CN215939319U

CN215939319U - Environment-friendly flue gas denitration device

Info

Publication number: CN215939319U
Application number: CN202122445638.4U
Authority: CN
Inventors: 陆佩军; 张世冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-03-04
Anticipated expiration: 2031-10-11

Abstract

The utility model relates to the technical field of environmental protection, and particularly discloses an environment-friendly flue gas denitration device which comprises a first treatment box, wherein a first mounting plate is arranged inside the first treatment box, a venturi tube penetrates through the first mounting plate, a filter bag frame is arranged at the lower end of the venturi tube, a dust removal filter bag is sleeved on the outer side wall of the filter bag frame, a compressed air storage tank is arranged at the upper end of the first treatment box, a first branch pipe is connected with the compressed air storage tank through a pipeline, and a first nozzle is arranged at the lower end of the first branch pipe. According to the utility model, through arranging the first mounting plate, the venturi tube, the filter bag frame and the dust removal filter bag, the flue gas is firstly filtered, large-particle dust contained in the flue gas is removed, the large-particle dust is prevented from entering the device to block the device, and the denitration working efficiency of the flue gas is improved.

Description

Environment-friendly flue gas denitration device

Technical Field

The utility model relates to the technical field of environmental protection, in particular to an environment-friendly flue gas denitration device.

Background

Flue gas denitration refers to a process of reducing nitrogen oxides in combustion flue gas into nitrogen gas to remove the nitrogen oxides in the flue gas, and can be divided into wet denitration and dry denitration according to treatment processes, so that the importance of environmental pollution prevention is pointed out as a problem in the world, with the development of modern industrial production and the improvement of living standard, air pollution becomes a very concerned problem, and in order to avoid environmental pollution caused by the emission of nitrogen oxides into the atmosphere, flue gas denitration is particularly important.

However, in the existing denitration device, the flue gas contains large-particle dust, the large-particle dust directly enters the flue gas denitration device and easily blocks the device, the work efficiency and the quality of flue gas denitration are affected, and nitrogen oxide and ammonia gas in the flue gas are not thoroughly mixed, so that the contact time is not long, and the flue gas denitration is not thorough.

Disclosure of Invention

Aiming at the existing problems, the utility model provides an environment-friendly flue gas denitration device, and the device comprises a first mounting plate, a compressed air storage tank, a filter bag frame, a venturi tube, a dust removal filter bag, a first branch pipe and a first nozzle which are matched for use, so that the problems in the background art can be effectively solved.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides an environment-friendly flue gas denitrification facility, handles the case including first processing case and second, the inside of first processing case is provided with first mounting panel, it is provided with the venturi tube to run through on the first mounting panel, the lower extreme of venturi tube is provided with the filter bag frame, the lateral wall of filter bag frame cup joints and is provided with the dust bag, the upper end of first processing case is provided with the compressed air holding vessel, the compressed air holding vessel is provided with first branch pipe through the pipe connection, the lower extreme of first branch pipe is provided with first nozzle, first nozzle is located the venturi tube directly over.

As a still further scheme of the utility model: a second mounting plate is arranged in the second processing box, a mounting box is arranged in the middle of the second mounting plate, a driving motor is arranged in the mounting box, the output end of the driving motor is provided with a rotating shaft, the rotating shaft is provided with a stirring blade, the upper end of the second processing box is provided with a compressed ammonia storage tank, a second branch pipe is arranged in the second treatment box, a second nozzle is arranged at the lower end of the second branch pipe, the upper end of the second branch pipe is provided with a third pipeline, the second branch pipe is connected with the compressed ammonia gas storage tank through the third pipeline, a honeycomb catalyst plate is arranged above the second branch pipe, a heater is arranged on the inner side wall of the second treatment box, the heater is located the second mounting panel with between the honeycomb catalyst board, be provided with the through-hole on the second mounting panel.

As a still further scheme of the utility model: one side that the inside top of case was handled to the second is provided with the air-blower, the first output of air-blower runs through the second and handles the case and be provided with the gas outlet, cup joint on the gas outlet and be provided with the second valve, the second output of air-blower runs through the second and handles the case and be provided with the second pipeline.

As a still further scheme of the utility model: the bottom is provided with the deposition bucket in the first processing case, the output of deposition bucket runs through first processing case and is provided with the ash discharge mouth, cup joint on the ash discharge mouth and be provided with first valve.

As a still further scheme of the utility model: the bottom is provided with the ponding fill in the second processing case, the output of ponding fill runs through the second and handles the case and be provided with the outlet, cup joint on the outlet and be provided with the third valve.

As a still further scheme of the utility model: the first case that handles is provided with into the gas port, the first case that handles is located the one side of keeping away from into the gas port and is provided with first pipeline, the first case that handles with the second is handled the case and is passed through first pipe connection.

As a still further scheme of the utility model: the first case of handling with the lower extreme of second processing case all is fixed and is provided with the supporting leg.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the environment-friendly flue gas denitration device, the first mounting plate, the venturi tube, the filter bag frame and the dust removal filter bag are arranged, flue gas is firstly filtered, large particle dust contained in the flue gas is removed, the phenomenon that the large particle dust enters the device to block the device is avoided, the work efficiency of denitration of the flue gas is improved, nitrogen oxides in the flue gas are thoroughly mixed with ammonia gas through rotation of the stirring blades, stable catalytic reduction reaction of the flue gas at a proper temperature is realized through the arrangement of the heater, the mixture is more thoroughly contacted with the catalyst layer through the arrangement of the honeycomb type catalyst plate, and the work efficiency of denitration of the flue gas is improved.

1. According to the environment-friendly flue gas denitration device, the compressed air storage tank, the first branch pipe and the first nozzle are arranged, when the dust removal filter bag is blocked, compressed air is sprayed to the venturi tube, so that dust attached to the dust removal filter bag falls off, the air outlet, the second valve, the air blower and the second pipeline are arranged, the second valve is closed, so that the denitrated flue gas enters the second pipeline through the second output end of the air blower and enters the second treatment box again for continuous denitration, the content of nitrogen oxides in the flue gas is reduced, air pollution caused by the nitrogen oxides in the flue gas is avoided, and the ecological environment is protected.

Drawings

FIG. 1 is a schematic structural diagram of an environment-friendly flue gas denitration device;

FIG. 2 is a schematic front view of an environment-friendly flue gas denitration apparatus;

FIG. 3 is a schematic structural diagram of a first treatment box in an environment-friendly flue gas denitration device;

FIG. 4 is a schematic structural diagram of a second treatment box in the environment-friendly flue gas denitration device;

fig. 5 is a schematic structural diagram of a second mounting plate in the environment-friendly flue gas denitration device.

In the figure: 1. a first treatment tank; 2. a second treatment tank; 3. a compressed air storage tank; 4. a compressed ammonia gas storage tank; 5. an air outlet; 6. an air inlet; 7. a first conduit; 8. a second conduit; 9. supporting legs; 10. a first mounting plate; 11. a filter bag frame; 12. a venturi; 13. a dust removal filter bag; 14. a first branch pipe; 15. a first nozzle; 16. an ash discharge port; 17. a first valve; 18. an ash accumulation hopper; 19. a blower; 20. a second valve; 21. a third pipeline; 22. a second branch pipe; 23. a second nozzle; 24. a heater; 25. a second mounting plate; 26. installing a box; 27. a drive motor; 28. a rotating shaft; 29. stirring blades; 30. a through hole; 31. a water accumulation hopper; 32. a water outlet; 33. a third valve; 34. a honeycomb catalyst plate.

Detailed Description

The utility model is further described below in connection with specific embodiments.

As shown in fig. 1-5, in this embodiment, the embodiment is described with reference to fig. 1 to 5, and the embodiment provides an environment-friendly flue gas denitration device, which includes a first treatment tank 1 and a second treatment tank 2, a first mounting plate 10 is disposed inside the first treatment tank 1, a venturi tube 12 is disposed on the first mounting plate 10 in a penetrating manner, a filter bag frame 11 is disposed at a lower end of the venturi tube 12, a dust removal filter bag 13 is disposed on an outer side wall of the filter bag frame 11 in a sleeved manner, by disposing the first mounting plate 10, the venturi tube 12, the filter bag frame 11 and the dust removal filter bag 13, the flue gas is firstly filtered to remove large-particle dust contained in the flue gas, prevent the large-particle dust from entering the second treatment tank 2 to block the device, and improve the denitration efficiency of the flue gas, a compressed air storage tank 3 is disposed at an upper end of the first treatment tank 1, the compressed air storage tank 3 is connected to a first branch pipe 14 through a pipe, the lower extreme of first branch pipe 14 is provided with first nozzle 15, first nozzle 15 is located venturi tube 12 directly over, through setting up compressed air holding vessel 3, first branch pipe 14 and first nozzle 15, when dust removal filter bag 13 is blockked up, through spraying compressed air to venturi tube 12, make the dust attached to on dust removal filter bag 13 drop, the bottom is provided with deposition bucket 18 in the first processing case 1, the output of deposition bucket 18 runs through first processing case 1 and is provided with dust exhaust 16, the cup joint is provided with first valve 17 on the dust exhaust 16, be provided with into gas port 6 on the first processing case 1, one side that first processing case 1 is located to keep away from into gas port 6 is provided with first pipeline 7, first processing case 1 is connected through first pipeline 7 with second processing case 2.

As shown in fig. 4-5, a second mounting plate 25 is arranged inside the second treatment tank 2, a mounting tank 26 is arranged in the middle of the second mounting plate 25, a driving motor 27 is arranged in the mounting tank 26, the output end of the driving motor 27 is provided with a rotating shaft 28, a stirring blade 29 is arranged on the rotating shaft 28, the nitrogen oxide in the flue gas is thoroughly mixed with the ammonia gas through the rotation of the stirring blade 29, a compressed ammonia gas storage tank 4 is arranged at the upper end of the second treatment tank 2, a second branch pipe 22 is arranged inside the second treatment tank 2, a second nozzle 23 is arranged at the lower end of the second branch pipe 22, a third pipeline 21 is arranged at the upper end of the second branch pipe 22, the second branch pipe 22 is connected with the compressed ammonia gas storage tank 4 through the third pipeline 21, a honeycomb catalyst plate 34 is arranged above the second branch pipe 22, a heater 24 is arranged on the inner side wall of the second treatment tank 2, and by arranging the heater 24, the stable catalytic reduction reaction of the flue gas is realized at a proper temperature, the heater 24 is positioned between the second mounting plate 25 and the honeycomb catalyst plate 34, the honeycomb catalyst plate 34 is arranged, so that the mixture is contacted with the catalyst layer more thoroughly, the working efficiency of flue gas denitration is improved, the through hole 30 is arranged on the second mounting plate 25, the blower 19 is arranged on one side of the top end in the second processing box 2, the first output end of the blower 19 penetrates through the second processing box 2 and is provided with the air outlet 5, the second valve 20 is sleeved on the air outlet 5, the second output end of the blower 19 penetrates through the second processing box 2 and is provided with the second pipeline 8, the denitrated flue gas enters the second pipeline 8 through the second output end of the blower 19 by arranging the air outlet 5, the second valve 20, the blower 19 and the second pipeline 8 and closing the second valve 20, get into the second again and handle case 2 and continue the denitration, nitrogen oxide's content in the flue gas has been reduced, avoid the nitrogen oxide contaminated air in the flue gas, ecological environment has been protected, the bottom is provided with ponding fill 31 in the case 2 is handled to the second, the output that ponding fill 31 runs through the second and handles case 2 and be provided with outlet 32, it is provided with third valve 33 to cup joint on the outlet 32, the first case 1 of handling is all fixed supporting leg 9 that is provided with the lower extreme of second processing case 2, the stability of device has been improved.

The working principle of the utility model is as follows: when the device works, smoke generated in an incinerator or an industrial boiler enters a first treatment box through an air inlet 6, a second valve 20 is closed, an air blower 19 is started, a dust removal filter bag 13 firstly filters the smoke to remove large-particle dust contained in the smoke, the large-particle dust is prevented from entering a second treatment box 2, the dedusted smoke enters the second treatment box 2 through a first pipeline 7, a heater 24 is started, a driving motor is started, the air blower 19 is closed, nitrogen oxides in the smoke are thoroughly mixed with ammonia gas through rotation of a stirring blade 29, stable catalytic reduction reaction of the smoke at a proper temperature is realized through the arrangement of the heater 24, then the ammonia gas is sprayed into the second treatment box 2 through a second nozzle 23 to be mixed with the smoke gas, after the mixture is mixed for a period of time, the air blower 19 is started, and the mixture is subjected to oxidation reduction reaction through a honeycomb type catalyst plate 34, guarantee the flue gas and fully contact with the catalyst through setting up honeycomb catalyst board 34, improved the work efficiency of flue gas denitration, the nitrogen oxide in ammonia and the flue gas carries out redox chemical reaction under the catalytic action of catalyst, generates harmless nitrogen and water and discharges.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The environment-friendly flue gas denitration device comprises a first treatment box (1) and a second treatment box (2), and is characterized in that a first mounting plate (10) is arranged inside the first treatment box (1), a venturi tube (12) is arranged on the first mounting plate (10) in a penetrating manner, a filter bag frame (11) is arranged at the lower end of the venturi tube (12), a dust removal filter bag (13) is sleeved on the outer side wall of the filter bag frame (11), a compressed air storage tank (3) is arranged at the upper end of the first treatment box (1), a first branch pipe (14) is connected and arranged on the compressed air storage tank (3) through a pipeline, a first nozzle (15) is arranged at the lower end of the first branch pipe (14), the first nozzle (15) is positioned right above the venturi tube (12), and an ash deposition hopper (18) is arranged at the inner bottom of the first treatment box (1), the output end of the dust accumulation hopper (18) penetrates through the first treatment box (1) and is provided with a dust discharge port (16).

2. The environment-friendly flue gas denitration device according to claim 1, wherein a second mounting plate (25) is arranged inside the second treatment box (2), a mounting box (26) is arranged in the middle of the second mounting plate (25), a driving motor (27) is arranged in the mounting box (26), a rotating shaft (28) is arranged at the output end of the driving motor (27), a stirring blade (29) is arranged on the rotating shaft (28), a compressed ammonia storage tank (4) is arranged at the upper end of the second treatment box (2), and a second branch pipe (22) is arranged inside the second treatment box (2).

3. The environment-friendly flue gas denitration device according to claim 2, wherein a second nozzle (23) is arranged at the lower end of the second branch pipe (22), a third pipeline (21) is arranged at the upper end of the second branch pipe (22), the second branch pipe (22) is connected with the compressed ammonia storage tank (4) through the third pipeline (21), a honeycomb type catalyst plate (34) is arranged above the second branch pipe (22), a heater (24) is arranged on the inner side wall of the second treatment box (2), the heater (24) is positioned between the second mounting plate (25) and the honeycomb type catalyst plate (34), and a through hole (30) is arranged on the second mounting plate (25).

4. The environment-friendly flue gas denitration device according to claim 1, wherein an air blower (19) is arranged on one side of the top end inside the second treatment box (2), a first output end of the air blower (19) penetrates through the second treatment box (2) to be provided with an air outlet (5), a second valve (20) is sleeved on the air outlet (5), and a second output end of the air blower (19) penetrates through the second treatment box (2) to be provided with a second pipeline (8).

5. The environment-friendly flue gas denitration device according to claim 1, wherein a water accumulation bucket (31) is arranged at the bottom in the second treatment tank (2), an output end of the water accumulation bucket (31) penetrates through the second treatment tank (2) to be provided with a water outlet (32), and a third valve (33) is sleeved on the water outlet (32).

6. The environment-friendly flue gas denitration device according to claim 1, wherein the first treatment box (1) is provided with an air inlet (6), a first pipeline (7) is arranged on one side of the first treatment box (1) far away from the air inlet (6), and the first treatment box (1) and the second treatment box (2) are connected through the first pipeline (7).

7. The environment-friendly flue gas denitration device according to claim 1, wherein the lower ends of the first treatment box (1) and the second treatment box (2) are both fixedly provided with support legs (9), and the ash discharge port (16) is sleeved with a first valve (17).