CN210674773U

CN210674773U - Flue gas treatment system of waste incineration power plant

Info

Publication number: CN210674773U
Application number: CN201921615379.1U
Authority: CN
Inventors: 宋永俊; 骆毅力; 骆的; 杨大利
Original assignee: Heinuoer Yibin Environmental Protection Power Co ltd
Current assignee: Heinuoer Yibin Environmental Protection Power Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-05
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a flue gas treatment system of a waste incineration power plant, which comprises a tank body (1), the tank is characterized in that the top of the tank body (1) is provided with an outer pipe (2) which is vertically arranged, the top surface of the outer pipe (2) is provided with a plurality of threaded holes (3) along the circumferential direction, an inner pipe (4) which is axially arranged along the outer pipe (2) is arranged in the outer pipe, the bottom of the inner pipe (4) is welded with a filter screen C (5), the annular disc (6) is provided with a plurality of through holes (7) corresponding to the threaded holes (3), the annular disc (6) penetrates through the through holes (7) through screws (8) and is in threaded connection with the threaded holes (3), be provided with exhanst gas outlet (9) on the lateral wall of jar body (1), the pipe card of passing through of exhanst gas outlet (9) department is connected with flue gas pipeline (10), and the other end of flue gas pipeline (10) is connected with flue gas delivery pipe (11) through the pipe card. The utility model has the advantages that: compact structure, thorough sulfuric acid steam treatment, avoiding pipeline blockage and simple operation.

Description

Flue gas treatment system of waste incineration power plant

Technical Field

The utility model relates to a technical field that the flue gas was handled, especially a flue gas processing system of msw incineration power plant.

Background

In the waste incineration treatment process, in order to enable better combustion of low-calorific-value waste, the air entering a hearth of the waste incinerator is guaranteed to have certain temperature, the environment protection requirement is considered, the air can be sent into the waste incinerator for combustion supporting after being heated by the air preheater, and the air is heated by the waste heat of the flue gas adopted by the air preheater. Waste incinerator produces a large amount of flue gases when burning rubbish, smugglies a large amount of particle impurity and sulphuric acid steam secretly in the flue gas, consequently need carry out purification treatment to the flue gas when discharging the flue gas, but current treatment process mainly adopts the absorption tower to absorb the sulphuric acid steam in the flue gas, has the defect of handling not thorough, in addition, adopts the filter screen to intercept particle impurity, long-term in the past, adhere to a large amount of particle impurity on the filter screen, lead to the mesh to be sheltered from, can't pass through the flue gas smoothly, cause the pipe blockage, can't normally handle the flue gas. Therefore, a flue gas treatment system which can thoroughly treat sulfuric acid steam and avoid pipeline blockage is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a flue gas processing system of waste incineration power plant compact structure, sulphuric acid steam treatment thoroughly, avoid pipe blockage, easy operation.

The purpose of the utility model is realized through the following technical scheme: a flue gas treatment system of a waste incineration power plant comprises a tank body, wherein the top of the tank body is provided with an outer pipe which is vertically arranged, the top surface of the outer pipe is provided with a plurality of threaded holes along the circumferential direction, the outer pipe is internally provided with an inner pipe which is axially arranged along the outer pipe, the bottom of the inner pipe is welded with a filter screen C, the outer wall of the top of the inner pipe is welded with an annular disc which is supported at the top of the outer pipe, the annular disc is provided with a plurality of through holes which correspond to the threaded holes, the annular disc penetrates through the through holes through screws and, be provided with the exhanst gas outlet on the lateral wall of jar body, exhanst gas outlet department is connected with the flue gas pipeline through the pipe strap, and the other end of flue gas pipeline is connected with the flue gas delivery pipe through the pipe strap, and the welding has annular retaining ring in the flue gas delivery pipe, and the left side of annular retaining ring is followed the right side and is left and be provided with filter screen A, the cotton layer and the filter screen B that have infiltrated alkaline solution in order.

A liquid outlet is arranged on the side wall of the tank body, and a valve is connected to the liquid outlet.

The top of the tank body is also provided with a liquid inlet, and the liquid inlet is connected with a one-way valve.

Be provided with the observation window on the lateral wall of the jar body, the observation window sets up with the exhanst gas outlet is mutually opposite.

The bottom of the tank body is provided with a plurality of supporting legs.

The diameter of the meshes of the filter screen A is equal to that of the meshes of the filter screen B, and the diameter of the meshes of the filter screen C is larger than that of the meshes of the filter screen A.

The utility model has the advantages of it is following: the utility model discloses compact structure, sulphuric acid steam treatment are thorough, avoid pipeline blocking, easy operation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is an enlarged partial view of section II of FIG. 1;

in the figure, 1-tank body, 2-outer pipe, 3-threaded hole, 4-inner pipe, 5-filter screen C, 6-annular disc, 7-through hole, 8-screw, 9-flue gas outlet, 10-flue gas pipeline, 11-flue gas discharge pipe, 12-annular retainer ring, 13-filter screen A, 14-cotton layer, 15-filter screen B, 16-liquid outlet, 17-valve, 18-liquid inlet, 19-one-way valve and 20-observation window.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 3, a flue gas treatment system of a waste incineration power plant comprises a tank body 1, an outer pipe 2 vertically arranged is arranged at the top of the tank body 1, a plurality of threaded holes 3 are formed in the top surface of the outer pipe 2 along the circumferential direction of the outer pipe, an inner pipe 4 axially arranged in the outer pipe 2, a filter screen C5 is welded at the bottom of the inner pipe 4, an annular disc 6 supported at the top of the outer pipe 2 is welded on the outer wall of the top of the inner pipe 4, a plurality of through holes 7 corresponding to the threaded holes 3 are formed in the annular disc 6, the annular disc 6 penetrates through the through holes 7 through screws 8 and is in threaded connection with the threaded holes 3, a flue gas outlet 9 is arranged on the side wall of the tank body 1, a flue gas pipeline 10 is connected to the flue gas outlet 9 through a pipe clamp, a flue gas discharge pipe 11 is connected to the other end clamp of the flue gas pipeline 10, an annular retainer ring 12, The cotton layer 14 soaked with the alkaline solution and the filter screen B15, wherein the mesh diameter of the filter screen A13 is equal to that of the filter screen B15, and the mesh diameter of the filter screen C5 is larger than that of the filter screen A13.

The side wall of the tank body 1 is provided with a liquid outlet 16, the liquid outlet 16 is connected with a valve 17, the top of the tank body 1 is also provided with a liquid inlet 18, and the liquid inlet 18 is connected with a one-way valve 19. Be provided with observation window 20 on the lateral wall of the jar body 1, observation window 20 sets up with exhanst gas outlet 9 is mutually opposite, the bottom of the jar body 1 is provided with a plurality of supporting legs.

The working process of the utility model is as follows:

s1, introducing a certain amount of alkaline solution into the tank body 1 through the one-way valve 19 by workers, and stopping introducing the alkaline solution into the tank body 1 when the liquid level of the alkaline solution is about to reach the position of the flue gas outlet 9 from the observation window 20; extending a flue gas outlet pipe of the garbage incinerator into the inner pipe 4;

s2, a filter screen C5 intercepts large particle impurities carried in the flue gas, the flue gas carries small particle impurities and passes through meshes on the filter screen C5 to move downwards, under wind pressure, sulfuric acid steam in the flue gas is firstly contacted with alkaline solution, the alkaline solution absorbs most of the sulfuric acid steam, and the small particle impurities are dissolved into the alkaline solution under the self gravity;

s3, under wind pressure, smoke is discharged from the smoke outlet 9, the smoke sequentially passes through the smoke pipeline 10, the meshes of the filter screen B15, the meshes in the cotton layer 14, the meshes of the filter screen A13 and the annular retainer ring 12 and is finally discharged from the tail end of the smoke discharge pipe 11, and when the smoke passes through the filter screen A13 and the filter screen B15, the filter screen A13 and the filter screen B15 filter residual tiny particles in the smoke, so that particle impurities in the smoke are thoroughly removed, and the blockage of the pipeline is avoided; when the flue gas passes through the meshes in the cotton layer 14, the soaked alkaline solution absorbs the residual sulfuric acid vapor in the flue gas, so that the sulfuric acid vapor in the flue gas is completely removed, and finally, the gas discharged from the flue gas discharge pipe 11 is ensured to be in accordance with the national discharge standard;

s4, when a large amount of particle impurities are accumulated on the filter screen C5, all the screws 8 are screwed out, and then the inner pipe 4 is lifted out of the outer pipe 2, so that workers can conveniently clean the particle impurities in the inner pipe 4; when a large amount of particle impurities are accumulated on the filter screen a13 and the filter screen B15, only the pipe clamp between the smoke pipeline 10 and the smoke discharge pipe 11 needs to be opened, and then the filter screen a13, the filter screen B15 and the cotton layer 14 are poured out, so that a new filter screen a13, a new filter screen B15 and a new cotton layer 14 are better.

Claims

1. The utility model provides a flue gas processing system of msw incineration power plant which characterized in that: the tank comprises a tank body (1), wherein an outer pipe (2) which is vertically arranged is arranged at the top of the tank body (1), a plurality of threaded holes (3) are formed in the top surface of the outer pipe (2) along the circumferential direction of the outer pipe, an inner pipe (4) which is axially arranged along the outer pipe is arranged in the outer pipe (2), a filter screen C (5) is welded at the bottom of the inner pipe (4), an annular disc (6) which is supported at the top of the outer pipe (2) is welded on the outer wall of the top of the inner pipe (4), a plurality of through holes (7) which correspond to the threaded holes (3) are formed in the annular disc (6), the annular disc (6) penetrates through the through holes (7) through screws (8) and is in threaded connection with the threaded holes (3), a flue gas outlet (9) is formed in the side wall of the tank body (1), a flue gas pipeline (10) is connected at the position, an annular retainer ring (12) is welded in the smoke discharge pipe (11), and a filter screen A (13), a cotton layer (14) soaked with alkaline solution and a filter screen B (15) are sequentially arranged on the left side of the annular retainer ring (12) from right to left.

2. The flue gas treatment system of a waste incineration power plant according to claim 1, characterized in that: a liquid outlet (16) is arranged on the side wall of the tank body (1), and a valve (17) is connected to the liquid outlet (16).

3. The flue gas treatment system of a waste incineration power plant according to claim 1, characterized in that: the top of the tank body (1) is also provided with a liquid inlet (18), and the liquid inlet (18) is connected with a one-way valve (19).

4. The flue gas treatment system of a waste incineration power plant according to claim 1, characterized in that: be provided with observation window (20) on the lateral wall of jar body (1), observation window (20) and exhanst gas outlet (9) are relative to be set up.

5. The flue gas treatment system of a waste incineration power plant according to claim 1, characterized in that: the bottom of the tank body (1) is provided with a plurality of supporting legs.

6. The flue gas treatment system of a waste incineration power plant according to claim 1, characterized in that: the diameter of the meshes of the filter screen A (13) is equal to that of the filter screen B (15), and the diameter of the meshes of the filter screen C (5) is larger than that of the meshes of the filter screen A (13).