CN217909723U

CN217909723U - Back-flushing mechanism for high-humidity flue gas treatment

Info

Publication number: CN217909723U
Application number: CN202221801187.1U
Authority: CN
Inventors: 原志文; 王国宇
Original assignee: Henan Longyu Environmental Protection Technology Co ltd
Current assignee: Henan Longyu Environmental Protection Technology Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-11-29
Anticipated expiration: 2032-07-12

Abstract

The utility model belongs to the technical field of environmental protection equipment, in particular to a back washing mechanism for treating high-humidity flue gas, which comprises a flue gas channel, a dust removal device, a desulfurization device, a circulating water pipe, a circulating water pump, a slurry pool, a back washing water pipe and a liquid outlet water pipe, wherein the flue gas channel is communicated with the dust removal device, and the dust removal device is communicated with the lower end of the desulfurization device through a flue inlet; the desulfurization device is internally provided with a zero remover, a spray pipe, a compressed air pipe and a reaction plate from top to bottom in sequence, the reaction plate is arranged above a flue inlet, and a smoke guide plate is arranged at the flue inlet; the utility model provides an among the prior art can only wash reaction plate bottom, lead to the solution after the reaction to have the condition of remaining, arouse the scale deposit of reaction plate, block up for the flue gas is through not smooth.

Description

Back-flushing mechanism for high-humidity flue gas treatment

Technical Field

The utility model belongs to the technical field of the environmental protection equipment, concretely relates to back flush mechanism is used in high wet flue gas processing.

Background

Sulfur dioxide has serious pollution to the atmosphere, and excessive discharge of sulfur dioxide can cause serious pollution such as acid rain and the like, and is very important for controlling the sulfur dioxide. When the coal is used, the coal is often not fully combusted, and the discharged flue gas carries pollutants such as dust, sulfur dioxide and the like to be discharged into the air, so that the coal also brings great threat to the health of people. After combustion, the flue gas desulfurization is carried out by additionally arranging an absorption tower outside the tail flue to capture and absorb sulfur dioxide, thereby achieving the effect of improving the desulfurization efficiency. The flue gas desulfurization after combustion is generally a dry method and a wet method, wherein the dry method comprises a spray drying method, a flue is sprayed with an absorbent and the like, and the absorbent used in the wet method is mainly classified and applied by a limestone method, a sodium-alkali method and an ammonia method.

The wet limestone-gypsum method desulfurization technology is the mainstream technology of flue gas desulfurization in China at present, but the technology still has a plurality of technical defects. The gypsum produced by the method is easy to solidify in the desulfurization equipment, and blocks the desulfurization equipment, thereby influencing the use effect. After a period of use, the components in the desulfurization equipment need to be replaced, which increases the cost, and a back washing function needs to be added into the equipment generally, so that the blockage problem is reduced.

Chinese patent with application number CN201520518857.2 discloses a flue gas desulfurization system, which comprises a flue gas channel, a dust removal device, a desulfurization device, a circulating water pipe, a circulating water pump, a slurry pool, a back flush water pipe and a liquid outlet water pipe, wherein the flue gas channel is communicated with the dust removal device, and the dust removal device is communicated with the lower end of the desulfurization device through a flue inlet; the desulfurization device is internally provided with a zero remover, a spray pipe, a compressed air pipe and a reaction plate from top to bottom in sequence, the reaction plate is arranged above a flue inlet, and a smoke guide plate is arranged at the flue inlet; the top of the desulfurization device is provided with a flue outlet, the bottom of the desulfurization device is provided with a reaction liquid outlet, the reaction liquid outlet is connected with a back flush water pipe, and the back flush water pipe is provided with a back flush water pump and a first regulating valve.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model adopts the following technical scheme:

back flush mechanism for high wet flue gas treatment includes:

the tank body is internally provided with a reaction plate;

the backwashing pipeline extends into the bottom of the tank body and extends into the tank body;

a washing part which is arranged at the upper part of the reaction plate and is connected with the inner wall of the tank body;

wherein, one end of the flushing part facing the reaction plate is provided with a plurality of first flushing heads which are communicated with the back flushing pipeline.

Furthermore, the tank body is internally connected with two oppositely arranged flushing parts, the two flushing parts are positioned above the first flushing part, and the back flushing pipeline is provided with a shunt pipe connected with the two flushing parts.

Furthermore, one side of the second flushing part close to the inner wall of the tank body is provided with a plurality of second flushing heads communicated with the shunt pipes.

And the guide plate is arranged between the first washing part and the second washing part and is fixed at the lower end of the second washing part through a connecting block.

Furthermore, the inner wall of the top of the tank body is connected with a T-shaped connecting frame, and the bottom of the T-shaped connecting frame is connected with a flow dividing pipe to fix the backwashing pipeline.

Further, a spray header arranged towards the reaction plate is arranged in the tank body and communicated with an external reaction liquid pipe.

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

1. the upper end of the reaction plate is washed by the first washing head, so that the scaling and blocking conditions of the reaction plate are improved, the smoke gas is smoother to pass through, less solution remains after reaction, and the reaction plate is more comprehensively and cleanly washed;

2. the second flushing part is arranged close to the top of the tank body, and when the inner wall of the tank body is flushed, water liquid can flow downwards along the inner wall of the tank body, so that the tank body is flushed more thoroughly.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a back-washing mechanism for treating high-humidity flue gas according to the present invention;

reference numerals in the drawings of the specification include:

the device comprises a tank body 1, a T-shaped connecting frame 10, a spray header 11, a reaction liquid pipe 12, a reaction liquid valve 13, a smoke outlet 14, a reaction plate 2, a back flush pipeline 3, a shunt pipe 30, a flush valve 31, a first pump body 32, a first flush part 4, a first flush head 40, a second flush part 5, a second flush head 50, a guide plate 51, a connecting block 52, a smoke pipeline 6, a dehumidifier 60, a solution tank 7, a second pump body 71 and a recovery pipe 72.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b):

as shown in figure 1, the utility model discloses a back flush mechanism for high wet flue gas treatment, including jar body 1, be provided with reaction plate 2 in jar body 1, back flush pipeline 3 stretches into jar body 1 bottom and extends to jar body 1 in, back flush pipeline 3 is provided with the sealing washer (not shown in the figure) with jar body 1 junction, prevents that jar body 1 cleaning process, water liquid from leaking from both junctions, jar body 1 top inner wall is connected with T type and links 10, T type even the frame 10 bottom is connected with shunt tubes 30, with back flush pipeline 3 fixed, back flush pipeline 3 can adopt the tubular metal resonator.

During desulfurization treatment, a flushing valve 31 connected to the back flushing pipeline 3 is closed, a reaction liquid valve 13 arranged on the reaction liquid pipe 12 is opened, wherein a dehumidifier 60 is connected to the flue gas pipeline 6, the dedusted flue gas firstly enters the dehumidifier 60, the dehumidifier 60 can be selected to be in a heat pipe heating mode, moisture contained in the passing flue gas is removed, then the flue gas enters the tank body 1 from the lower part of the tank body 1 for desulfurization treatment, lime slurry enters the tank body 1 from the reaction liquid pipe 12, a spray head 11 arranged towards the reaction plate 2 is arranged in the tank body 1, the spray head 11 is communicated with the external reaction liquid pipe 12 and then sprayed out through the spray head 11, the lime slurry falls onto the reaction plate 2 to form a water layer, the sulfur-containing flue gas passes through the reaction plate 2 from the lower part of the reaction plate 2, the sulfur-containing flue gas can be fully contacted with the lime slurry, a small amount of unreacted sulfur-containing flue gas can directly react with the lime slurry sprayed out of the spray head 11 again, and the desulfurization efficiency is high. The desulfurized flue gas is discharged through a flue gas outlet 14 formed at the top of the tank body 1.

The lime slurry absorbing sulfur dioxide enters the solution tank 7 from the bottom of the tank body 1 through the recovery pipe 72, and the highest position of the solution tank 7 is lower than the bottom of the tank body 1. The reaction liquid pipe 12 is communicated with a solution tank 7 arranged outside the tank body 1, a second pump body 71 is arranged between the reaction liquid pipe and the solution tank 7, the solution tank 7 is divided into an upper cavity and a lower cavity, the upper cavity is used for storing lime slurry, the lower cavity can be used for storing the solution flushed and desulfurized by the tank body 1, the bottom of the tank body 1 is connected with a recovery pipe 72, and the recovery pipe 72 is connected with the lower cavity.

The first washing part 4 is arranged at the upper part of the reaction plate 2 and is connected with the inner wall of the tank body 1, wherein one end of the first washing part 4 facing the reaction plate 2 is provided with a plurality of first washing heads 40, and the first washing heads 40 are communicated with the back washing pipeline 3.

The flushing pipeline 3 is communicated with an external water source, when back flushing is carried out, a flushing valve 31 connected to the back flushing pipeline 3 is opened, the first pump body 32 is started, the reaction liquid valve 13 arranged on the reaction liquid pipe 12 is closed, water liquid for cleaning enters the flushing part 4 through the back flushing pipeline 3, the upper end of the reaction plate 2 is flushed through the first flushing head 40, the situation that the bottom of the reaction plate 2 can only be flushed in the prior art, the residual of the solution after reaction is caused, scaling and blockage of the reaction plate 2 are caused is avoided, smoke gas is enabled to pass through difficultly, and the blocked reaction plate 2 is flushed more comprehensively and cleaner.

The two parts 5 of washing that are set up in the internal connection of jar body 1, wash the second part 5 and be located and wash the top of one 4, and be provided with on the back flush pipeline 3 and wash the shunt tubes 30 that the second part 5 is connected, wash the second part 5 and be close to one side of jar body 1 inner wall and be provided with a plurality of second and wash the head 50 that are linked together with shunt tubes 30, guide plate 51 sets up and washes between one 4 and the second part 5 of washing and is fixed in the lower extreme that washes the second part 5 through connecting block 52. Through the shunt tubes 30, the water liquid is introduced into the second washing parts 5, wherein the second washing heads 50 spray the water liquid to the inner wall of the tank body 1, and the second washing parts 5 are arranged at the positions close to the top of the tank body 1, so that the water liquid can flow downwards along the inner wall of the tank body 1 while the inner wall of the tank body 1 is washed, and the tank body 1 is washed more thoroughly as a whole.

In order to ensure the pertinence of the two flushing parts 5 to the flushing of the inner wall of the tank body 1, two guide plates 51 are arranged to incline towards one side of the inner wall of the tank body 1, water liquid jets on the inner wall of the tank body 1 and rebounds on the guide plates 51, and the water liquid is guided to the tank body 1 along the guide plates 51.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics of the embodiments is not described herein, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date.

Claims

1. Back flush mechanism for high wet flue gas handles, its characterized in that includes:

the tank body is internally provided with a reaction plate;

wherein, one end of the flushing part facing the reaction plate is provided with a plurality of first flushing heads which are communicated with a back flushing pipeline.

2. The back-flushing mechanism for high-humidity flue gas treatment as claimed in claim 1, wherein: the tank body is internally connected with two oppositely arranged flushing parts, the two flushing parts are positioned above the first flushing part, and the back flushing pipeline is provided with a shunt pipe connected with the two flushing parts.

3. The back-flushing mechanism for high-humidity flue gas treatment as claimed in claim 2, wherein: and one side of the second washing part, which is close to the inner wall of the tank body, is provided with a plurality of second washing heads communicated with the shunt pipes.

4. The backwash mechanism for high-humidity flue gas treatment as claimed in claim 3, characterized in that: the device also comprises a guide plate, wherein the guide plate is arranged between the first washing part and the second washing part and is fixed at the lower end of the second washing part through a connecting block.

5. The backwash mechanism for high humidity flue gas treatment as claimed in claim 4, wherein: the inner wall of the top of the tank body is connected with a T-shaped connecting frame, and the bottom of the T-shaped connecting frame is connected with a flow dividing pipe to fix the backwashing pipeline.

6. The backwash mechanism for high humidity flue gas treatment as claimed in claim 5, wherein: the tank body is internally provided with a spray head arranged towards the direction of the reaction plate, and the spray head is communicated with an external reaction liquid pipe.