CN216395893U

CN216395893U - Device for reducing NOX content in coke oven flue gas

Info

Publication number: CN216395893U
Application number: CN202122591112.7U
Authority: CN
Inventors: 鲍俊贤; 袁胜敏; 常路岗; 黄天明; 詹承林
Original assignee: Qujing Dawei Coking Gas Supply Co ltd
Current assignee: Qujing Dawei Coking Gas Supply Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-29
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of flue gas treatment, and particularly discloses a device for reducing the content of NOX in flue gas of a coke oven. Through the design of baffle and two guide frames and a plurality of flue gas opening, can effectively realize utilizing the restriction water conservancy diversion effect of produced flue gas in-process to the coke oven, thereby utilize oxygen conveyer belt and ammonia conveyer belt to mix its corresponding gas and flue gas, make its roller rotate through the air pressure that flows, make the inside of corresponding catalyst powder in its catalyst storage box float into to the guide frame, and mix with corresponding gas and realize abundant reduction reaction, make the nitrogen oxide gas in its flue gas obtain effective reduction, thereby realize effective processing to nitrogen oxide and outwards discharge.

Description

Device for reducing NOX content in coke oven flue gas

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to a device for reducing the content of NOX in coke oven flue gas.

Background

The coke oven is a furnace built by refractory bricks and building blocks, is mainly used for carbonizing coal to produce coke, when the coke oven is used, oxygen which is not fully combusted can react with other substances produced in the coal combustion process to generate NOx (nitrogen oxide), and for limiting the generation condition of NOx, the existing treatment method generally carries out low-oxygen combustion treatment.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a device for reducing the content of NOX in the flue gas of a coke oven, which has the advantages of more effectively treating the discharge amount of NOX and the like and solves the problem that the effect of the traditional NOX reducing mode is not ideal.

The device for reducing the content of NOX in the coke oven smoke comprises a coke oven, two guide frames and a catalyst storage box, the inner side of the coke oven is integrally formed with a stop block, the outer side of the coke oven is fixedly communicated with a plurality of flue gas through holes, the two guide frames are respectively positioned at the two sides of the coke oven, two connecting rods are fixedly connected with the outer side of the guide frame, fixing plates are arranged at the end parts of the connecting rods, a plurality of fixing plates are connected with nuts by a plurality of bolts, the two end parts of the guide frame are fixedly communicated with connecting plates, one side of each connecting plate is provided with a guide pipe sleeved outside the smoke through hole, the outside of guide frame all is equipped with ammonia conveyer belt and oxygen conveyer belt, two the catalyst storage box is respectively through fixed intercommunication between passage and the two guide frames, the surface of catalyst storage box is equipped with the feed inlet.

Through the design of the technical scheme, the reduction reaction of NOX gas generated in the combustion process can be effectively realized, so that the effect of reducing the content of NOX in the flue gas is more effectively achieved.

As a further design of the utility model, a shaft lever is fixedly connected inside the guide frame along the horizontal longitudinal direction, a roller which is close to the material guide pipe is rotatably connected to the surface of the shaft lever, and a gap is reserved between the outer side of the roller and the inner wall of the material guide pipe.

Through the design of the technical scheme, the shielding effect of the material guide pipe of the catalyst storage box can be realized, so that when the coke oven is not used, titanium dioxide powder in the catalyst storage box can not easily fall into the guide frame, and a large amount of powder is prevented from falling into the guide frame when the coke oven is not used.

As a further design of the utility model, a plurality of grooves are formed on the outer side of the material guide pipe in a penetrating manner along the horizontal longitudinal direction.

Through the design of the technical scheme, the roller can rotate under the condition of contacting with flowing air flow, so that the corresponding catalyst in the catalyst storage box falls into the guide frame to be in contact reaction with related gas.

As a further design of the utility model, a first concrete bump is annularly arranged on the outer side of the coke oven, and supporting columns which are in contact with the first concrete bump are arranged on the surfaces of the two guide frames.

Through the design of the technical scheme, the supporting effect on the guide frame can be effectively realized.

As a further design of the utility model, a second concrete bump is arranged on the surface of the coke oven and at a position close to the outer side of the flue gas through opening, and a silica gel ring tightly attached to the end part of the guide pipe is arranged on the surface of the second concrete bump.

Through the design of the technical scheme, the sealing performance between the guide pipe and the flue gas through opening is more ideal, and gas leakage caused by gaps between the guide pipe and the flue gas through opening is prevented.

As a further design of the utility model, a cover plate is clamped outside a feed inlet arranged on the catalyst storage box, and a bulge is arranged at the top of the cover plate.

Through the design of the technical scheme, the sealing effect on the feed inlet can be realized, and external impurities are prevented from entering the catalyst storage box.

As a further design of the utility model, the bottom of the inner wall of the catalyst storage tank is designed in an inclined shape.

Through the design of the technical scheme, partial titanium dioxide powder can be prevented from remaining in the catalyst storage box.

According to the further design of the utility model, an opening is formed in one side of the catalyst storage box in a penetrating mode, and a transparent glass plate is arranged in the catalyst storage box through the opening.

Through the design of the technical scheme, the titanium dioxide in the catalyst storage box can be observed in a component manner by a worker.

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

1. according to the utility model, through the design of the baffle, the two guide frames and the plurality of flue gas through holes, the effect of limiting and guiding the flue gas generated in the coke oven utilization process can be effectively realized, so that the corresponding gas and the flue gas are mixed by the oxygen conveyer belt and the ammonia conveyer belt, the roller rotates under the pressure of flowing gas flow, the corresponding catalyst powder in the catalyst storage box floats into the guide frames, and is mixed with the corresponding gas to realize full reduction reaction, the nitrogen oxide gas in the flue gas is effectively reduced, and the nitrogen oxide is effectively treated and discharged outwards.

2. According to the utility model, through the structural design of the first concrete bump, the supporting effect on the guide frame and the catalyst storage box can be effectively realized, the situation that the first concrete bump and the catalyst storage box are supported by the flue gas through hole and are easy to damage is prevented, through the structural design of the second concrete bump and the silica gel ring, the tightness between the guide pipe and the flue gas through hole is better, and the flue gas which is not fully reacted and treated due to the gap is prevented from leaking outwards.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic structural diagram of the shape of the roller of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a coke oven; 2. a stopper; 3. a guide frame; 4. a connecting rod; 5. a fixing plate; 6. an ammonia gas conveyer belt; 7. an oxygen conveyer belt; 8. a support pillar; 9. a first concrete bump; 10. a connecting plate; 11. a conduit; 12. a smoke passage; 13. a shaft lever; 14. a roller; 15. a groove; 16. a catalyst storage tank; 17. a material guide pipe; 18. a feed inlet; 19. a cover plate; 20. a protrusion; 21. a glass plate; 22. a second concrete bump; 23. and (5) a silica gel ring.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments of the utility model. It should be understood, however, that these physical details should not be construed as limiting the utility model. That is, in some embodiments of the utility model, such physical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-3, the device for reducing the NOX content in the coke oven flue gas of the present invention comprises a coke oven 1, two guide frames 3 and a catalyst storage box 16, wherein a stopper 2 is integrally formed on the inner side of the coke oven 1, a plurality of flue gas through holes 12 are fixedly communicated with the outer side of the coke oven 1, the two guide frames 3 are respectively located on two sides of the coke oven 1, two connecting rods 4 are fixedly connected with the outer side of the guide frames 3, fixing plates 5 are arranged at the end portions of the connecting rods 4, the fixing plates 5 are connected with nuts by a plurality of bolts, connecting plates 10 are fixedly communicated with the two end portions of the guide frames 3, a guide tube 11 sleeved on the outer side of the flue gas through hole 12 is arranged on one side of the connecting plate 10, an ammonia gas conveyer belt 6 and an oxygen gas conveyer belt 7 are arranged on the outer side of the guide frames 3, the two catalyst storage boxes 16 are respectively fixedly communicated with the two guide frames 3 by a guide tube 17, a feed inlet 18 is arranged on the surface of the catalyst storage box 16, the inside packing of catalyst storage box 16 has sulfur dioxide powder, through the design of above-mentioned technical scheme, can effectively realize realizing reduction reaction to produced NOX gas among the combustion process to more effectual effect that reduces NOX content in the flue gas that reaches.

Referring to fig. 1-3, a shaft rod 13 is fixedly connected inside the guide frame 3 along the horizontal longitudinal direction, a roller 14 close to the material guide pipe 17 is rotatably connected to the surface of the shaft rod 13, a gap is left between the outer side of the roller 14 and the inner wall of the material guide pipe 17, a plurality of grooves 15 are formed on the outer side of the material guide pipe 17 along the horizontal longitudinal direction, and by means of the above technical scheme design, the shielding effect of the material guide pipe 17 of the catalyst storage tank 16 can be realized, so that when the coke oven 1 is not used, the titanium dioxide powder in the catalyst storage tank 16 cannot easily fall into the guide frame 3, preventing a large amount of powder from falling into the guide frame 3 when not in use, and is more favorable for the roller 14 to rotate under the condition of contacting with flowing air flow, so that the corresponding catalyst in the catalyst storage box 16 falls into the guide frame 3 to contact and react with the relevant gas.

Referring to fig. 1-5, the first concrete bump 9 is annularly disposed on the outer side of the coke oven 1, the support pillars 8 contacting with the first concrete bump 9 are disposed on the surfaces of the two guide frames 3, the second concrete bump 22 is disposed on the surface of the coke oven 1 and at a position close to the outer side of the flue gas through opening 12, and the silicone ring 23 tightly attached to the end of the guide tube 11 is disposed on the surface of the second concrete bump 22.

Referring to fig. 1-3, a cover plate 19 is fastened to the outer side of a feed port 18 formed in a catalyst storage tank 16, a protrusion 20 is formed at the top of the cover plate 19, the bottom of the inner wall of the catalyst storage tank 16 is designed to be inclined, an opening is formed in one side of the catalyst storage tank 16 in a penetrating manner, and a transparent glass plate 21 is formed in the catalyst storage tank 16 through the opening.

When the utility model is used, workers can utilize the coke oven 1, if a large amount of NOX gas is generated in the utilization process, the generated gas can effectively contact with corresponding air introduced through the ammonia conveyer belt 6 and the oxygen conveyer belt 7 when the generated gas flows upwards through the coke oven 1, the air flow in the flowing process is contacted with the rollers 14 and rotates the rollers, titanium dioxide powder in the catalyst storage box 16 leaks into the guide frame 3 in the rotating process, and the titanium dioxide powder and the NOX (nitrogen oxide) gas rapidly undergo a reduction reaction in an environment with sufficient oxygen and ammonia gas to generate nitrogen, and finally the nitrogen generated after the reduction reaction is discharged outwards through the air flow in the coke oven 1.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The device for reducing the content of NOX in the smoke of the coke oven comprises the coke oven (1), two guide frames (3) and a catalyst storage box (16), and is characterized in that:

a stop block (2) is integrally formed on the inner side of the coke oven (1), and a plurality of flue gas through holes (12) are fixedly communicated with the outer side of the coke oven (1);

the two guide frames (3) are respectively positioned at two sides of the coke oven (1), two connecting rods (4) are fixedly connected to the outer sides of the guide frames (3), fixing plates (5) are arranged at the end parts of the connecting rods (4), a plurality of fixing plates (5) are connected with nuts through a plurality of bolts, connecting plates (10) are fixedly communicated with the two end parts of the guide frames (3), a guide pipe (11) sleeved on the outer side of the flue gas through hole (12) is arranged on one side of each connecting plate (10), and an ammonia gas conveying belt (6) and an oxygen gas conveying belt (7) are arranged on the outer sides of the guide frames (3);

the two catalyst storage tanks (16) are respectively and fixedly communicated with the two guide frames (3) through material guide pipes (17), and the surfaces of the catalyst storage tanks (16) are provided with feed inlets (18).

2. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: the inner part of the guide frame (3) is fixedly connected with a shaft rod (13) along the horizontal longitudinal direction, the surface of the shaft rod (13) is rotatably connected with a roller (14) which is close to the material guide pipe (17), and a gap is reserved between the outer side of the roller (14) and the inner wall of the material guide pipe (17).

3. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: the outer side of the material guide pipe (17) is provided with a plurality of grooves (15) in a penetrating mode along the horizontal longitudinal direction.

4. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: the outer side of the coke oven (1) is annularly provided with a first concrete bump (9), and the surfaces of the two guide frames (3) are respectively provided with a support column (8) which is in contact with the first concrete bump (9).

5. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: and a second concrete bump (22) is arranged on the surface of the coke oven (1) and at a position close to the outer side of the flue gas through hole (12), and a silica gel ring (23) tightly attached to the end part of the guide pipe (11) is arranged on the surface of the second concrete bump (22).

6. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: a cover plate (19) is clamped at the outer side of a feeding hole (18) formed in the catalyst storage box (16), and a protrusion (20) is arranged at the top of the cover plate (19).

7. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: the bottom of the inner wall of the catalyst storage tank (16) is designed in an inclined shape.

8. The device for reducing the content of NOX in the coke oven flue gas as claimed in claim 1, wherein: an opening is formed in one side of the catalyst storage box (16) in a penetrating mode, and a transparent glass plate (21) is arranged in the catalyst storage box (16) through the opening.