VOCs (Volatile Organic Compounds) spraying absorption tower

Abstract

The utility model provides a VOCs spraying absorption tower, relates to VOCs spraying absorption tower field, including: VOCs absorption tower body, upper layer spraying plate and lower layer spraying plate, VOCs absorption tower body inner side tower wall is welded with upper layer spraying plate and lower layer spraying plate, VOCs absorption tower body inner side middle part is provided with the cleaning rotary rod, VOCs absorption tower body inner side middle part is provided with the cleaning rotary rod. A stepping motor is connected to the upper end of the cleaning rotating rod, cleaning brushes are connected to the surface of the cleaning rotating rod through a coupling block, an upper-layer filler screen frame and a lower-layer filler screen frame are clamped to the inner side of the VOCs absorption tower body through connecting ring plates, and the cleaning brushes are symmetrically distributed in filler on the inner sides of the upper-layer filler screen frame and the lower-layer filler screen frame. The utility model solves the problems that when the packing layer in the absorption tower is blocked in the prior art, the packing loss is easily increased and the VOCs waste gas treatment efficiency is reduced due to direct replacement of the packing.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs spray absorption towers, and particularly relates to a VOCs spray absorption tower. Background Art

[0002] A VOCs spray absorption tower is a waste gas treatment device specifically used for treating volatile organic compounds (VOCs). It belongs to the field of volatile gas treatment facilities in enterprises such as coking and chemical industries, aiming to solve the problem that there is no special equipment to treat the volatile gases in the chemical product recovery workshop of existing coking plants. After retrieval, in the prior art (application number: CN202121383644.5), a VOCS treatment absorption tower is described. It is recorded in the text that "after the packing layer and the activated carbon layer are used for a period of time, they need to be replaced. By opening the movable door and pulling the handle to drive the placement box to be taken out, the replacement can be carried out. The waste gas is purified and absorbed multiple times, making the absorption effect of the treated absorption tower body more excellent, facilitating the recycling of the waste gas purifying agent, reducing energy waste, facilitating the replacement of the filler used for a period of time, and making the replacement more convenient". However, when the packing layer in the absorption tower of the prior art is blocked, directly replacing the packing easily increases the packing loss and reduces the treatment efficiency of VOCs waste gas. Content of the Utility Model

[0003] In order to overcome the defects existing in the prior art, a VOCs spray absorption tower is provided herein to solve the problem that when the packing layer in the absorption tower of the prior art is blocked, directly replacing the packing easily increases the packing loss and reduces the treatment efficiency of VOCs waste gas.

[0004] To achieve the above object, a VOCs spray absorption tower is provided, including: a VOCs absorption tower body and an upper spray plate. The inner tower wall of the VOCs absorption tower body is welded with an upper spray plate and a lower spray plate.

[0005] A cleaning rotating rod is arranged in the middle inside the VOCs absorption tower body. The upper end of the cleaning rotating rod is connected with a stepping motor. The surface of the cleaning rotating rod is connected with a cleaning brush through a shaft connecting block. The inner side of the VOCs absorption tower body is respectively clamped with an upper packing mesh frame and a lower packing mesh frame through an adapter ring plate. The cleaning brushes are symmetrically distributed in the packing inside the upper packing mesh frame and the lower packing mesh frame.

[0006] Further, a waste liquid pipe is arranged at the lower end of the VOCs absorption tower body. The left end of the VOCs absorption tower body is connected with an air inlet pipe. Two groups of adapter ring plates are welded inside the VOCs absorption tower body.

[0007] Furthermore, a gas flow rate monitor is embedded and installed on the side wall at the upper end of the VOCs absorption tower body. A demister is installed at the upper port of the VOCs absorption tower body, and an exhaust pipe is connected to the right side at the upper end of the VOCs absorption tower body.

[0008] Furthermore, a porous cover plate is fixed on the surface of the cleaning rotating rod; and the porous cover plate covers the upper ends of the upper packing mesh frame and the lower packing mesh frame. An axially connected block is fixedly sleeved on the surface of the cleaning rotating rod.

[0009] Furthermore, internally threaded groove blocks are welded to the left and right sides of the axially connected block; and the ends of the cleaning brushes are connected to the grooves of the internally threaded groove blocks. Nozzles are installed on the inner sides of the upper spray plate and the lower spray plate.

[0010] Furthermore, a sealing pressure plate is fixedly connected to the front tower surface of the VOCs absorption tower body through fastening bolts, and the rear side of the sealing pressure plate is closely attached to the front end surfaces of the upper packing mesh frame and the lower packing mesh frame through a sealing gasket.

[0011] Furthermore, the cleaning rotating rod, the stepping motor, the cleaning brush, and the axially connected block constitute a packing brushing mechanism of the VOCs absorption tower body.

[0012] The beneficial effects of the present utility model are as follows. The VOCs spray absorption tower of the present utility model uses the axially connected block to connect the cleaning rotating rod and the cleaning brush inside the packing mesh frame. The cleaning rotating rod is driven by the stepping motor to drive the cleaning brush to rotate, so as to brush the porous packing inside the packing mesh frame, facilitating the cleaning of impurities on the surface of the porous packing, making it easier for the VOCs waste gas to flow upward smoothly, reducing the degree of packing blockage inside the VOCs spray absorption tower, extending the service life of the packing inside the VOCs spray absorption tower and saving the packing loss cost, and improving the reaction absorption efficiency of the VOCs spray absorption tower. Description of the Drawings

[0013] Figure 1 It is a front view sectional structure schematic diagram of the VOCs spray absorption tower according to an embodiment of the present utility model.

[0014] Figure 2 It is a top view sectional connection structure schematic diagram of the VOCs spray absorption tower and the upper packing mesh frame according to an embodiment of the present utility model.

[0015] Figure 3 It is a front view sectional structure schematic diagram of the cleaning rotating rod and the upper packing mesh frame according to an embodiment of the present utility model.

[0016] Figure 4 It is a three-dimensional structure schematic diagram of the axially connected block according to an embodiment of the present utility model.

[0017] In the figure: 1. VOCs absorption tower body; 11. connecting ring plate; 12. air inlet pipe; 13. waste liquid pipe; 14. gas flow rate monitor; 15. exhaust pipe; 2. cleaning rotating rod; 21. stepping motor; 22. porous cover plate; 23. cleaning brush; 24. shaft connection block; 25. internal thread groove block; 3. demister; 4. upper spray plate; 41. nozzle; 42. lower spray plate; 5. upper packing mesh frame; 51. lower packing mesh frame; 6. sealing pressure plate; 61. fastening bolts; 62. sealing gasket. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a VOCs spray absorption tower, comprising: a VOCs absorption tower body 1, an upper spray plate 4 and a lower spray plate 42, wherein the upper spray plate 4 and the lower spray plate 42 are welded to the inner wall of the VOCs absorption tower body 1.

[0019] A cleaning rotating rod 2 is arranged in the middle of the inner side of the VOCs absorption tower body 1, and a stepping motor 21 is connected to the upper end of the cleaning rotating rod 2. A cleaning brush 23 is connected to the surface of the cleaning rotating rod 2 through an axial connection block 24. An upper filling mesh frame 5 and a lower filling mesh frame 51 are respectively clamped on the inner side of the VOCs absorption tower body 1 through a connecting ring plate 11, and the cleaning brushes 23 are symmetrically distributed in the inner fillings of the upper filling mesh frame 5 and the lower filling mesh frame 51.

[0020] When in use, the VOCs waste gas is introduced into the VOCs absorption tower body 1, so that the waste gas passes through the lower packing mesh frame 51 and the lower spray plate 42 for preliminary reaction, and then circulates to the upper packing mesh frame 5 and the upper spray plate 4 for further reaction to ensure that the VOCs waste gas reacts fully. The VOCs waste gas after reaction is discharged from the exhaust pipe 15 into the tower. When the VOCs absorption tower body 1 reacts, the stepper motor 21 drives the cleaning rotating rod 2 to drive the cleaning brush 23 located in the upper packing mesh frame 5 and the lower packing mesh frame 51 to rotate, and brush the packing in the upper packing mesh frame 5 and the lower packing mesh frame 51, so as to facilitate the cleaning of impurities on the surface of the porous packing, facilitate the VOCs waste gas to flow upward more smoothly, reduce the blockage degree of the packing in the VOCs spray absorption tower, extend the service life of the packing in the VOCs spray absorption tower, save the cost of packing loss, and improve the reaction and absorption efficiency of the VOCs spray absorption tower.

[0021] In this embodiment, a waste liquid pipe 13 is provided at the lower end of the VOCs absorption tower body 1, an air inlet pipe 12 is connected to the left end of the VOCs absorption tower body 1, and two sets of connecting ring plates 11 are welded inside the VOCs absorption tower body 1. A gas flow rate monitor 14 is embedded in the side wall of the upper end of the VOCs absorption tower body 1, a demister 3 is installed at the upper port of the VOCs absorption tower body 1, and an exhaust pipe 15 is connected to the right side of the upper end of the VOCs absorption tower body 1.

[0022] As a preferred embodiment, the waste liquid pipe 13 facilitates the discharge of the waste liquid after the reaction in the VOCs absorption tower body 1. The gas flow rate monitor 14 facilitates the monitoring of the flow rate of the gas inside the VOCs absorption tower body 1, making it convenient to know the degree of packing blockage, and facilitating the timely replacement of the packing in the upper packing mesh frame 5 and the lower packing mesh frame 51.

[0023] In this embodiment, a porous cover plate 22 is fixed on the rod surface of the cleaning rotating rod 2; and the porous cover plate 22 is connected to the upper ends of the upper packing mesh frame 5 and the lower packing mesh frame 51 in a covering manner. An axially connected block 24 is sleeved and fixed on the rod surface of the cleaning rotating rod 2. Inner threaded groove blocks 25 are welded on the left and right sides of the axially connected block 24; and the end of the cleaning brush 23 is connected to the inside of the inner threaded groove block 25. Nozzles 41 are installed on the inner sides of the upper spray plate 4 and the lower spray plate 42.

[0024] As a preferred embodiment, the porous cover plate 22 facilitates preventing the packing from running out of the packing mesh frame from the upper end when the cleaning brush 23 rotates and brushes. The addition of the packing in the packing mesh frame cannot be too slow, and the amount of packing in the frame allows the cleaning brush 23 to rotate normally. Notches are provided on the rear frame surfaces of the upper packing mesh frame 5 and the lower packing mesh frame 51, facilitating the normal extraction and insertion of the packing mesh frames. The upper spray plate 4 and the lower spray plate 42 spray the solution through the nozzles 41 to react with the VOCs waste gas, purifying the harmful substances in the VOCs waste gas.

[0025] In this embodiment, a sealing pressure plate 6 is fixedly connected to the front tower surface of the VOCs absorption tower body 1 through fastening bolts 61, and the rear side of the sealing pressure plate 6 is closely attached to the front end surfaces of the upper packing mesh frame 5 and the lower packing mesh frame 51 through a sealing gasket 62.

[0026] As a preferred embodiment, the sealing pressure plate 6 is located at the front side of the upper packing mesh frame 5 and the lower packing mesh frame 51, facilitating sealing and pressing the upper packing mesh frame 5 and the lower packing mesh frame 51 tightly inside the VOCs absorption tower body 1. When it is necessary to replace the packing in the packing mesh frame, the sealing pressure plate 6 can be removed, and the upper packing mesh frame 5 and the lower packing mesh frame 51 can be extracted from the tower.

[0027] In this embodiment, the cleaning rotating rod 2, the stepping motor 21, the cleaning brush 23, and the axially connected block 24 constitute the packing brushing mechanism of the VOCs absorption tower body 1.

[0028] As a preferred embodiment, the packing brushing mechanism of the VOCs absorption tower body 1 facilitates cleaning the impurities on the surface of the porous packing, making it convenient for the VOCs waste gas to flow upward more smoothly, reducing the degree of packing blockage in the VOCs spray absorption tower, extending the service life of the packing in the VOCs spray absorption tower, and saving the packing loss cost.

[0029] The VOCs spray absorption tower of the present utility model can effectively solve the problems in the prior art that when the packing layer in the absorption tower is blocked, directly replacing the packing easily increases the packing loss and reduces the treatment efficiency of VOCs waste gas. It is convenient to clean the impurities on the surface of the porous packing, facilitates the smoother upward flow of VOCs waste gas, reduces the degree of packing blockage in the VOCs spray absorption tower, extends the service life of the packing in the VOCs spray absorption tower and saves the packing loss cost, improves the reaction absorption efficiency of the VOCs spray absorption tower, and is applicable to the VOCs spray absorption tower.

Claims

1. A VOCs spray absorption tower, comprising: VOCs absorption tower body (1); an upper spray plate (4) and a lower spray plate (42) are welded to the inner tower wall of the VOCs absorption tower body (1), characterized in that: A cleaning rotating rod (2) is arranged in the middle of the inner side of the VOCs absorption tower body (1); the upper end of the cleaning rotating rod (2) is connected to a stepping motor (21); the surface of the cleaning rotating rod (2) is connected to a cleaning brush (23) via a shaft connection block (24); an upper filler mesh frame (5) and a lower filler mesh frame (51) are respectively clamped to the inner side of the VOCs absorption tower body (1) via a connecting ring plate (11); and the cleaning brushes (23) are symmetrically distributed in the inner fillers of the upper filler mesh frame (5) and the lower filler mesh frame (51).

2. A VOCs spray absorption tower according to claim 1, characterized in that: A waste liquid pipe (13) is arranged at the lower end of the VOCs absorption tower body (1), an air inlet pipe (12) is connected to the left end of the VOCs absorption tower body (1), and two groups of connecting ring plates (11) are welded inside the VOCs absorption tower body (1).

3. A VOCs spray absorption tower according to claim 1, characterized in that: A gas flow rate monitor (14) is embedded in the side wall of the upper end of the VOCs absorption tower body (1), a demister (3) is installed at the upper port of the VOCs absorption tower body (1), and an exhaust pipe (15) is connected to the right side of the upper end of the VOCs absorption tower body (1).

4. A VOCs spray absorption tower according to claim 1, characterized in that: The rod surface of the cleaning rotating rod (2) is fixed with a porous cover plate (22); the porous cover plate (22) covers the upper ends of the upper filling mesh frame (5) and the lower filling mesh frame (51); and the rod surface of the cleaning rotating rod (2) is sleeved and fixed with a shaft connection block (24).

5. A VOCs spray absorption tower according to claim 4, characterized in that: The left and right sides of the shaft connection block (24) are welded with internal thread groove blocks (25); the internal thread groove block (25) is connected to the end of the cleaning brush (23); and the inner side surfaces of the upper spray plate (4) and the lower spray plate (42) are installed with spray heads (41).

6. A VOCs spray absorption tower according to claim 1, characterized in that: The front tower surface of the VOCs absorption tower body (1) is fixedly connected to a sealing plate (6) via fastening bolts (61), and the rear side of the sealing plate (6) is tightly attached to the front end surfaces of the upper packing mesh frame (5) and the lower packing mesh frame (51) via a sealing gasket (62).

7. A VOCs spray absorption tower according to claim 1, characterized in that: The cleaning rotating rod (2), the stepping motor (21), the cleaning brush (23) and the shaft connection block (24) constitute a filler brushing mechanism of the VOCs absorption tower body (1).

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