CN216677736U

CN216677736U - SCR catalytic reaction system

Info

Publication number: CN216677736U
Application number: CN202123032757.3U
Authority: CN
Inventors: 王文喜; 代能柒; 朱如祥; 沈飞
Original assignee: Anhui Huaining Conch Cement Co Ltd
Current assignee: Anhui Huaining Conch Cement Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-07
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the technical field of denitration devices, in particular to an SCR catalytic reaction system. The technical scheme comprises the following steps: shell, sealed shell, first bearing, second bearing and outlet duct, shell upper end outer wall one side has been seted up into the mouth, the first bearing is installed in the equal embedding of both sides about advancing the mouth inner wall, the pivot is installed in the inside rotation of first bearing, the blade that circular array distributes is installed to the inside outer wall of pivot, sealed shell is installed to shell upper end outer wall one side, the second bearing is installed in the embedding of sealed shell inner wall lower extreme one side, the impeller is installed in the inside rotation of second bearing, the impeller runs through second bearing one end outer wall and is connected with the pivot, through setting up blade, sealed shell and impeller, has reached the effect that improves the quality of coming out, has improved the mixing homogeneity of flue gas and ammonia, has guaranteed the reaction effect of ammonia to the flue gas to improve the effect of coming out of flue gas, can be fine satisfy the flue gas processing requirement.

Description

SCR catalytic reaction system

Technical Field

The utility model relates to the technical field of denitration devices, in particular to an SCR catalytic reaction system.

Background

The SCR is a flue gas denitration device, the SCR denitration technology is one of the most mature and most applied high-efficiency denitration technologies in the world at present, is widely applied to treatment projects of flue gas of coal-fired boilers and various industrial furnaces, is widely and mature applied to the thermal power industry in China, and is the most important technology for meeting the requirement of ultra-low emission of nitrogen oxides.

Through the magnanimity retrieval, discover that catalytic reaction unit among the prior art is typical like a SCR denitrification facility that publication number is CN209735340U discloses, it includes device main part, advances cigarette mouth, water storage area, storage tank room and outlet flue, the inside bottom mounting of device main part has the water storage area, and the device main part internally mounted of water storage area top has the water purification layer, install the storage tank room on the outer wall of device main part one side, the internally mounted of storage tank room has the ammonia storage tank, the storage tank room internally mounted of ammonia storage tank one side has the gas mixing pipe, the liquid ammonia flow tube is installed to the output of gas mixing pipe, and the one end of liquid ammonia flow tube extends to the outside of storage tank room and installs the pneumatic pump, the output of flow valve has the ammonia injection pipe through the pipe mounting, install control panel on the outer wall of device main part. The utility model not only realizes the high-efficiency denitration of the SCR denitration device and the reasonability of the emission of liquid ammonia gas of the SCR denitration device, but also realizes the sewage purification treatment of the SCR denitration device.

The denitration device among the prior art only dashes into the flue gas inside, can not guarantee flue gas and ammonia homogeneous mixing usually, influences the reaction effect of ammonia to the flue gas to lead to the denitration effect of flue gas relatively poor, can not be fine satisfy the flue gas and handle the requirement.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an SCR catalytic reaction system to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a SCR catalytic reaction system, includes shell, sealed shell, first bearing, second bearing and outlet duct, shell upper end outer wall one side has been seted up into the mouth, the first bearing is installed in the equal embedding of both sides about advancing the mouth inner wall, the pivot is installed to the inside rotation of first bearing, the blade that circular array distributes is installed to the inside outer wall of pivot, sealed shell is installed to shell upper end outer wall one side, sealed shell inner wall lower extreme one side embedding is installed the second bearing.

Preferably, the lower end of the outer wall on one side of the shell is provided with an air outlet, and the inside of the shell is provided with catalyst layers distributed in parallel at equal intervals. The mixed gas of the flue gas and the ammonia gas is discharged through the gas outlet after reacting in the catalyst layer.

Preferably, the blade is located into the mouth of cigarette inside, both ends outer wall all laminates and is fixed with the scraper blade about the blade, scraper blade one side outer wall contacts with the mouth of cigarette inner wall. The scraper blade has reached the inside purpose of clearance inlet flue, avoids the inside dust of flue gas to block up inlet flue and first intake pipe.

Preferably, an impeller is rotatably mounted in the second bearing and penetrates through the outer wall of one end of the second bearing to be connected with the rotating shaft. When ammonia gas flows in the sealing shell, the impeller is driven to rotate in the second bearing.

Preferably, the first air inlet pipe is installed on one side of the upper end of the inner wall of the smoke inlet in an inserting mode and is distributed in parallel at equal intervals, and the first air inlet pipe is communicated with the inside of the smoke inlet.

Preferably, the second intake pipe is installed in the grafting of sealed shell one side outer wall, sealed shell deviates from the grafting of second intake pipe one side outer wall and installs the outlet duct, the shunt tubes is installed in the grafting of outlet duct one end outer wall, the shunt tubes is linked together with first intake pipe. The ammonia gets into inside the sealed shell through the second intake pipe, and the inside ammonia of sealed shell gets into inside the first intake pipe through outlet duct and shunt tubes.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the blades, the sealing shell and the impeller are arranged, so that the effect of improving the denitration quality is achieved, flue gas enters the shell through the smoke inlet, ammonia gas enters the sealing shell through the second air inlet pipe and drives the impeller and the rotating shaft to rotate, the ammonia gas in the sealing shell enters the smoke inlet through the air outlet pipe, the flow dividing pipe and the first air inlet pipe and is mixed with the flue gas, the blades and the scraper plate rotate in the smoke inlet to drive air to flow, so that the mixing uniformity of the flue gas and the ammonia gas is improved, the reaction effect of the ammonia gas on the flue gas is ensured, the denitration effect of the flue gas is improved, and the flue gas treatment requirement can be well met.

Drawings

FIG. 1 is a schematic cross-sectional view of the housing structure of the present invention;

FIG. 2 is an enlarged view of the smoke inlet structure of the present invention;

FIG. 3 is a schematic top view of a portion of the housing structure of the present invention;

fig. 4 is an enlarged schematic view of the sealing case structure of the present invention.

In the figure: 1. a housing; 11. an air outlet; 12. a catalyst layer; 13. a smoke inlet; 14. a first bearing; 15. a rotating shaft; 16. a blade; 17. a squeegee; 18. a first intake pipe; 2. sealing the shell; 21. a second bearing; 22. an impeller; 23. a second intake pipe; 24. an air outlet pipe; 25. and (4) dividing the tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the present invention provides two embodiments:

the first embodiment is as follows: the utility model provides a SCR catalytic reaction system, including shell 1, sealed shell 2, first bearing 14, second bearing 21 and outlet duct 24, inlet 13 has been seted up to 1 upper end outer wall one side of shell, inlet 13 inner wall both sides are all embedded and are installed first bearing 14 about the inlet, first bearing 14 internally rotate installs pivot 15, the blade 16 that circular array distributes is installed to the inside outer wall of pivot 15, sealed shell 2 is installed to 1 upper end outer wall one side of shell, sealed shell 2 inner wall lower extreme one side embedding is installed second bearing 21.

The lower end of the outer wall of one side of the shell 1 is provided with an air outlet 11, and a catalyst layer 12 which is distributed in parallel at equal intervals is arranged inside the shell 1. The mixed gas of the flue gas and the ammonia gas is discharged through the gas outlet 11 after reacting in the catalyst layer 12.

The first air inlet pipes 18 which are equidistantly and parallelly distributed are inserted and installed on one side of the upper end of the inner wall of the smoke inlet 13, and the first air inlet pipes 18 are communicated with the interior of the smoke inlet 13.

The second air inlet pipe 23 is installed in the grafting of sealed shell 2 one side outer wall, and sealed shell 2 deviates from the grafting of second air inlet pipe 23 one side outer wall and installs outlet duct 24, and shunt tubes 25 are installed in the grafting of 24 one end outer walls of outlet duct, and shunt tubes 25 are linked together with first air inlet pipe 18. Ammonia gas enters the inside of the sealed case 2 through the second gas inlet pipe 23, and ammonia gas inside the sealed case 2 enters the inside of the first gas inlet pipe 18 through the gas outlet pipe 24 and the shunt pipe 25.

Example two: the utility model provides a SCR catalytic reaction system, including shell 1, sealed shell 2, first bearing 14, second bearing 21 and outlet duct 24, inlet 13 has been seted up to 1 upper end outer wall one side of shell, inlet 13 inner wall both sides are all embedded and are installed first bearing 14 about the inlet, first bearing 14 internally rotate installs pivot 15, the blade 16 that circular array distributes is installed to the inside outer wall of pivot 15, sealed shell 2 is installed to 1 upper end outer wall one side of shell, sealed shell 2 inner wall lower extreme one side embedding is installed second bearing 21.

The blade 16 is located inside the smoke inlet 13, the outer walls of the upper end and the lower end of the blade 16 are both attached and fixed with a scraper 17, and the outer wall of one side of the scraper 17 is in contact with the inner wall of the smoke inlet 13. The scraper 17 achieves the purpose of cleaning the interior of the smoke inlet 13, and dust in the smoke is prevented from blocking the smoke inlet 13 and the first air inlet pipe 18.

An impeller 22 is rotatably mounted in the second bearing 21, and the impeller 22 penetrates through the outer wall of one end of the second bearing 21 and is connected with the rotating shaft 15. When flowing inside the sealed casing 2, the ammonia gas drives the impeller 22 to rotate inside the second bearing 21.

The second air inlet pipe 23 is installed on the outer wall of one side of the sealing shell 2 in an inserting mode, the air outlet pipe 24 is installed on the outer wall of one side, away from the second air inlet pipe 23, of the sealing shell 2 in an inserting mode, the shunt pipe 25 is installed on the outer wall of one end of the air outlet pipe 24 in an inserting mode, and the shunt pipe 25 is communicated with the first air inlet pipe 18. The ammonia gets into inside the sealed shell 2 through second intake pipe 23, and inside the inside ammonia of sealed shell 2 passes through outlet duct 24 and shunt tubes 25 and gets into inside first intake pipe 18, the flue gas gets into inside shell 1 through advancing mouth 13, and the ammonia gets into inside the sealed shell 2 through second intake pipe 23, and drive impeller 22 and pivot 15 rotation, the inside ammonia of sealed shell 2 passes through outlet duct 24, shunt tubes 25 and first intake pipe 18 get into inside mouth 13, and mix with the flue gas, blade 16 and scraper blade 17 are advancing the inside rotation of mouth 13, it flows to drive the air, thereby the mixing uniformity of flue gas and ammonia has been improved, the reaction of ammonia to the flue gas has been guaranteed, thereby the out-of-stock effect of flue gas has been improved, can be fine satisfy the flue gas treatment requirement.

The working principle is as follows: inside the flue gas got into shell 1 through advancing mouth 13, and the ammonia got into sealed shell 2 through second intake pipe 23 inside, and drive impeller 22 and pivot 15 and rotate, the inside ammonia of sealed shell 2 gets into inside mouth 13 through outlet duct 24, shunt tubes 25 and first intake pipe 18, and mixes with the flue gas, blade 16 and scraper blade 17 rotate in mouth 13 is inside, drive the air flow, thereby the mixing uniformity of flue gas and ammonia has been improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a SCR catalytic reaction system, includes shell (1), sealed shell (2), first bearing (14), second bearing (21) and outlet duct (24), its characterized in that: the utility model discloses a cigarette making machine, including shell (1), first bearing (14) are installed in the equal embedding in both sides about advancing cigarette mouth (13) inner wall, first bearing (14) internal rotation installs pivot (15), blade (16) that circular array distributes are installed to pivot (15) inside outer wall, sealed shell (2) are installed to shell (1) upper end outer wall one side, second bearing (21) are installed in the embedding of sealed shell (2) inner wall lower extreme one side.

2. An SCR catalytic reaction system according to claim 1, wherein: the gas outlet (11) have been seted up to shell (1) one side outer wall lower extreme, shell (1) inside is provided with equidistance parallel distribution's catalyst layer (12).

3. An SCR catalytic reaction system according to claim 1, wherein: blade (16) are located into smoke mouth (13) inside, both ends outer wall all laminates and is fixed with scraper blade (17) about blade (16), scraper blade (17) one side outer wall contacts with smoke mouth (13) inner wall.

4. An SCR catalytic reaction system according to claim 1, wherein: an impeller (22) is rotatably arranged in the second bearing (21), and the impeller (22) penetrates through the outer wall of one end of the second bearing (21) and is connected with the rotating shaft (15).

5. An SCR catalytic reaction system according to claim 1, wherein: advance cigarette mouth (13) inner wall upper end one side and peg graft and install equidistance parallel distribution's first intake pipe (18), and first intake pipe (18) and advance cigarette mouth (13) inside and be linked together.

6. An SCR catalytic reaction system according to claim 1, wherein: sealed shell (2) one side outer wall is pegged graft and is installed second intake pipe (23), sealed shell (2) deviates from that second intake pipe (23) one side outer wall is pegged graft and is installed outlet duct (24), shunt tubes (25) are installed in the grafting of outlet duct (24) one end outer wall, shunt tubes (25) are linked together with first intake pipe (18).