Energy-saving absorption tower for waste gas treatment

Abstract

The utility model discloses an energy-saving absorption tower for waste gas treatment, which comprises a lower waste gas absorption tower, an upper waste gas absorption tower is fixedly mounted at the top of the lower waste gas absorption tower, and the left side of the inner wall of the lower waste gas absorption tower is fixedly connected with an exhaust pipe and a dosing pipe. The surface of the inner wall of the lower waste gas absorption tower is fixedly connected with a filter cloth screen, a waterproof electric heating drying screen plate, a deodorization filter screen and an activated carbon filter screen plate, the lower waste gas absorption tower is filled with purified water, and the bottom, close to the inner wall of the lower waste gas absorption tower, of the lower waste gas absorption tower is fixedly connected with an overflow water pipe. Through the matching of the structures, the layered waste gas treatment is realized by arranging the lower waste gas absorption tower and the upper waste gas absorption tower, the energy-saving effect is realized by collecting the overflow water resource of the filtered water flow, and the waste gas treatment is realized by virtue of a multi-layer filtering structure and slow multi-directional spraying. And the energy-saving absorption practicability in the waste gas treatment process is indirectly enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an energy-saving absorption tower for waste gas treatment. Background Art

[0002] Chemical plants generate waste gas during production. If it is discharged directly, it will seriously pollute the environment. Therefore, waste gas absorption towers are used. Waste gas treatment mainly adopts waste gas absorption towers. The waste gas absorption tower can utilize the effective components in the waste gas and purify and eliminate the harmful components in the waste gas, so that the gas discharged from the waste gas absorption tower meets the national environmental protection standards;

[0003] For example, an energy-saving absorption tower for waste gas treatment with patent publication number CN202123207354.8 includes a tower body, a packing plate is arranged inside the tower body, and a handle is fixed at one end of the packing plate, limiting grooves are arranged on both sides of the packing plate, and one side inside the limiting groove is fixedly connected to the inner wall of the tower body, spray plates are installed at the top of both sides inside the tower body, an observation window is fixed at the top of one side of the tower body, the installation port is installed at the bottom end of one side of the tower body, a connecting port is arranged inside the installation port, and a connecting pipe is installed on one side of the connecting port;

[0004] Since the above-mentioned energy-saving absorption tower uses spraying to treat the discharged exhaust gas, the particle knocking-off treatment effect in the exhaust gas undergoing spray reaction purification is limited, and the fine particle impurities in the exhaust gas cannot be completely wrapped, which indirectly reduces the purification treatment effect of the exhaust gas and brings certain adverse effects on actual use, so it needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving absorption tower for waste gas treatment, which has the function of treating waste gas in layers by arranging a waste gas absorption lower tower and a waste gas absorption upper tower. Energy saving is achieved by collecting overflow water resources of the filtered water flow, and the waste gas treatment is carried out through a multi-layer filtering structure and slow multi-directional spraying, which indirectly enhances the practicality of energy-saving absorption in the waste gas treatment process, brings certain favorable effects to actual use, and solves the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving absorption tower for waste gas treatment, comprising a waste gas absorption lower tower, a waste gas absorption upper tower is fixedly installed on the top of the waste gas absorption lower tower, an exhaust pipe and a dosing pipe are fixedly connected to the left side of the inner wall of the waste gas absorption lower tower, a filter cloth net, a waterproof electric heating drying screen plate, a deodorizing filter screen, and an activated carbon filter screen are fixedly connected to the surface of the inner wall of the waste gas absorption lower tower, the interior of the waste gas absorption lower tower is filled with clean water, an overflow water pipe is fixedly connected to the bottom of the waste gas absorption lower tower near its inner wall, and a recovery water tank is placed on the left side of the waste gas absorption lower tower The bottom of the waste gas absorption upper tower is fixedly connected with a lower drainage pipe, and the bottom end of the lower drainage pipe passes through the bottom of the filter cloth net, a waste gas delivery pipe is fixedly connected between the front side of the waste gas absorption lower tower and the front side of the waste gas absorption upper tower, a main spray platform is fixedly installed on the top of the inner wall of the waste gas absorption upper tower, an air outlet pipe is fixedly connected to the top of the waste gas absorption upper tower, a connecting pipe is fixedly connected between one end of the air outlet pipe and the top of the waste gas absorption upper tower near its inner wall, a storage water tank with a water pump is fixedly installed on the top of the waste gas absorption lower tower, and the interior of the storage water tank is connected to the interior of the waste gas absorption upper tower through a conduit.

[0007] Preferably, the top end of the exhaust pipe and the top end of the dosing pipe are both located above the activated carbon filter screen, and the bottom end of the exhaust pipe and the bottom end of the dosing pipe are both located below the filter cloth screen.

[0008] Preferably, the filter cloth net is located inside the purified water, and the filter cloth net is located between the bottom pipe ends of the overflow water pipe and the exhaust pipe and the bottom pipe end of the dosing pipe, and the waterproof electric heating drying mesh plate, deodorizing filter mesh, and activated carbon filter mesh plate are located above the overflow water pipe.

[0009] Preferably, a gathering and drainage groove is provided at the bottom of the inner wall of the waste gas absorption upper tower, the inner wall of the gathering and drainage groove is provided with a smooth surface, and the overall shape of the gathering and drainage groove is a U-shape with a downward opening.

[0010] Preferably, a waste gas slow flow plate is fixedly connected to the surface of the inner wall of the waste gas absorption upper tower, and a spray water gun row is fixedly installed on the rear side of the inner wall of the waste gas absorption upper tower, and the spray water gun row is located above the waste gas slow flow plate.

[0011] Preferably, the number of the exhaust gas slow flow plates is at least three, and the openings of the upper exhaust gas slow flow plate and the lower exhaust gas slow flow plate are both located on the right, and the opening of the middle exhaust gas slow flow plate is located on the left.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the lower pipe openings of the exhaust pipe and the dosing pipe are located inside the clean water and below the filter cloth net, so that the exhaust gas in the exhaust pipe can completely enter the inside of the clean water, and the reaction adsorption agent is put into the dosing pipe to enter the inside of the clean water, so that the exhaust gas can react inside the clean water to adsorb the impurity particles in the exhaust gas, and the exhaust gas after the reaction treatment will emerge upward through the filter cloth net, and the treated exhaust gas will pass through the waterproof electric heating drying mesh plate, the deodorizing filter mesh, and the activated carbon filter mesh plate from bottom to top, so as to filter and purify the water, fine particles, odor, etc. contained in the exhaust gas;

[0014] In the utility model, the waste gas after treatment can be supplied from the waste gas absorption lower tower to the waste gas absorption upper tower through the waste gas conveying pipe. The waste gas entering the waste gas absorption upper tower is sprayed with the waste gas through the main spray station and the spray water gun row. Since the main spray station sprays from top to bottom and the spray water gun row sprays front to back, the multi-directional spray purification treatment of the waste gas can be realized. The three waste gas slow flow plates are provided to slow down the flow speed of the waste gas so as to fully purify and absorb the waste gas. The waste gas after the spray purification treatment can be discharged into the exhaust pipe through the connecting pipe, and the absorption treatment, purification and discharge of the waste gas are completed. The water used for spraying will enter the clean water of the waste gas absorption lower tower through the lower drainage pipe. Since an overflow water pipe is provided on the left side of the waste gas absorption lower tower, the excess clean water can be filtered and overflowed into the inside of the recovery water tank for recovery, which saves energy and reduces the waste of water resources while fully absorbing and treating the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the waste gas absorption lower tower in the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the waste gas absorption upper tower in the utility model.

[0018] In the figure: 1. Waste gas absorption lower tower; 2. Waste gas absorption upper tower; 3. Exhaust pipe; 4. Dosing pipe; 5. Filter cloth net; 6. Waterproof electric heating drying mesh plate; 7. Deodorization filter; 8. Activated carbon filter plate; 9. Purified water; 10. Overflow water pipe; 11. Recovery water tank; 12. Lower drainage pipe; 13. Waste gas conveying pipe; 14. Main spray station; 15. Exhaust pipe; 16. Connecting pipe; 17. Storage water tank; 18. Gathering drainage trough; 19. Waste gas slow flow plate; 20. Spray water gun row. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1, please refer to Figures 1 to 3 The utility model provides a technical solution: an energy-saving absorption tower for waste gas treatment, comprising a waste gas absorption lower tower 1, a waste gas absorption upper tower 2 is fixedly installed on the top of the waste gas absorption lower tower 1, an exhaust pipe 3 and a dosing pipe 4 are fixedly connected to the left side of the inner wall of the waste gas absorption lower tower 1, a filter cloth net 5, a waterproof electric heating drying screen plate 6, a deodorizing filter screen 7, and an activated carbon filter screen plate 8 are fixedly connected to the surface of the inner wall of the waste gas absorption lower tower 1, the interior of the waste gas absorption lower tower 1 is filled with clean water 9, an overflow water pipe 10 is fixedly connected to the bottom of the waste gas absorption lower tower 1 near its inner wall, a recovery water tank 11 is placed on the left side of the waste gas absorption lower tower 1, and the waste gas absorption A lower drainage pipe 12 is fixedly connected to the bottom of the upper tower 2, and the bottom end of the lower drainage pipe 12 passes through the bottom of the filter cloth net 5, and an exhaust gas conveying pipe 13 is fixedly connected between the front side of the exhaust gas absorption lower tower 1 and the front side of the exhaust gas absorption upper tower 2. A main spray platform 14 is fixedly installed on the top of the inner wall of the exhaust gas absorption upper tower 2, and an exhaust pipe 15 is fixedly connected to the top of the exhaust gas absorption upper tower 2. A connecting pipe 16 is fixedly connected between one end of the exhaust outlet pipe 15 and the top of the exhaust gas absorption upper tower 2 near its inner wall. A storage water tank 17 with a water pump is fixedly installed on the top of the exhaust gas absorption lower tower 1, and the interior of the storage water tank 17 is connected to the interior of the exhaust gas absorption upper tower 2 through a conduit.

[0021] Furthermore, the top end of the exhaust pipe 3 and the top end of the dosing pipe 4 are both located above the activated carbon filter screen 8 , and the bottom end of the exhaust pipe 3 and the bottom end of the dosing pipe 4 are both located below the filter cloth screen 5 . The filter cloth net 5 is located inside the clean water 9, and the filter cloth net 5 is located between the bottom pipe ends of the overflow water pipe 10 and the exhaust pipe 3 and the bottom pipe end of the dosing pipe 4. The waterproof electric heating drying mesh plate 6, the deodorizing filter screen 7, and the activated carbon filter screen plate 8 are located above the overflow water pipe 10. The lower pipe openings of the exhaust pipe 3 and the dosing pipe 4 are located inside the clean water 9 and below the filter cloth net 5. The exhaust gas in the exhaust pipe 3 can completely enter the inside of the clean water 9, and the reaction adsorption agent is put into the dosing pipe 4 to enter the inside of the clean water 9, so that the exhaust gas can react in the inside of the clean water 9 to adsorb impurity particles in the exhaust gas. The exhaust gas after the reaction treatment will emerge upward through the filter cloth net 5, and the treated exhaust gas will pass through the waterproof electric heating drying mesh plate 6, the deodorizing filter screen 7, and the activated carbon filter screen plate 8 from bottom to top, so as to filter and purify the water, fine particles, odor, etc. contained in the exhaust gas.

[0022] Furthermore, a collecting and draining groove 18 is provided at the bottom of the inner wall of the waste gas absorption upper tower 2. The inner wall of the collecting and draining groove 18 is provided with a smooth surface, and the overall shape of the collecting and draining groove 18 is a downwardly open U-shape. The collecting and draining groove 18 can collect and drain the used water resources.

[0023] Example 2, please refer to Figures 1 to 3 The difference between this embodiment and the embodiment 1 is that: the surface of the inner wall of the waste gas absorption upper tower 2 is fixedly connected with a waste gas slow flow plate 19, and the rear side of the inner wall of the waste gas absorption upper tower 2 is fixedly installed with a spray water gun row 20, and the spray water gun row 20 is located above the waste gas slow flow plate 19. The number of waste gas slow flow plates 19 is at least three, and the openings of the waste gas slow flow plate 19 located at the top and the waste gas slow flow plate 19 located at the bottom are both located on the right, and the opening of the waste gas slow flow plate 19 located in the middle is located on the left. The waste gas enters the waste gas absorption upper tower 2 and passes through the main spray station 14 and the spray water gun row 20 to spray the waste gas. Because the main spray station 14 sprays from top to bottom and the spray water gun row 20 sprays from front to back, multi-directional spray purification treatment of the waste gas can be achieved. The three waste gas slow flow plates 19 are set to slow down the flow speed of the waste gas so as to fully purify and absorb the waste gas.

[0024] Working principle: When the energy-saving absorption tower for waste gas treatment is used, the waste gas discharge pipe can be aligned and sealed to the exhaust pipe 3 according to the waste gas treatment point, so as to discharge the waste gas into the interior of the waste gas absorption lower tower 1. Because the lower pipe openings of the exhaust pipe 3 and the dosing pipe 4 are located in the interior of the clean water 9 and below the filter cloth net 5, the waste gas in the exhaust pipe 3 can completely enter the interior of the clean water 9, and the reaction adsorption agent (such as alum, etc.) is put into the dosing pipe 4 to enter the interior of the clean water 9, so that the waste gas can react in the clean water 9 to adsorb impurity particles in the waste gas. The waste gas after the reaction treatment will emerge upward through the filter cloth net 5. The treated waste gas will pass through the waterproof electric heating drying mesh plate 6, the deodorizing filter mesh 7, and the activated carbon filter mesh plate 8 from bottom to top, and the water, fine particles, odor, etc. contained in the waste gas will be filtered and purified. The treated waste gas will pass through the waste gas conveying pipe 13 After entering the waste gas absorption upper tower 2, the waste gas enters the waste gas absorption upper tower 2 and passes through the main spray station 14 and the spray water gun row 20 to spray the waste gas. Because the main spray station 14 sprays from top to bottom and the spray water gun row 20 sprays front and back, the multi-directional spray purification treatment of the waste gas can be realized. The three waste gas slow flow plates 19 are set to slow down the flow speed of the waste gas so as to fully purify and absorb the waste gas. The waste gas after spray purification treatment can be discharged into the outlet pipe 15 through the connecting pipe 16 to complete the absorption treatment and purification of the waste gas. The water used for spraying will pass through the lower drainage pipe 12 into the clean water 9 of the waste gas absorption lower tower 1. Because an overflow water pipe 10 is set on the left side of the waste gas absorption lower tower 1, the excess clean water 9 can be filtered and overflowed into the recovery water tank 11 for recovery. While fully absorbing and treating the waste gas, energy saving and reduction of water resource waste are achieved, thereby enhancing the energy-saving absorption practicality in the waste gas treatment process.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving absorption tower for waste gas treatment, comprising a waste gas absorption lower tower (1), a waste gas absorption upper tower (2) being fixedly mounted on the top of the waste gas absorption lower tower (1), characterized in that: An exhaust pipe (3) and a dosing pipe (4) are fixedly connected to the left side of the inner wall of the waste gas absorption lower tower (1); a filter cloth net (5), a waterproof electric heating drying screen plate (6), a deodorizing filter screen (7), and an activated carbon filter screen plate (8) are fixedly connected to the surface of the inner wall of the waste gas absorption lower tower (1); the interior of the waste gas absorption lower tower (1) is filled with clean water (9); an overflow water pipe (10) is fixedly connected to the bottom of the waste gas absorption lower tower (1) near its inner wall; a recovery water tank (11) is placed on the left side of the waste gas absorption lower tower (1); a lower drainage pipe (12) is fixedly connected to the bottom of the waste gas absorption upper tower (2), and the bottom end of the lower drainage pipe (12) passes through the filter Below the cloth net (5), a waste gas delivery pipe (13) is fixedly connected between the front side of the waste gas absorption lower tower (1) and the front side of the waste gas absorption upper tower (2); a main spraying platform (14) is fixedly installed on the top of the inner wall of the waste gas absorption upper tower (2); an air outlet pipe (15) is fixedly connected to the top of the waste gas absorption upper tower (2); a connecting pipe (16) is fixedly connected between one end of the air outlet pipe (15) and the top of the waste gas absorption upper tower (2) near its inner wall; a storage water tank (17) with a water pump is fixedly installed on the top of the waste gas absorption lower tower (1); the interior of the storage water tank (17) is connected to the interior of the waste gas absorption upper tower (2) through a conduit.

2. The energy-saving absorption tower for waste gas treatment according to claim 1, characterized in that: The top pipe end of the exhaust pipe (3) and the top pipe end of the dosing pipe (4) are both located above the activated carbon filter screen (8), and the bottom pipe end of the exhaust pipe (3) and the bottom pipe end of the dosing pipe (4) are both located below the filter cloth screen (5).

3. The energy-saving absorption tower for waste gas treatment according to claim 1, characterized in that: The filter cloth net (5) is located inside the clean water (9), and the filter cloth net (5) is located between the overflow water pipe (10) and the bottom pipe end of the exhaust pipe (3) and the bottom pipe end of the dosing pipe (4), and the waterproof electric heating drying screen plate (6), the deodorizing filter screen (7), and the activated carbon filter screen plate (8) are located above the overflow water pipe (10).

4. The energy-saving absorption tower for waste gas treatment according to claim 1, characterized in that: A gathering and drainage groove (18) is provided at the bottom of the inner wall of the waste gas absorption upper tower (2); the inner wall of the gathering and drainage groove (18) is provided with a smooth surface, and the overall shape of the gathering and drainage groove (18) is a U-shape with a lower opening.

5. The energy-saving absorption tower for waste gas treatment according to claim 1, characterized in that: A waste gas slow flow plate (19) is fixedly connected to the surface of the inner wall of the waste gas absorption upper tower (2), and a spray water gun row (20) is fixedly installed on the rear side of the inner wall of the waste gas absorption upper tower (2), and the spray water gun row (20) is located above the waste gas slow flow plate (19).

6. The energy-saving absorption tower for waste gas treatment according to claim 5, characterized in that: The number of the exhaust gas slow flow plates (19) is at least three, and the openings of the exhaust gas slow flow plates (19) located at the top and the exhaust gas slow flow plates (19) located at the bottom are both located on the right side, and the opening of the exhaust gas slow flow plate (19) located in the middle is located on the left side.

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