CN215276645U

CN215276645U - SCR reactor structure arranged in vertical shaft flue of membrane water wall

Info

Publication number: CN215276645U
Application number: CN202023156199.7U
Authority: CN
Inventors: 谢国庆; 沈广灿; 钱斐; 周信云; 何巍; 冯高通
Original assignee: Xi'an Datang Electric Power Design And Research Institute Co ltd
Current assignee: Xi'an Datang Electric Power Design And Research Institute Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-12-24
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a coal power generation field specifically is an arrange SCR reactor structure in membrane wall shaft flue, and it effectively reduces the transformation cost, satisfies the denitration requirement, and it includes the membrane wall shaft flue that the membrane wall formed, its characterized in that, membrane wall inner wall is fixed with the bracket, catalyst braced frame has been placed on the bracket, catalyst braced frame one side the membrane wall is provided with lets the pipe region, let the pipe region be provided with catalyst installation door, catalyst installation door department is provided with the return bend of stepping down and steps down the return bend down, go up the return bend with through collection case and connecting pipe intercommunication between the return bend down.

Description

SCR reactor structure arranged in vertical shaft flue of membrane water wall

Technical Field

The utility model relates to a coal power generation field specifically is an arrange SCR reactor structure in membrane wall shaft flue.

Background

The SCR reactor is the core equipment of a flue gas denitration system, and the main function of the SCR reactor is to bear a catalyst, provide space for denitration reaction, ensure smooth flow of flue gas and uniform distribution of air flow, and create conditions for smooth denitration reaction.

The traditional shaft type SCR reactor mainly comprises a reactor body, a reactor support and the like. The reactor body is mainly a four-side large flat steel shell structure, the outside of the steel shell is reinforced by profile steel, the inside of the body is used for placing a catalyst module, the upper part and the lower part of the body are connected with a flue, and flue gas vertically penetrates through the reactor from the upper part (or from the lower part); the reactor support is located the reactor body lower part for support catalyst module and reactor body, and the support generally need stretch out several roof beams and be connected with the steelframe. Flue gas is taken out from the boiler in traditional SCR denitration, independently constructs the flue, and steelframe and SCR reactor just can carry out the flue gas and take off the round pin, reforms transform with high costsly.

Disclosure of Invention

In order to solve the problem that the existing flue gas is out of stock and transformed with high cost, the utility model provides a arrange the SCR reactor structure in membrane wall shaft flue, its effective reduction transformation cost satisfies the denitration requirement.

The technical scheme is as follows: the utility model provides a arrange SCR reactor structure in membrane wall shaft flue, its membrane wall shaft flue that includes membrane wall, its characterized in that, membrane wall inner wall is fixed with the bracket, catalyst braced frame has been placed on the bracket, catalyst braced frame one side the membrane wall is provided with lets the tube region, let the tube region be provided with catalyst erection door, catalyst erection door department is provided with the return bend of stepping down and steps down the return bend, on step down the return bend with let down through collection case and connecting pipe intercommunication between the return bend.

The membrane water-cooling wall is further characterized in that the bracket is fixedly welded with flat steel on the inner wall of the membrane water-cooling wall;

the catalyst supporting frame is made of section steel through welding;

a limiting block matched with the catalyst supporting frame is welded on the bracket;

and a sealing steel plate is arranged in a gap between the catalyst mounting door and the membrane water wall.

Adopt the utility model discloses afterwards, vacate the membrane wall shaft flue of take the altitude, arrange the SCR reactor in this membrane wall flue, can directly accomplish the denitration at membrane shaft flue, for traditional SCR denitration the round pin need not pull out the flue alone and arrange, need not make steel-shelled frame-type reactor, practiced thrift cost and place greatly.

Drawings

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

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;

fig. 5 is a schematic view of fig. 3 from direction E.

Detailed Description

See as shown in fig. 1-5, an arrange SCR reactor structure in membrane wall shaft flue, it includes the membrane wall shaft flue that membrane wall 1 formed, 1 inner walls of membrane wall are fixed with bracket 2, catalyst braced frame 3 has been placed on bracket 2, catalyst braced frame 3 is made by the shaped steel welding, the membrane wall of catalyst braced frame 3 one side is provided with lets the pipe region, let the pipe region be provided with catalyst installation door 5, catalyst installation door 5 department is provided with the return bend of stepping down and steps down the return bend, on step down the return bend 10 and under step down through collection case 8 and connecting pipe 9 intercommunication between the return bend 11.

And the bracket 2 is welded and fixed with the flat steel on the inner wall of the membrane water-cooled wall 1.

The welding has the stopper 6 with catalyst braced frame 3 complex on the bracket 2, does not weld between braced frame 3 and the bracket 2, blocks the location with stopper 6, and stopper 6 only welds with bracket 2, and the department of contact with braced frame 3 does not weld, and the relative expansion between braced frame 3 and the bracket 2 must be considered in the mounted position of stopper 6, must not be died. The stopper 6 is made of a steel plate.

And a sealing steel plate 7 is arranged in a gap between the catalyst mounting door 5 and the membrane water wall 1.

And opening the catalyst mounting door 5, plugging the catalyst module 4 and placing the catalyst module on the catalyst support frame 3, and covering a door cover of the catalyst mounting door after the catalyst module is mounted, so that the SCR reactor is mounted.

Claims

1. The utility model provides a arrange SCR reactor structure in membrane wall shaft flue, its membrane wall shaft flue that includes membrane wall, its characterized in that, membrane wall inner wall is fixed with the bracket, catalyst braced frame has been placed on the bracket, catalyst braced frame one side the membrane wall is provided with lets the tube region, let the tube region be provided with catalyst erection door, catalyst erection door department is provided with the return bend of stepping down and steps down the return bend, on step down the return bend with let down through collection case and connecting pipe intercommunication between the return bend.

2. An SCR reactor structure as claimed in claim 1 in which the brackets are welded to the flat steel of the inner wall of the membrane wall.

3. An SCR reactor structure as claimed in claim 1 arranged in a membrane wall shaft flue, wherein the catalyst support frame is made of steel sections welded together.

4. An SCR reactor structure as claimed in claim 1, wherein the bracket is welded with a stop cooperating with the catalyst support frame.

5. An SCR reactor structure as claimed in claim 1 arranged in a membrane wall shaft flue, wherein the gap between the catalyst mounting door and the membrane wall is provided with a sealing steel plate.