CN220214489U

CN220214489U - SNCR denitrification facility

Info

Publication number: CN220214489U
Application number: CN202321105250.2U
Authority: CN
Inventors: 刘华
Original assignee: Fuzhou Qingjing Environmental Protection Equipment Co ltd
Current assignee: Fuzhou Qingjing Environmental Protection Equipment Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-12-22
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses an SNCR denitration device, which relates to the technical field of waste gas treatment and comprises an ammonia solution storage tank and a decomposing furnace, wherein one side of the ammonia solution storage tank is provided with a solution pump and a tap water pump, a liquid inlet of the solution pump is connected with the ammonia solution storage tank through a pipeline I, liquid outlets of the solution pump and the tap water pump are connected with the same pipeline mixer through a pipeline II, and an outlet of the pipeline mixer is provided with a plurality of pipelines IV through a pipeline III. According to the denitration device, the ammonia water solution storage tank, the solution pump, the tap water pump, the pipeline mixer, the branch pipe and the spray gun group are matched, the solution pump pumps the ammonia water in the ammonia water solution storage tank, the tap water pump pumps external tap water, and the ammonia water and the tap water are fully mixed in the pipeline mixer and then directly enter the spray gun group for spraying, namely the denitration device can spray while mixing the reducing agent containing amino, so that the flue gas treatment workload is reduced, and the flue gas treatment efficiency is improved.

Description

SNCR denitrification facility

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to an SNCR denitration device.

Background

With the development of economy, the emission of nitrogen oxide pollutants is rapidly increased, the ecological environment is seriously polluted, and the method becomes one of important factors limiting the economic development, wherein the coal-fired boiler has a large emission, is relatively concentrated and is easier to control than other dispersion sources, and becomes a first-choice target for controlling nitrogen oxides, wherein SNCR (selective non-catalytic reduction) is a clean denitration technology for spraying an amino-containing reducing agent (such as ammonia water, urea solution and the like) into the boiler at the temperature of 850-1100 ℃ to reduce and remove the nitrogen oxides in the flue gas and generate nitrogen and water.

At present, when nitrogen oxides in flue gas are treated, the flue gas is sprayed by adopting an amino-containing reducing agent, the traditional treatment equipment cannot spray the amino-containing reducing agent while mixing the amino-containing reducing agent, and the mixing of the amino-containing reducing agent is required to be finished in advance, so that the flue gas treatment efficiency is reduced, and meanwhile, the workload is increased.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides an SNCR denitration device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a SNCR denitrification facility, includes aqueous ammonia solution storage tank and decomposing furnace, aqueous ammonia solution storage tank one side is equipped with solution pump and running water pump, solution pump inlet is connected with aqueous ammonia solution storage tank through pipeline one, solution pump and running water pump's liquid outlet are connected with same pipeline blender through pipeline two, pipeline blender export is installed many pipelines four through pipeline three intercommunication, decomposing furnace inner wall installs a plurality of spray gun groups, every spray gun group comprises a plurality of spray gun main parts, pipeline four-way branch pipe is connected with the spray gun group of corresponding one side, many pipeline four intercommunication is connected with same pressurization subassembly.

As a further description of the above technical solution:

and a ball valve I is arranged on one side wall of the pipeline.

As a further description of the above technical solution:

check valves are arranged on two side walls of the two pipelines.

As a further description of the above technical solution:

and a temperature sensor is fixedly arranged on the side wall of the decomposing furnace.

As a further description of the above technical solution:

ball valves II are arranged on four side walls of the plurality of pipelines.

As a further description of the above technical solution:

the branch pipe comprises a main pipe which is communicated and connected with the corresponding pipeline four, a plurality of branch pipes are communicated and connected with the main pipe, a plurality of branch pipes are respectively communicated and connected with a plurality of spray gun main bodies, and ball valves three are arranged on the side walls of the branch pipes.

As a further description of the above technical solution:

the pressurizing assembly comprises an air compressor, an outlet of the air compressor is connected with a plurality of pipelines six through pipelines five, the pipelines six are correspondingly connected with a plurality of pipelines four, and ball valves four are arranged on the side walls of the pipelines six.

The utility model has the following beneficial effects:

compared with the prior art, the SNCR denitration device has the advantages that through the mutual cooperation among the ammonia solution storage tank, the solution pump, the tap water pump, the pipeline mixer, the branch pipe and the spray gun set, the solution pump pumps ammonia water in the ammonia solution storage tank, the tap water pump pumps external tap water, and the ammonia water and the external tap water are fully mixed in the pipeline mixer and then directly enter the spray gun set for spraying, namely, the denitration device can spray while mixing an amino-containing reducing agent, so that the flue gas treatment workload is reduced, and the flue gas treatment efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of an SNCR denitration device according to the present utility model.

Legend description:

1. an ammonia solution storage tank; 2. a decomposing furnace; 3. a solution pump; 4. a tap water pump; 5. a first pipeline; 6. a second pipeline; 7. a pipe mixer; 8. a third pipeline; 9. a fourth pipeline; 10. a spray gun set; 11. a ball valve I; 12. a check valve; 13. a temperature sensor; 14. a ball valve II; 15. a header pipe; 16. a branch pipe; 17. a ball valve III; 18. an air compressor; 19. a fifth pipeline; 20. a sixth pipeline; 21. and a ball valve IV.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the utility model provides an SNCR denitration device: including aqueous ammonia solution storage tank 1 and decomposing furnace 2, decomposing furnace 2 lateral wall fixed mounting has temperature-sensing ware 13, and temperature-sensing ware 13's setting makes things convenient for the staff to in time know the interior temperature of decomposing furnace 2, avoids because of the potential safety hazard that the high temperature causes, aqueous ammonia solution storage tank 1 one side is equipped with solution pump 3 and running water pump 4, and solution pump 3 inlet is connected with aqueous ammonia solution storage tank 1 through pipeline one 5, and pipeline one 5 lateral wall installs ball valve one 11, still is equipped with the flue gas admission line that does not show in the figure and is used for discharging nitrogen gas and water pipeline on the decomposing furnace 2.

The liquid outlets of the solution pump 3 and the tap water pump 4 are connected with the same pipeline mixer 7 through the second pipeline 6, the side walls of the two pipelines 6 are provided with check valves 12, and the backflow of liquid in the second pipeline 6 can be effectively prevented by arranging the check valves 12, so that the liquid in the second pipeline 6 can only enter the pipeline mixer 7 for mixing.

The outlet of the pipeline mixer 7 is provided with a plurality of pipelines IV 9 through the communication of a pipeline III 8, ball valves II 14 are respectively arranged on the side walls of the pipelines IV 9, a plurality of spray gun groups 10 are arranged on the inner wall of the decomposing furnace 2, each spray gun group 10 consists of a plurality of spray gun main bodies, the pipelines IV 9 are connected with the spray gun group 10 on the corresponding side through branch pipes, the branch pipes comprise a main pipe 15 which is communicated and connected with the corresponding pipelines IV 9, the main pipe 15 is communicated and connected with a plurality of branch pipes 16, the plurality of branch pipes 16 are respectively communicated and connected with the plurality of spray gun main bodies, and ball valves III 17 are arranged on the side walls of the branch pipes 16.

The same pressurizing assembly is connected to the four 9 intercommunication of many pipelines, and pressurizing assembly includes air compressor machine 18, and the air compressor machine 18 export is connected with many pipelines six 20 through pipeline five 19, and many pipelines six 20 are connected with many pipelines four 9 in one-to-one, and ball valve four 21 is installed to pipeline six 20 lateral wall, utilizes air compressor machine 18 can effectively increase the pressure when spray gun main part sprays, reaches better spraying effect.

Working principle: the liquid inlet of the tap water pump 4 is connected with an external tap water source pipeline, when the device works, the solution pump 3 pumps ammonia water in the ammonia water solution storage tank 1, the tap water pump 4 pumps tap water, the ammonia water and the tap water enter the pipeline mixer 7 through the corresponding pipeline II 6 respectively to be fully mixed, the mixed solution enters the corresponding spray gun group 10 through the pipeline III 8, the pipeline IV 9 and the branch pipe to be sprayed, nitrogen oxides in smoke in the decomposing furnace 2 are reduced and removed, nitrogen and water are generated, and denitration treatment on the smoke is completed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. An SNCR denitration device, characterized in that: the device comprises an ammonia water solution storage tank (1) and a decomposing furnace (2), wherein a solution pump (3) and a tap water pump (4) are arranged on one side of the ammonia water solution storage tank (1), a liquid inlet of the solution pump (3) is connected with the ammonia water solution storage tank (1) through a first pipeline (5), a liquid outlet of the solution pump (3) and a liquid outlet of the tap water pump (4) are connected with the same pipeline mixer (7) through a second pipeline (6), a plurality of fourth pipelines (9) are installed at an outlet of the pipeline mixer (7) through a third pipeline (8) in a communicating manner, a plurality of spray gun groups (10) are installed on the inner wall of the decomposing furnace (2), each spray gun group (10) is composed of a plurality of spray gun main bodies, and the fourth pipelines (9) are connected with the spray gun groups (10) on the corresponding side through branch pipes and are connected with the same pressurizing assembly in a communicating manner.

A ball valve I (11) is arranged on the side wall of the first pipeline (5);

the side walls of the two pipelines II (6) are provided with check valves (12);

a temperature sensor (13) is fixedly arranged on the side wall of the decomposing furnace (2);

ball valves II (14) are arranged on the side walls of the four pipelines (9);

the branch pipe comprises a main pipe (15) which is communicated and connected with a corresponding pipeline IV (9), the main pipe (15) is communicated and connected with a plurality of branch pipes (16), the branch pipes (16) are respectively communicated and connected with a plurality of spray gun main bodies, and ball valves III (17) are arranged on the side walls of the branch pipes (16);

the pressurizing assembly comprises an air compressor (18), an outlet of the air compressor (18) is connected with a plurality of pipelines (20) through pipelines (19), the pipelines (20) are connected with a plurality of pipelines (9) in one-to-one correspondence, and ball valves (21) are arranged on the side walls of the pipelines (20).