CN216726656U

CN216726656U - Ash removal device for SCR denitration reactor

Info

Publication number: CN216726656U
Application number: CN202123379735.4U
Authority: CN
Inventors: 王俊升
Original assignee: Guangdong Weilin Environmental Protection Technology Co ltd
Current assignee: Guangdong Weilin Environmental Protection Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-14
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the field of SCR denitration devices, in particular to an ash removal device for an SCR denitration reactor; the reactor comprises an air inlet pipe, wherein the air inlet pipe is connected with a reactor main body, a partition plate is arranged in an inner cavity of the reactor main body, the partition plate divides the reactor main body into an air inlet cavity and a catalyst cavity which are communicated with the air inlet pipe, and the catalyst cavity is connected with an air outlet pipe; a catalyst which is abutted against the lower end face of the partition plate and has a honeycomb structure is arranged in the catalyst cavity, and honeycomb holes for air flow to pass through are formed in the catalyst; be equipped with the first through-hole with honeycomb holes one-to-one on the baffle, still be equipped with steam in the intake chamber and sweep the device. The steam purging device provided by the utility model can better clear away dust on the surface of the catalyst, wherein the partition plate can prevent the dust from falling on the surface of the catalyst, so that the problem that the honeycomb holes are difficult to clear due to the fact that the steam purging device blows the dust into the honeycomb holes is solved, and the steam purging device can be widely applied to the field of SCR denitration devices.

Description

Ash removal device for SCR denitration reactor

Technical Field

The utility model relates to the field of SCR denitration devices, in particular to an ash removal device for an SCR denitration reactor.

Background

Industrial waste gas often contains a large amount of nitrogen oxides, and the direct discharge of the nitrogen oxides into the air can cause atmospheric pollution; in the prior art, an SCR denitration technique is often used to treat nitrogen oxides, and the SCR denitration technique refers to a process in which exhaust gas reacts with NOx in the exhaust gas at a certain temperature range by using reducing gas NH3 under the action of a solid catalyst to generate nitrogen and water.

People often arrange the catalyst into a honeycomb shape to improve the catalytic effect of the catalyst, and ash in the exhaust gas can block the pore channels of the catalyst in the using process to influence the catalytic efficiency of the catalyst; therefore, people often use the steam purging device to purge ash, a large amount of ash is accumulated on the upper surface of the catalyst, the steam purging device is directly used for purging, the ash on the upper surface of the catalyst enters a catalyst pore channel, pore channel blockage is aggravated, and difficulty in subsequent cleaning of the pore channel is increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems that in the prior art, the catalyst is usually arranged into a honeycomb shape, and when a steam soot blower is used for cleaning the soot on the surface of the catalyst, the soot on the upper surface of the catalyst falls into honeycomb holes of the catalyst, the blockage of the pore channels is aggravated, and the difficulty in subsequent cleaning of the honeycomb holes is increased; the utility model provides an ash removal device for an SCR denitration reactor, which is provided with a steam blowing device to better remove dust on the surface of a catalyst, wherein a partition plate is arranged to prevent the dust from falling on the surface of the catalyst, so that the problem that the difficulty in cleaning honeycomb holes is increased due to the fact that the steam blowing device blows the dust into the honeycomb holes is solved.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

a dust cleaning device for an SCR denitration reactor comprises an air inlet pipe, wherein the air inlet pipe is connected with a reactor main body, a partition plate is arranged in an inner cavity of the reactor main body and divides the reactor main body into an air inlet cavity and a catalyst cavity which are communicated with the air inlet pipe, and the catalyst cavity is connected with an air outlet pipe; a catalyst which is abutted against the lower end face of the partition plate and has a honeycomb structure is arranged in the catalyst cavity, and honeycomb holes for air flow to pass through are formed in the catalyst; be equipped with the first through-hole with honeycomb holes one-to-one on the baffle, still be equipped with steam in the intake chamber and sweep the device.

The steam purging device provided by the utility model can better clean the catalyst, and the partition plate can prevent dust from falling into the honeycomb holes of the catalyst, so that the condition that the honeycomb holes are blocked and aggravated due to the fact that the dust falls into the honeycomb holes is avoided.

Preferably, the inside gliding slide that is equipped with of baffle is equipped with the second through-hole that can with first through-hole one-to-one on the slide, and the slide can slide to second through-hole intercommunication honeycomb holes and first through-hole department.

According to the utility model, the position of the second through hole is adjusted through the movement of the sliding plate, so that the connection between the first through hole and the honeycomb holes is controlled.

Preferably, an open slot is formed in the side wall of the partition plate, a cover plate is arranged at the opening of the open slot, the sliding plate is arranged in the open slot, a pushing mechanism for pushing the sliding plate to move so as to enable the second through hole to be staggered with the first through hole is arranged in the open slot, the pushing mechanism comprises a driving motor arranged in the open slot, the driving motor is connected with a hydraulic push rod, and one end of the hydraulic push rod is connected with the sliding plate.

The open slot of the present invention preferably allows for the installation of a skateboard, wherein the hydraulic push rod within the open slot preferably controls the movement of the skateboard.

Preferably, the bottom wall of the open slot is provided with a return spring axially arranged along the sliding direction of the sliding plate, one end of the return spring is connected with a return plate, and the return plate is abutted against the side wall of the sliding plate under the action of the return spring.

The return spring and the return plate arranged in the utility model preferably realize the return of the sliding plate.

Preferably, the side wall of the reactor main body is provided with a first ash discharge pipe communicated with the air inlet cavity.

The steam purging device can discharge the ash on the upper end surface of the partition plate out of the reactor main body through the first ash discharge hole.

Preferably, the side wall of the reactor main body is provided with a second ash discharge pipe communicated with the catalyst cavity.

The steam purging device can discharge ash in the honeycomb holes out of the reactor main body through the second ash discharge hole.

Drawings

FIG. 1 is a sectional view of a soot cleaning device for an SCR denitration reactor in example 1;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is a schematic structural view of a separator in example 1.

The names of the parts designated by the numerical references in the drawings are as follows:

101. an air inlet pipe; 102. a reactor body; 104. An air inlet cavity; 105. a catalyst chamber; 106. an air outlet pipe; 107. a catalyst; 108. honeycomb holes; 109. a steam purging device; 110. a first ash discharge pipe; 111. a second ash discharge pipe; 201. A partition plate; 202. a first through hole; 203. a slide plate; 204. a second through hole; 205. a cover plate; 206. a drive motor; 207. a hydraulic push rod; 208. a reset plate; 209. a return spring; 301. an open slot.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the utility model and not limiting.

Example 1

As shown in fig. 1 to 3, the present embodiment provides an ash removal device for an SCR denitration reactor, which includes an air inlet pipe 101, the air inlet pipe 101 is connected to a reactor main body 101, a partition plate 201 is disposed in an inner cavity of the reactor main body 101, the partition plate 201 partitions the reactor main body 101 into an air inlet cavity 104 and a catalyst cavity 105 communicated with the air inlet pipe 101, and the catalyst cavity 105 is connected to an air outlet pipe 106; a catalyst 107 which is abutted against the lower end face of the partition plate 201 and has a honeycomb structure is arranged in the catalyst cavity 105, and honeycomb holes 108 through which air flows pass are formed in the catalyst 107; the partition 201 is provided with first through holes 202 corresponding to the honeycomb holes 108 one by one, and the air inlet cavity 104 is also provided with a steam purging device 109. A first ash discharge pipe 110 communicated with the air inlet cavity 104 is arranged on the side wall of the reactor main body 101; the side wall of the reactor main body 101 is provided with a second ash discharge pipe 111 communicated with the catalyst cavity 105.

A sliding plate 203 capable of sliding is arranged in the partition plate 201, second through holes 204 capable of corresponding to the first through holes 202 one by one are arranged on the sliding plate 203, and the sliding plate 203 can slide to the positions where the second through holes 204 communicate the honeycomb holes 108 with the first through holes 202; an open groove 301 is formed in the side wall of the partition board 201, a cover plate 205 is arranged at an opening of the open groove 301, the sliding plate 203 is arranged in the open groove 301, a pushing mechanism for pushing the sliding plate 203 to move so that the second through hole 204 and the first through hole 202 are staggered is arranged in the open groove 301, the pushing mechanism comprises a driving motor 206 arranged in the open groove 301, the driving motor 206 is connected with a hydraulic push rod 207, and one end of the hydraulic push rod 207 is connected with the sliding plate 203. A return spring 209 arranged axially along the sliding direction of the sliding plate 203 is installed on the bottom wall of the open slot 301, one end of the return spring 209 is connected with a return plate 208, and the return plate 208 is abutted against the side wall of the sliding plate 203 under the action of the return spring 209.

The ash removal device of the SCR denitration reactor in this embodiment is used according to the following principle: when the denitration reactor normally works, the first ash discharge pipe 110 and the second ash discharge pipe 111 are closed, waste gas enters the air inlet cavity 104 from the air inlet pipe 101, the sliding plate 203 moves under the action of the return spring 209, the second through holes 204 communicate the first through holes 202 of the honeycomb holes 108, and the waste gas enters the catalyst cavity 105 from the honeycomb holes 108 and is discharged from the ash discharge pipe; when the catalyst 107 needs to be cleaned, the air inlet pipe 101 and the air outlet pipe 106 are closed, the driving motor 206 is started to drive the sliding plate 203 to move, the second through hole 204 on the sliding plate 203 is staggered with the first through hole 202 on the partition plate 201, the first ash discharge pipe 110 is opened, the steam blowing device 109 is started to blow, and dust on the upper end surface of the partition plate 201 is discharged through the first ash discharge pipe 110; after the dust on the upper end surface of the partition board 201 is removed completely, the first dust exhaust pipe 110 and the driving motor 206 are closed, the second dust exhaust pipe 111 is opened, the sliding plate 203 resets under the action of the reset spring 209, the honeycomb holes 108 are communicated with the first through holes 202 through the second through holes 204, the steam purging device 109 is started to purge the honeycomb holes 108, and the dust in the honeycomb holes 108 is discharged through the second dust exhaust pipe 111.

The steam purging device 109 provided in this embodiment can preferably clean the catalyst 107, wherein the partition plate 201 can prevent dust from falling into the honeycomb holes 108 of the catalyst 107, so as to avoid the situation that the dust falls into the honeycomb holes 108 to cause the honeycomb holes 108 to be clogged and aggravated. The ash removing device in this embodiment adjusts the position of the second through hole 204 by controlling the movement of the sliding plate 203, thereby controlling the connection between the first through hole 202 and the honeycomb holes 108.

The arrangement of the opening groove 301 of the present embodiment preferably realizes the installation of the sliding plate 203, wherein the hydraulic push rod 207 arranged in the opening groove 301 preferably controls the movement of the sliding plate 203; wherein the return spring 209 and the return plate 208 preferably effect the return of the slide plate 203.

In this embodiment, the steam purging device 109 can discharge the ash on the upper end surface of the partition 201 out of the reactor main body 101 through the first ash discharge hole; steam purge apparatus 109 may expel ash within honeycomb cells 108 out of reactor body 101 through a second ash discharge hole.

In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides an ash removal device for SCR denitration reactor which characterized in that: the reactor comprises an air inlet pipe (101), wherein the air inlet pipe (101) is connected with a reactor main body (102), a partition plate (201) is arranged in an inner cavity of the reactor main body (102), the reactor main body (102) is divided into an air inlet cavity (104) and a catalyst cavity (105) which are communicated with the air inlet pipe (101) by the partition plate (201), and the catalyst cavity (105) is connected with an air outlet pipe (106); a catalyst (107) which is abutted against the lower end face of the partition plate (201) and has a honeycomb structure is arranged in the catalyst cavity (105), and honeycomb holes (108) for air flow to pass through are formed in the catalyst (107); the partition plate (201) is provided with first through holes (202) which correspond to the honeycomb holes (108) one by one, and the air inlet cavity (104) is also internally provided with a steam purging device (109).

2. The ash removal device for the SCR denitration reactor as claimed in claim 1, wherein: the inside slide (203) that can slide that is equipped with of baffle (201), be equipped with on slide (203) can with first through-hole (202) one-to-one second through-hole (204), slide (203) can slide to second through-hole (204) and communicate honeycomb holes (108) and first through-hole (202) department.

3. The ash removal device for the SCR denitration reactor as claimed in claim 2, wherein: the side wall of the partition board (201) is provided with an open slot (301), a cover plate (205) is arranged at an opening of the open slot (301), the sliding plate (203) is arranged in the open slot (301), a pushing mechanism which can push the sliding plate (203) to move to enable the second through hole (204) and the first through hole (202) to be staggered is arranged in the open slot (301), the pushing mechanism comprises a driving motor (206) arranged in the open slot (301), the driving motor (206) is connected with a hydraulic push rod (207), and one end of the hydraulic push rod (207) is connected with the sliding plate (203).

4. The ash removal device for the SCR denitration reactor as set forth in claim 3, wherein: the bottom wall of the open slot (301) is provided with a return spring (209) which is axially arranged along the sliding direction of the sliding plate (203), one end of the return spring (209) is connected with a return plate (208), and the return plate (208) is abutted against the side wall of the sliding plate (203) under the action of the return spring (209).

5. The ash removal device for the SCR denitration reactor as claimed in claim 1, wherein: the side wall of the reactor main body (102) is provided with a first ash discharge pipe (110) communicated with the air inlet cavity (104).

6. The ash removal device for the SCR denitration reactor as recited in claim 1, wherein: the side wall of the reactor main body (102) is provided with a second ash discharge pipe (111) communicated with the catalyst cavity (105).