by decomposition of ammonia, and on the other hand, when the reaction temperature is too low, slip of ammonia is increased, and the NOX reduction rate is also reduced.
At present, the problem of ash accumulation exists on the water-cooled wall of the boiler of the garbage power plant, the temperature field of the boiler can be changed, the proper temperature area of the SNCR reaction is shifted upwards, and the reduction rate of NOX can be reduced due to the decomposition of ammonia, so that an optimized SNCR system injection method is provided.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a spraying device of a sncr system of a household garbage incinerator.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a domestic waste burns burning furnace SNCR system injection apparatus, includes first SNCR spray gun, the below of first SNCR spray gun is equipped with the second SNCR spray gun, the one end of first SNCR spray gun is connected with first pneumatic valve through the conveyer pipe, the one end of second SNCR spray gun is connected with the second pneumatic valve through the conveyer pipe, be connected with the pipeline between second pneumatic valve and the first pneumatic valve, one side of first SNCR spray gun and second SNCR spray gun all is equipped with temperature sensor, two temperature sensor all extends to in the boiler through the preformed hole to with the screw fixation.
Preferably, the pipe is made of stainless steel material.
Preferably, one end of the pipeline is connected with an ammonia water storage tank.
Preferably, both the temperature sensors are connected with the controller through wires.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, on the basis of the original SNCR system, the SNCR spray gun is added, the spray point in the boiler is increased, and the reaction is carried out in a proper temperature zone in the boiler all the time.
The utility model has simple operation and strong practicability, effectively solves the problem of efficiency reduction caused by that the SNCR system is not at proper temperature during operation, and ensures that the environmental protection index reaches the standard for emission.
Drawings
FIG. 1 is a schematic diagram of a spraying device of a sncr system of a household garbage incinerator;
fig. 2 is a schematic diagram of a connection structure of a first SNCR spray gun and a second SNCR spray gun of the spraying device of the SNCR system of the household garbage incinerator.
In the figure: a first SNCR spray gun 1, a second SNCR spray gun 2, a temperature sensor 3, a first pneumatic valve 4, a second pneumatic valve 5, a pipeline 6 and an ammonia water storage tank 7.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The spraying device of the SNCR system of the household garbage incinerator comprises a first SNCR spray gun 1, a second SNCR spray gun 2 is arranged below the first SNCR spray gun 1, one end of the first SNCR spray gun 1 is connected with a first pneumatic valve 4 through a conveying pipe, one end of the second SNCR spray gun 2 is connected with a second pneumatic valve 5 through a conveying pipe, a pipeline 6 is connected between the second pneumatic valve 5 and the first pneumatic valve 4, one sides of the first SNCR spray gun 1 and the second SNCR spray gun 2 are respectively provided with a temperature sensor 3, and the two temperature sensors 3 are respectively extended into a boiler through reserved holes and are fixed through screws. The pipe 6 is made of stainless steel material. One end of the pipeline 6 is connected with an ammonia water storage tank 7. The two temperature sensors 3 are connected with the controller through wires, the controller is connected with the pneumatic pump through wires, and the pneumatic pump is connected with the two pneumatic valves through air pipes. The second pneumatic valve 5 and the first pneumatic valve 4 are installed in the inner wall of the boiler by pipe wiper.
Working principle: the temperature sensor 3 detects the temperature field of the current boiler section, when the lower temperature measuring point is reached, the second pneumatic valve 5 is closed, the first pneumatic valve 4 is opened, the SNCR system ammonia water enters the first SNCR spray gun 1 through the pipeline 6 for spraying, and when the upper temperature measuring point is reached, the first pneumatic valve 4 is closed, the second pneumatic valve 5 is opened, and the SNCR system ammonia water enters the second SNCR spray gun 2 through the pipeline 6 for spraying; the SNCR denitration efficiency can be optimized by reasonable injection points of the SNCR spray gun, so that the boiler can stably run, the fume emission index reaches the standard, and the ammonia water material consumption is reduced.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a household garbage incinerator SNCR system injection apparatus, includes first SNCR spray gun (1), its characterized in that, the below of first SNCR spray gun (1) is equipped with second SNCR spray gun (2), the one end of first SNCR spray gun (1) is connected with first pneumatic valve (4) through the conveyer pipe, the one end of second SNCR spray gun (2) is connected with second pneumatic valve (5) through the conveyer pipe, be connected with pipeline (6) between second pneumatic valve (5) and first pneumatic valve (4), one side of first SNCR spray gun (1) and second SNCR spray gun (2) all is equipped with temperature sensor (3), two temperature sensor (3) all extend to in the boiler through the preformed hole to with the screw fixation.
2. A household garbage incinerator sncr system injection device according to claim 1, characterized in that the pipe (6) is made of stainless steel material.
3. The spraying device of the sncr system of the household garbage incinerator according to claim 1, wherein one end of the pipeline (6) is connected with an ammonia water storage tank (7).
4. A household garbage incinerator sncr system injection device according to claim 1, characterized in that both temperature sensors (3) are connected to the controller by wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221357576.XU CN218962242U (en) | 2022-06-01 | 2022-06-01 | Household garbage incinerator sncr system injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221357576.XU CN218962242U (en) | 2022-06-01 | 2022-06-01 | Household garbage incinerator sncr system injection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218962242U true CN218962242U (en) | 2023-05-05 |
Family
ID=86156456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221357576.XU Active CN218962242U (en) | 2022-06-01 | 2022-06-01 | Household garbage incinerator sncr system injection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218962242U (en) |
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2022
- 2022-06-01 CN CN202221357576.XU patent/CN218962242U/en active Active
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