Pipeline structure for preventing bubbling pollution of absorption tower

Abstract

The utility model provides a pipeline structure for preventing bubbling pollution of an absorption tower. The pipeline structure is characterized in that a pressure balance pipe is mounted at the top of an absorption tower, an absorption tower defoaming box is mounted at the other end of the pressure balance pipe, a process water pipe is mounted at the top of the absorption tower defoaming box, and a mounting head is mounted at one end of the process water pipe; a rotating head is mounted at the other end of the mounting head, and a shower head is mounted at the other end of the rotating head. According to the pipeline structure for preventing bubbling pollution of the absorption tower, the surface tension of foam is changed in a spraying manner, so that the foam is automatically broken in the box, flows into the trench of the absorption tower along the arranged discharge pipe of the defoaming box, and returns to the tower through the pit pump; therefore, pollution to the tower wall and the ground can be avoided without changing the structure of the overflow pipe, and environmental pollution and equipment corrosion caused by foam drifting in the absorption tower can be relieved through the design.

Description

Technical Field

[0001] The utility model relates to the field of thermal power generation industry, in particular to a pipeline structure for preventing foaming pollution of an absorption tower. Background Art

[0002] A thermal power plant is a plant that uses combustibles as fuel to produce electricity. Its basic production process is: when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] At present, the desulfurization absorption tower of the thermal power plant has irregular bubbling and overflowing phenomena during operation. If only overflow occurs, the overflowing slurry will flow into the absorption tower pit through the overflow pipe and will not cause environmental pollution.

[0004] However, overflow is generally accompanied by foaming. The foam produced in the absorption tower will flow out along the upper drain pipe of the overflow pipe. At the same time, the absorption tower is also equipped with a collecting pipe, which is also equipped with a pressure balance port. Slurry bubbles are discharged at both locations, which will cause pollution to the surrounding equipment and ground of the absorption tower after dissipation.

[0005] Therefore, it is necessary to provide a pipeline structure that can prevent foaming and contamination of the absorption tower to solve the above technical problems. Utility Model Content

[0006] The utility model provides a pipeline structure for preventing foaming pollution in an absorption tower, which solves the problems of environmental pollution and equipment corrosion caused by foam drifting in the absorption tower.

[0007] In order to solve the above technical problems, the utility model provides a pipeline structure for preventing the foaming pollution of an absorption tower, comprising: an absorption tower;

[0008] A pressure balance pipe, the pressure balance pipe is installed at the top of the absorption tower, the other end of the pressure balance pipe is installed with an absorption tower defoaming box, the top of the absorption tower defoaming box is installed with a process water pipe, one end of the process water pipe is installed with a mounting head, the other end of the mounting head is installed with a rotating head, the other end of the rotating head is installed with a shower, and a defoaming box discharge pipe is installed on one side of the absorption tower defoaming box;

[0009] A gypsum removal pump return pipe is installed on the top of the absorption tower. The absorption tower is also equipped with a limestone slurry supply pipe, an absorption tower pit return pipe, an accident return pump pipeline, an overflow pipe to the air port and an absorption tower collection pipe. The outer surface of the overflow pipe to the air port is equipped with an absorption tower overflow pipe;

[0010] The shower head is located inside the defoaming box of the absorption tower. The shower head will rotate and swing with the water pressure to eliminate the foam in the box. The other end of the process water pipe is connected to the pump body. The pressure balance pipe can balance the pressure in the collection management. The gypsum exclusion pump in the return pipe is returned to the absorption tower for use. The limestone slurry supply pipe can supply limestone slurry to the absorption tower to adjust the pH value. The absorption tower pit return pipe returns from the pit to the absorption tower for use. The accident slurry box in the accident return pump pipeline returns slurry to the absorption tower for use.

[0011] Preferably, a valve is installed at the other end of the defoaming tank discharge pipe, the absorption tower overflow pipe can drain the overflow slurry to the pit, and the absorption tower collecting pipe collects all the medium entering the tower.

[0012] Preferably, the defoaming box of the absorption tower collects foam generated when overflow occurs in the absorption tower, and the defoaming box discharge pipe drains the liquid in the collection box to the absorption tower pit, and the water sprayed by the shower head at one end of the process water pipe is atomized to break the foam and rinse the defoaming box of the absorption tower.

[0013] Preferably, a sealing ring is installed on the top of the defoaming box of the absorption tower, a telescopic rod is installed on the top of the sealing ring, and limit strips are installed on the front and back of the inner wall of the defoaming box of the absorption tower;

[0014] The other end of the pressure balance pipe can be connected to a position near the top of one side of the defoaming tank of the absorption tower to input the foam from one side of the defoaming tank of the absorption tower.

[0015] Preferably, a movable plate is installed at the telescopic end of the telescopic rod through a fixed plate, and a connecting pipe is installed on the top of the movable plate;

[0016] The inlet of the connecting pipe is connected to the process water pipe, and the outer surface of the connecting pipe is connected to the nozzle through a tee head and a pipeline.

[0017] Preferably, the bottom of the movable plate is provided with multiple rows of conical thorns, and the bottom of the movable plate is provided with multiple rows of nozzles;

[0018] The conical spines can puncture the foam as the movable plate moves up and down.

[0019] Compared with the related art, the pipeline structure for preventing the absorption tower from foaming and pollution provided by the utility model has the following beneficial effects:

[0020] The utility model provides a pipeline structure for preventing foaming pollution in an absorption tower. In order to prevent the pollution of peripheral equipment and the ground of the absorption tower after dispersion, the defoaming box and the pressure balance pipe of the absorption tower are first connected, and the foam overflowing from the absorption tower is collected to prevent it from directly falling onto the wall of the absorption tower and dispersing to the surrounding area. At the same time, in order to prevent the foam from overflowing again from the defoaming box of the absorption tower, the process water pipe is connected to the flushing water shower. In this process, the shower can adjust the spraying direction through the water flow and the rotating head, and the surface tension of the foam is changed by spraying, so that the foam breaks up by itself in the box, flows into the absorption tower trench along the set defoaming box discharge pipe, and returns to the tower again through the pit pump. In this way, the pollution of the tower wall and the ground can be prevented without changing the overflow pipe structure. The design can alleviate the environmental pollution and equipment corrosion caused by the dispersion of foam in the absorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a first embodiment of a pipeline structure for preventing foaming and pollution in an absorption tower provided by the utility model;

[0022] Figure 2 Provide a schematic diagram of the structure of the valve for the utility model;

[0023] Figure 3 A schematic diagram of the structure of a shower head is provided for the utility model;

[0024] Figure 4 A schematic structural diagram of a second embodiment of a pipeline structure for preventing foaming and pollution in an absorption tower provided by the utility model;

[0025] Figure 5 The utility model provides a structural schematic diagram of a conical thorn.

[0026] Numbers in the figure: 1. Pressure balance pipe, 2. Gypsum removal pump return pipe, 3. Limestone slurry supply pipe, 4. Absorption tower pit return pipe, 5. Accident return pump pipeline, 6. Overflow pipe to the air port, 7. Absorption tower overflow pipe, 8. Absorption tower collecting pipe, 9. Absorption tower defoaming box, 10. Defoaming box discharge pipe, 11. Process water pipe, 12. Absorption tower, 13. Valve, 14. Mounting head, 15. Rotating head, 16. Shower, 17. Sealing ring, 18. Telescopic rod, 19. Fixed plate, 20. Movable plate, 21. Limiting strip, 22. Connecting pipe, 23. Conical thorn, 24. Sprinkler. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 ,in, Figure 1A schematic structural diagram of a first embodiment of a pipeline structure for preventing foaming and pollution in an absorption tower provided by the utility model; Figure 2 Provide a schematic diagram of the structure of the valve for the utility model; Figure 3 The utility model provides a schematic diagram of the structure of the shower. The pipeline structure for preventing the absorption tower from foaming and pollution comprises: an absorption tower 12;

[0029] A pressure balance pipe 1, the pressure balance pipe 1 is installed on the top of the absorption tower 12, the other end of the pressure balance pipe 1 is installed with an absorption tower defoaming box 9, the top of the absorption tower defoaming box 9 is installed with a process water pipe 11, one end of the process water pipe 11 is installed with a mounting head 14, the other end of the mounting head 14 is installed with a rotating head 15, the other end of the rotating head 15 is installed with a shower 16, and one side of the absorption tower defoaming box 9 is installed with a defoaming box discharge pipe 10;

[0030] A gypsum removal pump return pipe 2, which is installed on the top of an absorption tower 12. A limestone slurry supply pipe 3, an absorption tower pit return pipe 4, an accident return pump pipeline 5, an overflow pipe to the air port 6 and an absorption tower collecting pipe 8 are also installed on the absorption tower 12. An absorption tower overflow pipe 7 is installed on the outer surface of the overflow pipe to the air port 6;

[0031] The shower head 16 is located inside the defoaming box 9 of the absorption tower. The shower head 16 will rotate and swing with the water pressure to eliminate the foam in the box. The other end of the process water pipe 11 is connected to the pump body. The pressure balance pipe 1 can balance the pressure in the collection management. The gypsum removal pump in the gypsum removal pump return pipe 2 returns to the absorption tower for use. The limestone slurry supply pipe 3 can supply limestone slurry to the absorption tower to adjust the pH value. The absorption tower pit return pipe 4 returns from the pit to the absorption tower for use. The accident return pump pipeline 5 in the accident slurry box returns slurry to the absorption tower for use. The overflow pipe to the air port 6 can balance the pressure in the absorption tower, and siphon phenomenon is inevitable.

[0032] A valve 13 is installed at the other end of the defoaming tank discharge pipe 10, the absorption tower overflow pipe 7 can drain the overflow slurry to the pit, and the absorption tower collection pipe 8 collects all the medium entering the tower;

[0033] The valve 13 is opened and closed manually.

[0034] The defoaming box 9 of the absorption tower collects the foam generated when the absorption tower overflows, and the defoaming box discharge pipe 10 drains the liquid in the collection box to the absorption tower pit. The water sprayed by the shower head 16 at one end of the process water pipe 11 is atomized to break the foam and rinse the defoaming box 9 of the absorption tower.

[0035] The working principle of the pipeline structure for preventing foaming and pollution of the absorption tower provided by the utility model is as follows:

[0036] First, the defoaming box 9 of the absorption tower is connected to the pressure balance pipe 1, and the foam overflowing from the absorption tower 12 is collected to prevent it from falling directly onto the wall of the absorption tower and drifting to the surrounding area. At the same time, in order to prevent the foam from overflowing from the defoaming box 9 of the absorption tower again, the process water pipe 11 is connected to the flushing water increase shower 16. In this process, the shower 16 can adjust the spraying direction through the water flow and the rotating head 15, and use the spraying method to change the surface tension of the foam, so that the foam breaks by itself in the box, and flows into the absorption tower 12 ditch along the set defoaming box discharge pipe 10, and returns to the tower again through the pit pump. In this way, the tower wall and ground pollution can be prevented without changing the overflow pipe structure.

[0037] Compared with the related art, the pipeline structure for preventing the absorption tower from foaming and pollution provided by the utility model has the following beneficial effects:

[0038] In order to avoid pollution of the surrounding equipment and the ground of the absorption tower after dispersion, the absorption tower defoaming box 9 and the pressure balance pipe 1 are first connected, and the foam overflowing from the absorption tower 12 is collected to prevent it from falling directly onto the absorption tower wall and dispersing to the surrounding area. At the same time, in order to prevent the foam from overflowing from the absorption tower defoaming box 9 again, the process water pipe 11 is connected to the flushing water increase shower 16. In this process, the shower 16 can adjust the spraying direction through the water flow and the rotating head 15, and use the spraying method to change the surface tension of the foam, so that the foam breaks by itself in the box, and flows into the absorption tower 12 ditch along the set defoaming box discharge pipe 10, and returns to the tower again through the pit pump. In this way, the tower wall and ground pollution can be prevented without changing the overflow pipe structure. This design can alleviate the environmental pollution and equipment corrosion caused by the dispersion of foam in the absorption tower 12.

[0039] Second embodiment

[0040] Please refer to Figure 4-Figure 5 , Figure 4 A schematic structural diagram of a second embodiment of a pipeline structure for preventing foaming and pollution in an absorption tower provided by the utility model; Figure 5 The utility model provides a schematic diagram of the structure of the conical thorn. Based on the pipeline structure for preventing the foaming pollution of the absorption tower provided by the first embodiment of the present application, the second embodiment of the present application proposes another pipeline structure for preventing the foaming pollution of the absorption tower. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0041] Specifically, the difference of the pipeline structure for preventing the absorption tower from foaming pollution provided in the second embodiment of the present application is that a sealing ring 17 is installed on the top of the absorption tower defoaming box 9, a telescopic rod 18 is installed on the top of the sealing ring 17, and limit strips 21 are installed on the front and back of the inner wall of the absorption tower defoaming box 9;

[0042] The other end of the pressure balance pipe 1 can be connected to a position near the top of one side of the absorption tower defoaming box 9 to input the foam from one side of the absorption tower defoaming box 9. The function of the limit strip 21 is to increase the stability of the movable plate 20 when it moves up and down.

[0043] The telescopic end of the telescopic rod 18 is mounted with a movable plate 20 via a fixed plate 19, and a connecting pipe 22 is mounted on the top of the movable plate 20;

[0044] The inlet of the connecting pipe 22 is connected to the process water pipe 11 , and the outer surface of the connecting pipe 22 is connected to the nozzle 24 through a tee and a pipeline. The front and back of the movable plate 20 are provided with grooves that are stuck in the outer surface of the limit strip 21 .

[0045] The bottom of the movable plate 20 is provided with multiple rows of conical spikes 23, and the bottom of the movable plate 20 is provided with multiple rows of nozzles 24;

[0046] The spray head 24 and the conical thorn 23 are cross-mounted, and the conical thorn 23 can puncture the foam when the movable plate 20 moves up and down.

[0047] Compared with the related art, the pipeline structure for preventing the absorption tower from foaming and pollution provided by the utility model has the following beneficial effects:

[0048] In order to improve the efficiency of foam elimination inside the absorption tower defoaming box 9, a telescopic rod 18 is installed at the top of the absorption tower defoaming box 9 through a sealing ring 17, and a movable plate 20 is installed at the telescopic end of the telescopic rod 18. Then, it is only necessary to install multiple groups of nozzles 24 at the bottom of the movable plate 20, and connect the nozzles 24 to the process water pipe 11 through the connecting pipe 22, and multiple rows of conical thorns 23 are installed at the bottom of the movable plate 20. In actual use, the foam is transported from the side of the absorption tower defoaming box 9 near the top to the inside of the absorption tower defoaming box 9 through the pressure balance pipe 1. Then, the telescopic rod 18 is started to drive the movable plate 20 to reciprocate up and down inside the absorption tower defoaming box 9, and the movement spacing is controllable. The conical thorns 23 are used to pierce the foam, and at the same time, the water inside the process water pipe 11 will be evenly sprayed inside the absorption tower defoaming box 9 through the nozzles 24 to eliminate the foam. Through this design, the nozzles 24 and the conical thorns 23 are used to improve the efficiency of foam elimination.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pipeline structure for preventing foaming pollution in an absorption tower, characterized in that: include: Absorption tower; A pressure balance pipe, the pressure balance pipe is installed at the top of the absorption tower, the other end of the pressure balance pipe is installed with an absorption tower defoaming box, the top of the absorption tower defoaming box is installed with a process water pipe, one end of the process water pipe is installed with a mounting head, the other end of the mounting head is installed with a rotating head, the other end of the rotating head is installed with a shower, and a defoaming box discharge pipe is installed on one side of the absorption tower defoaming box; The gypsum removal pump return pipe is installed on the top of the absorption tower. The absorption tower is also equipped with a limestone slurry supply pipe, an absorption tower pit return pipe, an accident return pump pipeline, an overflow pipe to the air port and an absorption tower collecting pipe. The outer surface of the overflow pipe to the air port is equipped with an absorption tower overflow pipe.

2. The pipeline structure for preventing foaming and pollution of the absorption tower according to claim 1, characterized in that: A valve is installed at the other end of the defoaming tank discharge pipe, the absorption tower overflow pipe can drain the overflow slurry to the pit, and the absorption tower collection pipe collects all the medium entering the tower.

3. The pipeline structure for preventing foaming and pollution of the absorption tower according to claim 1, characterized in that: The defoaming box of the absorption tower collects foam generated when overflow occurs in the absorption tower, and the defoaming box discharge pipe drains the liquid in the collection box to the absorption tower pit. The water sprayed by the shower at one end of the process water pipe is atomized to break the foam and rinse the defoaming box of the absorption tower.

4. The pipeline structure for preventing foaming and pollution of the absorption tower according to claim 1, characterized in that: A sealing ring is installed on the top of the defoaming box of the absorption tower, a telescopic rod is installed on the top of the sealing ring, and limiting strips are installed on the front and back sides of the inner wall of the defoaming box of the absorption tower.

5. The pipeline structure for preventing foaming and pollution of the absorption tower according to claim 4, characterized in that: A movable plate is installed at the telescopic end of the telescopic rod through a fixed plate, and a connecting pipe is installed on the top of the movable plate.

6. The pipeline structure for preventing foaming and pollution of the absorption tower according to claim 5, characterized in that: A plurality of rows of conical thorns are installed at the bottom of the movable plate, and a plurality of rows of nozzles are installed at the bottom of the movable plate.

Images