CN211725282U

CN211725282U - Hydrophobic collection system of flue

Info

Publication number: CN211725282U
Application number: CN201921931476.1U
Authority: CN
Inventors: 吴绍斌
Original assignee: Huaneng Yingcheng Thermal Power Co ltd
Current assignee: Huaneng Yingcheng Thermal Power Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-10-23
Anticipated expiration: 2029-11-08

Abstract

The utility model provides a hydrophobic collection system of flue belongs to the tail gas desulfurization of power plant and handles technical field. The hydrophobic collection system of flue includes the hydrophobic collection water seal box of flue and catchment pit, and the hydrophobic pipe of flue inserts below the liquid level of collecting the water seal box, be equipped with first connecting hole and second connecting hole on the hydrophobic lateral wall of collecting the water seal box of flue, first connecting hole with through first pipeline intercommunication between the catchment pit, the second connecting hole with through second pipeline intercommunication between the catchment pit, first connecting hole is located second connecting hole top, the second connecting hole sets up the hydrophobic bottom of collecting the water seal box of flue, the top of catchment pit with the hydrophobic bottom parallel and level of collecting the water seal box of flue has solved current hydrophobic problem that causes the pipeline to block up and pipeline to corrode easily.

Description

Hydrophobic collection system of flue

Technical Field

The utility model belongs to the technical field of coal fired power plant tail gas desulfurization treatment, in particular to clean flue hydrophobic means of desulfurization.

Background

In the wet flue gas desulfurization process of the thermal power plant, flue gas enters an absorption tower through an original flue, reversely contacts with spray layer slurry and generates a desulfurization reaction, and the desulfurized flue gas is demisted through a demister at the top of the tower and is discharged into a chimney through a flue. The flue gas contains a large amount of liquid drops in a saturated state, the liquid drops cannot be completely removed by the demister, the residual liquid drops can separate out moisture in the flue and the chimney along with the reduction of the temperature to form flue hydrophobic matter, and the flue hydrophobic matter flows back to the bottom of the flue, the absorption tower or the chimney.

The flue drain ports at the inlet and the outlet of the desulfurization absorption tower are arranged at the nonmetallic expansion joints of the inlet and the outlet flues of the absorption tower and are converged with chimney condensate water to a main pipe to be discharged into the absorption tower, and as the drain is mixed with ash and gypsum, and a part of drain pipes are horizontally arranged and more elbows and tees are arranged, the drain deposition and blockage are easily caused. On the other hand, the pH value of the drained water of the flue is about 2.5 and is acidic, the drained water and the flue gas corrode the pipeline for a long time and easily cause leakage, most of the pipeline is in high altitude to cause difficulty in maintenance, and the outlet of the drain pipe is in the absorption tower, so that whether the drained water is smooth cannot be observed in daily routing inspection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the hydrophobic pipeline that causes of flue causes pipeline blockage and pipeline corrosion easily among the prior art, the utility model provides a hydrophobic collection system of flue has cancelled the horizontal line, has reduced the quantity of tee bend, prevents that hydrophobic from remaining in the pipeline, has stopped hydrophobic jam and the corruption to the pipeline.

In order to achieve the technical purpose, the technical scheme of the utility model a hydrophobic collection system of flue is provided, including the hydrophobic collection water seal box of flue and the pit that catchments, the flue drain pipe inserts below the liquid level of collecting the water seal box, be equipped with first connecting hole and second connecting hole on the hydrophobic lateral wall of collecting the water seal box of flue, first connecting hole with through first pipeline intercommunication between the pit that catchments, the second connecting hole with through second pipeline intercommunication between the pit that catchments, first connecting hole is located second connecting hole top, the second connecting hole sets up the hydrophobic bottom of collecting the water seal box of flue, the top of pit that catchments with the hydrophobic bottom parallel and level of collecting the water seal box of flue.

Further, a drain valve is also mounted on the second pipeline.

Further, the drain pipe and the water tank are made of stainless steel.

Furthermore, the drain pipe is made of carbon steel, and lining rubber is arranged on the inner wall of the pipe; the flue drainage collection water seal box is made of carbon steel, and glass flakes are adhered to the inner wall of the flue drainage collection water seal box.

Furthermore, the flue hydrophobic collection water seal box is of a cube structure, and the size of the flue hydrophobic collection water seal box of the cube structure is 1500mm multiplied by 1500 mm.

Further, the height of the first connecting hole from the ground is 1200mm, and the height of the second connecting hole from the ground is 50 mm.

Compared with the prior art, the beneficial effects of the utility model include: the utility model provides a hydrophobic collection system of flue leads to below the liquid level of collecting the water seal box with the flue drain pipe perpendicularly, the water seal box seals the flue gas in water, and the hydrophobic row of flue simultaneously is to collecting the water seal box in, along with the rising of the liquid level of collecting the water seal box, moisture in the water seal box overflows to the pit that catchments through first pipeline in. The utility model provides a cancel the horizontal pipeline among the hydrophobic collection system of flue, reduced three way bend's quantity, stopped hydrophobic remaining in the pipeline, and the hydrophobic pipe export is located hydrophobic collection water seal box below the liquid level and forms the water seal, has stopped the flue gas leakage. Whether the drainage is smooth is conveniently patrolled and examined by operators and maintainers in daily life, the drainage is prevented from being blocked in a flue or a pipeline, and backwashing can be carried out if the drainage pipeline is blocked.

Drawings

Fig. 1 is a schematic structural diagram of a flue drainage collection system provided by the present invention;

description of reference numerals:

1-chimney, 2-outlet flue, 3-absorption tower, 4-inlet flue, 5-blower, 6-outlet flue drain pipe, 7-inlet flue drain pipe, 8-flue drain collection water seal tank, 9-overflow pipe, 10-blow-off pipe, 11-blow-off valve, 12-flue drain pipe and 13-water collection pit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to solve the problem of the pipe blockage and the corrosion caused by the hydrophobic flue, the embodiment of the utility model provides a hydrophobic collection system of flue. In particular, reference may be made to fig. 1.

As shown in fig. 1, the utility model provides a hydrophobic collection system of flue, including hydrophobic collection water seal box 8 and the sump 13 of flue, flue drain pipe 12 inserts the hydrophobic collection water seal box 8's of flue below the liquid level, be equipped with first connecting hole and second connecting hole on the lateral wall of collection water seal box 8, first connecting hole with through first pipeline 9 intercommunication between the sump 13, the second connecting hole with communicate through second pipeline 10 between the sump 13, first pipeline 9 is also called the overflow pipe, second pipeline 10 is also called the blow off pipe, first connecting hole is located second connecting hole top, the second connecting hole sets up the hydrophobic bottom of collecting water seal box 8 of flue, the top of sump 13 with the hydrophobic bottom parallel and level of collecting water seal box 8 of flue.

The utility model discloses the produced flue drainage of the import flue 4 of well absorption tower 3 flows into flue drain pipe 12 from import flue drain pipe 7, the flue drainage in export flue 2 flows into in 6 among the flue drain pipe in flue drain pipe and chimney 1's comdenstion water also flows into in export flue drain pipe 6, it collects in the hydrophobic collection water seal box 8 of flue drain pipe 12 back perpendicular downward to go up the pipeline, and below the liquid level in the water seal box 8 of inserting, form the water seal, the leakage of flue gas has been stopped. When the liquid level in the collecting water seal box 8 reaches a certain height, water overflows into a water collecting pit 13 through the first pipeline 9. Still be provided with the suction pump (not shown in the figure) in the pit 13 catchments, the suction pump can with moisture in the pit 13 catchments is taken out to reuse in the absorption tower 3. A second pipeline 10 is further arranged at the bottom of the side wall of the flue hydrophobic collection water seal box 8, and impurities and sludge deposited at the bottom of the water seal box 8 can be discharged through the second pipeline 10.

The utility model provides a cancel the horizontal pipeline among the hydrophobic collection system of flue, reduced three way bend's quantity, stopped hydrophobic remaining in the pipeline, and the hydrophobic formation water seal that collects below 8 liquid levels of water seal box of hydrophobic collection in flue of drain pipe export, stopped the flue gas leakage. The drainage in the drainage pipe 12 is discharged into the collection water seal box 8, when the liquid level in the collection water seal box 8 reaches a certain height, the drainage overflows into the water collection pit 13 and can be reused, and the environment pollution is reduced while the drainage is prevented from being blocked in a flue or a pipeline.

Wherein, still install blowoff valve 11 on the second pipeline 10, blowoff valve 11 is in long closed state, only when collect in the water seal case 8 impurity deposit and reach certain degree just open blowoff valve 11, drain the impurity and deposit in the collection water seal case 8 of flue and discharge. The blowoff valve 11 may be specifically selected as a butterfly valve of DN100, where DN100 refers to a nominal diameter of 100 mm.

Wherein, the flue drain pipe 12 and the flue drain collection water seal box 8 are made of stainless steel. Because the hydrophobic property is acidic, in order to further reduce the corrosion of the hydrophobic property to the hydrophobic pipeline, the flue hydrophobic pipe 12 and the flue hydrophobic collection water seal tank 8 are both made of stainless steel.

Or, in order to reduce the production and manufacturing cost, the flue drain pipe 12 may also be made of carbon steel, and the inner wall of the flue drain pipe 12 is provided with lining glue; the flue hydrophobic collection water seal box 8 is made of carbon steel, and glass flakes are adhered to the inner wall of the flue hydrophobic collection water seal box 8.

More specifically, the flue hydrophobic collection water seal box 8 is of a cube structure, and the size of the flue hydrophobic collection water seal box 8 of the cube structure is 1500mm × 1500mm × 1500 mm. The height of the first connecting hole from the ground is 1200mm, and the height of the second connecting hole from the ground is 50 mm.

The utility model provides a hydrophobic collection system of flue is through letting in flue drain pipe 12 perpendicularly collect in the water seal box 8, cancelled the horizontal pipeline, reduced three-way bend's quantity, stopped hydrophobic remaining in the pipeline, and 1 export of flue drain pipe is located hydrophobic collection 2 below the liquid level of water seal box and forms the water seal, has stopped the flue gas leakage. Whether the drainage is smooth is convenient for operation and maintenance personnel to inspect in daily life, the drainage is prevented from being blocked in a flue or a pipeline, and backwashing can be carried out if 1 pipeline of a flue drainage pipe is blocked.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a hydrophobic collection system of flue, its characterized in that, includes the hydrophobic collection water seal box of flue and catchments the pit, and the hydrophobic pipe of flue inserts below the liquid level of collecting the water seal box, the hydrophobic lateral wall of collecting the water seal box of flue is equipped with first connecting hole and second connecting hole, first connecting hole with through first pipeline intercommunication between the pit that catchments, the second connecting hole with through second pipeline intercommunication between the pit that catchments, first connecting hole is located second connecting hole top, the second connecting hole sets up the hydrophobic bottom of collecting the water seal box of flue, the top of pit that catchments with the hydrophobic bottom parallel and level of collecting the water seal box of flue.

2. The hydrophobic flue collection system of claim 1, wherein a drain valve is further mounted on the second conduit.

3. The flue drain collection system of claim 1, wherein the flue drain pipe and the flue drain collection water seal box are made of stainless steel.

4. The hydrophobic collection system of claim 1, wherein the hydrophobic pipe is made of carbon steel, and the inner wall of the hydrophobic pipe is provided with lining rubber; the flue drainage collection water seal box is made of carbon steel, and glass flakes are adhered to the inner wall of the flue drainage collection water seal box.

5. The hydrophobic collection system of claim 1, wherein the hydrophobic collection water seal box of the flue is of a cube structure, and the dimensions of the hydrophobic collection water seal box of the cube structure are 1500mm x 1500 mm.

6. The hydrophobic collection system of claim 1, wherein the first connection hole has a height of 1200mm from the ground and the second connection hole has a height of 50mm from the ground.