VOCs (volatile organic compounds) recovery tower for tail gas of methanol storage tank

Abstract

The utility model discloses a methanol storage tank tail gas VOCs recovery tower, and relates to the technical field of tail gas VOCs recovery towers, the methanol storage tank tail gas VOCs recovery tower comprises a tower body, an aeration disc is installed on the inner bottom side of the tower body, a pressure pump is installed on the inner bottom side of the tower body, a liquid delivery pipe is installed on the upper side of the pressure pump, and spray pipes are installed along the vertical direction of the liquid delivery pipe at equal intervals. Through the arrangement of the spray pipe, the spray head, the liquid feeding pipe, the pressure pump, the condensation screen plate, the gas inlet pipe and the activated carbon plate, volatile organic compounds in tail gas can be firstly absorbed by activated carbon, then are exposed from absorption liquid at the inner bottom of the recovery tower, and are fully contacted and absorbed upwards with vaporific absorption liquid sprayed by the spray head; and finally, the tail gas is in contact with a condensation net plate to condense and separate organic matters, so that the volatile organic matters fall into the absorption liquid, the volatile organic matters in the tail gas are effectively absorbed and treated, and the organic matters are prevented from being discharged into air to cause pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas VOCs recovery towers, in particular to a methanol storage tank tail gas VOCs recovery tower. Background Art

[0002] Methanol storage tanks can store methanol gas. During the release of methanol gas, the tail gas in the tank will be discharged into the air along with the methanol, causing pollution. The volatile organic compounds in the methanol tail gas will cause atmospheric pollution when they are discharged into the atmosphere, so a recovery structure is needed to recover the volatile organic compounds in the tail gas.

[0003] When the existing methanol storage tank tail gas volatile organic compound recovery tower is in use, the gas adsorption recovery inside the tower body is only carried out by blowing the tail gas into the absorption liquid for absorption treatment, so that some volatile organic compounds in the tail gas cannot be effectively absorbed, thereby causing pollution. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a methanol storage tank tail gas VOCs recovery tower. Through the arranged nozzles, nozzles, liquid delivery pipes, pressure pumps, condensation mesh plates, air inlet pipes and activated carbon plates, the volatile organic matter in the tail gas can be first absorbed by the activated carbon, and then exposed from the absorption liquid at the bottom of the recovery tower and fully contacted and absorbed with the mist absorption liquid sprayed from the nozzle upwards, and finally contacted with the condensation mesh plate to condense and separate the organic matter, so that the volatile organic matter falls into the absorption liquid, and then the volatile organic matter in the tail gas is effectively absorbed and treated, and the organic matter is prevented from being discharged into the air to cause pollution, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a methanol storage tank tail gas VOCs recovery tower, comprising a tower body, an aeration plate is installed on the bottom side of the tower body, a pressure pump is installed on the bottom side of the tower body, a liquid delivery pipe is installed on the upper side of the pressure pump, nozzles are installed at equal intervals along the vertical direction of the liquid delivery pipe, nozzles are installed at equal intervals on the lower side of the nozzle, a condensation mesh is installed on the top side of the tower body, an air inlet pipe is arranged on one side of the lower part of the tower body, an activated carbon plate is installed on the inner side of the air inlet pipe, and a circulation pump is connected to the lower side of the condensation mesh through a pipeline.

[0006] Furthermore, an air outlet pipe is installed on the top of the tower body, and a maintenance door is connected to the outer side of the tower body through a hinge.

[0007] Furthermore, the air outlet pipe is connected to the tower body via a flange, and the condensation mesh plate is connected to the inner side of the tower body via a slot.

[0008] Furthermore, the nozzle is connected to the inner side of the tower body through a pipe clamp, and the nozzle is connected to the nozzle through threads.

[0009] Furthermore, the air inlet pipe is welded to the tower body, and the nozzles are arranged in a cross shape.

[0010] Furthermore, the nozzles are staggered between upper and lower adjacent layers.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model arranges a nozzle, a nozzle, a liquid delivery pipe, a pressure pump, a condensation mesh plate, an air intake pipe and an activated carbon plate, so that the volatile organic matter in the tail gas can be first absorbed by the activated carbon, then exposed from the absorption liquid at the bottom of the recovery tower to be fully contacted and absorbed by the mist absorption liquid sprayed from the nozzle, and finally contacted with the condensation mesh plate to condense and separate the organic matter, so that the volatile organic matter falls into the absorption liquid, thereby effectively absorbing and treating the volatile organic matter in the tail gas, and preventing the organic matter from being discharged into the air and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the tower body in the utility model;

[0015] Figure 3 It is a schematic diagram of the top view of the nozzle and the nozzle in the utility model;

[0016] Figure 4 It is a schematic diagram of the top view structure of the condensation screen plate in the utility model.

[0017] In the figure: 1. tower body; 2. air inlet pipe; 3. air outlet pipe; 4. aeration plate; 5. pressure pump; 6. liquid delivery pipe; 7. nozzle; 8. nozzle; 9. maintenance door; 10. condensation screen; 11. circulation pump; 12. activated carbon plate. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4The present embodiment provides a technical solution: a methanol storage tank tail gas VOCs recovery tower, comprising a tower body 1, an aeration plate 4 is installed on the bottom side of the tower body 1, a pressure pump 5 is installed on the bottom side of the tower body 1, a liquid delivery pipe 6 is installed on the upper side of the pressure pump 5, nozzles 7 are installed at equal intervals along the vertical direction of the liquid delivery pipe 6, and nozzles 8 are installed at equal intervals on the lower side of the nozzle 7, a condensation mesh plate 10 is installed on the top side of the tower body 1, an air inlet pipe 2 is arranged on one side of the lower part of the tower body 1, an activated carbon plate 12 is installed on the inner side of the air inlet pipe 2, and a circulation pump 11 is connected to the lower side of the condensation mesh plate 10 through a pipeline.

[0020] like Figure 1-4 As shown, the circulation pump 11 can transport the circulating cooling water to the condensation mesh plate 10, so that the volatile organic matter is condensed into liquid after contacting the condensation mesh plate 10 and falls into the bottom side of the tower body 1, so that the volatile organic matter is absorbed. The mist absorption liquid sprayed by the nozzle 8 on the lower side of the nozzle 7 can completely cover the area of ​​the cross-section of the tower body 1, avoiding leaks when the exhaust gas moves to the upper side of the tower body 1, and thus the exhaust gas cannot be effectively absorbed and processed. The four-layer nozzle 7 is staggered when it is set up, and the upper and lower layers of the nozzle 7 are staggered by thirty degrees, so that the spray range of the nozzle 7 and the nozzle 8 can completely cover the inside of the tower body 1, ensuring that the volatile gas is effectively recovered and processed.

[0021] An air outlet pipe 3 is installed on the top of the tower body 1, and a maintenance door 9 is connected to the outer side of the tower body 1 through a hinge.

[0022] like Figure 1-2 As shown, after the maintenance door 9 is opened, the inside of the tower body 1 can be maintained, and the air outlet pipe 3 can be connected to the exhaust fan to extract and discharge the treated exhaust gas.

[0023] The air outlet pipe 3 is connected to the tower body 1 through a flange, and the condensation mesh plate 10 is connected to the inner side surface of the tower body 1 through a slot.

[0024] The nozzle 7 is connected to the inner side of the tower body 1 through a pipe clamp, and the nozzle 7 is connected to the nozzle 8 through threads.

[0025] The air inlet pipe 2 is welded to the tower body 1, and the nozzle 7 is arranged in a cross shape.

[0026] The nozzles 7 are staggered between upper and lower adjacent layers.

[0027] The working principle of a methanol storage tank tail gas VOCs recovery tower provided by the utility model is as follows: Figure 1-Figure 4As shown, when the tail gas needs to be treated, the tail gas is sent into the aeration plate 4 through the air inlet pipe 2, and the activated carbon plate 12 in the air inlet pipe 2 can perform initial adsorption and recovery on the tail gas. Then, after aeration through the aeration plate 4, the tail gas flows upward from the absorption liquid on the bottom side of the tower body 1, so that the tail gas contacts and absorbs the absorption liquid, and the absorbed tail gas continues to move upward. The pressure pump 5 can pressurize the absorption liquid and spray it downward through the nozzle 7 and the nozzle 8. The spraying range can completely cover the cross-section of the tower body 1, so that the tail gas contacts and absorbs the mist-like absorption liquid again when flowing upward, thereby improving the recovery efficiency. The tail gas after the absorption liquid recovery continues to move upward, and the circulation pump 11 pumps the condensed water into the condensation mesh plate 10. After the tail gas contacts the condensation mesh plate 10, the volatile organic matter condenses and falls into the absorption liquid on the bottom side of the tower body 1 and is absorbed again, thereby improving the recovery efficiency of the volatile organic matter and preventing the volatile organic matter in the tail gas from entering the atmosphere and causing pollution.

[0028] 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 methanol storage tank tail gas VOCs recovery tower, comprising a tower body (1), characterized in that: An aeration plate (4) is installed on the inner bottom side of the tower body (1), a pressure pump (5) is installed on the inner bottom side of the tower body (1), a liquid delivery pipe (6) is installed on the upper side of the pressure pump (5), nozzles (7) are installed at equal intervals along the vertical direction of the liquid delivery pipe (6), and nozzles (8) are installed at equal intervals on the lower side of the nozzles (7), a condensation mesh plate (10) is installed on the inner top side of the tower body (1), an air inlet pipe (2) is provided on one side of the lower part of the tower body (1), an activated carbon plate (12) is installed on the inner side of the air inlet pipe (2), and the lower side of the condensation mesh plate (10) is connected to a circulation pump (11) through a pipeline.

2. A methanol storage tank tail gas VOCs recovery tower according to claim 1, characterized in that: An air outlet pipe (3) is installed on the top of the tower body (1), and a maintenance door (9) is connected to the outer side of the tower body (1) via a hinge.

3. A methanol storage tank tail gas VOCs recovery tower according to claim 2, characterized in that: The air outlet pipe (3) is connected to the tower body (1) via a flange, and the condensation mesh plate (10) is connected to the inner side surface of the tower body (1) via a slot.

4. A methanol storage tank tail gas VOCs recovery tower according to claim 1, characterized in that: The nozzle (7) is connected to the inner side surface of the tower body (1) via a pipe clamp, and the nozzle (7) is connected to the nozzle head (8) via threads.

5. A methanol storage tank tail gas VOCs recovery tower according to claim 1, characterized in that: The air inlet pipe (2) is welded to the tower body (1), and the nozzles (7) are arranged in a cross shape.

6. A methanol storage tank tail gas VOCs recovery tower according to claim 1, characterized in that: The nozzles (7) are staggered between upper and lower adjacent layers.

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