Spray cleaning device for metallurgical gas CO2 absorption tower wire mesh demister

Abstract

The utility model belongs to the technical field of cleaning devices, and particularly discloses a spray cleaning device for a metallurgical gas CO2 absorption tower wire mesh demister, which comprises an absorption tower, a gas inlet, a gas outlet and a solution inlet are arranged on the absorption tower, the wire mesh demister is arranged in the absorption tower, a spray component is arranged on the absorption tower and is positioned below the wire mesh demister, and the spray cleaning device is arranged on the absorption tower. The spraying assembly comprises a cleaning liquid storage tank, a spraying ring pipe, a spraying header pipe, spraying branch pipes and nozzles; and a booster pump is arranged on a pipeline for communicating the spraying ring pipe with the cleaning liquid storage tank. In order to solve the problem that in the prior art, a machine needs to be stopped to clean the wire mesh demister, the cleaning device is arranged below the wire mesh demister, so that the effects of cleaning the wire mesh demister and preventing the wire mesh demister from being blocked are achieved, and the problem that the wire mesh demister cannot be blocked due to the fact that the wire mesh demister cannot be cleaned when being cleaned is solved. And the cleaning efficiency is low and the production schedule is influenced when the equipment needs to be shut down and then is manually cleaned.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, specifically to a spray cleaning device for a wire mesh demister in a metallurgical gas CO2 absorption tower. Background Technology

[0002] An absorption tower is an environmentally friendly device used for gas treatment, primarily for removing carbon dioxide from gas mixtures. It is widely used in chemical, power, and metallurgical industries. An absorption tower mainly consists of a tower body, packing layer, wire mesh demister, desiccant, and adsorption components. Its working principle is based on absorption, where a liquid absorbent comes into contact with the carbon dioxide-containing gas inside the tower, causing the carbon dioxide to dissolve in the liquid, thereby purifying the gas.

[0003] A wire mesh demister is a highly efficient gas-liquid separation device, typically installed at the top of an absorption tower. It mainly consists of wire mesh, wire mesh grids forming a mesh block, and a support device to fix the mesh block. It is used to separate liquid droplets entrained in the gas within the absorption tower, ensuring mass transfer efficiency, reducing the loss of valuable materials, and improving the operation of the downstream compressor. Its working principle involves the fine filaments on the mesh. Utilizing the inertia of rising droplets, the droplets collide with and adhere to the surface of the filaments. Then, through diffusion and gravity settling, larger droplets are formed and eventually separate from the filaments and fall. This device can effectively remove droplets with a diameter of 3µm-5µm and features a simple structure, small size, high demisting efficiency, low resistance, and light weight.

[0004] However, after prolonged use, dirt easily accumulates on the wire mesh demister, causing it to become clogged and resulting in a decrease in demister efficiency. Furthermore, since most wire mesh demisters are fixedly installed, clogged demisters are not easy to unclog and usually require periodic shutdowns for manual cleaning, which is not only inefficient but also affects production progress.

[0005] Therefore, in order to solve the above problems, a spray cleaning device for wire mesh demisters in metallurgical gas CO2 absorption towers is provided. This device solves the problem that cleaning the wire mesh demisters requires the equipment to be shut down and the cleaning operation to be carried out manually, which results in low cleaning efficiency and affects the production schedule. Utility Model Content

[0006] The purpose of this invention is to provide a spray cleaning device for wire mesh demisters in metallurgical gas CO2 absorption towers, so as to solve the problem that cleaning wire mesh demisters in the existing technology requires shutdown, which is not only inefficient but also affects the production schedule.

[0007] To achieve the above objectives, the basic solution provided by this utility model is as follows: a spray cleaning device for a wire mesh demister in a metallurgical gas CO2 absorption tower, comprising an absorption tower, an air inlet, an air outlet, and a solution inlet; a wire mesh demister located at the top of the absorption tower; a spray assembly located below the wire mesh demister; the spray assembly including a cleaning liquid storage tank connected to a spray ring pipe surrounding the outside of the absorption tower; a booster pump connected to the pipe connecting the spray ring pipe and the cleaning liquid storage tank; a main spray pipe extending into the absorption tower; and several branch spray pipes connected to the main spray pipe, each branch spray pipe equipped with a nozzle.

[0008] The working principle of this utility model is as follows: when it is necessary to clean the wire mesh demister, first turn on the booster pump so that the cleaning liquid in the cleaning liquid storage tank enters the spray ring pipe, and then enters the spray main pipe and is sprayed out from the nozzle through the spray branch pipe, so as to clean the wire mesh demister.

[0009] The beneficial effects of this utility model are as follows: This utility model achieves the cleaning of the wire mesh demister by setting a spray cleaning device below the wire mesh demister. This design allows the wire mesh demister to be cleaned without stopping the equipment, avoiding the problems of low cleaning efficiency and production progress caused by stopping the machine for cleaning.

[0010] Option 2, which is a preferred option of the basic option, is that a pressure sensor is installed at the top of the absorption tower; the pressure sensor can monitor the pressure value inside the absorption tower in real time and can promptly remind the staff to turn on the cleaning device to clean the wire mesh demister.

[0011] Option 3, which is a preferred option of the basic option, is equipped with a flow regulating valve on the pipe connecting the spray ring pipe and the cleaning fluid storage tank; the staff can adjust the flow rate of the cleaning fluid according to the needs to avoid waste.

[0012] Option 4, which is a preferred option of the basic option, is a solenoid valve, and the flow regulating valve is electrically connected to a PLC controller; the PLC controller can realize remote control and is easy to operate.

[0013] Option 5, a preferred option of the basic option, is that the pressure sensor and the PLC controller are electrically connected, and the booster pump and the PLC controller are also electrically connected. When the pressure sensor detects that the pressure inside the absorption tower reaches a preset threshold, the flow regulating valve and the booster pump can be remotely activated through the PLC controller to clean the wire mesh demister in a timely manner.

[0014] Option 6, which is a preferred option of the basic option, is a fan-shaped wide-angle nozzle; the fan-shaped wide-angle nozzle can uniformly cover a large area, thereby improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of a spray cleaning device for a wire mesh demister in a metallurgical gas CO2 absorption tower according to this utility model.

[0016] Figure 2 This is a top view of the spray component in a spray cleaning device for a wire mesh demister in a metallurgical gas CO2 absorption tower according to this utility model.

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: 1. Absorption tower; 2. Air inlet; 3. Air outlet; 4. Solution inlet; 5. Wire mesh demister; 6. Cleaning solution storage tank; 7. Spray ring pipe; 8. Booster pump; 9. Spray main pipe; 10. Spray branch pipe; 11. Nozzle; 12. Pressure sensor; 13. Flow regulating valve.

[0020] like Figures 1 to 3 The following is a spray cleaning device for a wire mesh demister in a metallurgical gas CO2 absorption tower: The device includes an absorption tower 1 with an air inlet 2, an air outlet 3, and a solution inlet 4. A pressure sensor 12 is installed at the top of the absorption tower 1, and a PLC controller is electrically connected to the pressure sensor 12. A wire mesh demister 5 is installed at the top of the absorption tower 1 and is located inside the absorption tower 1. A spray assembly is installed on the absorption tower 1 below the wire mesh demister 5. The spray assembly includes a cleaning liquid storage tank 6. A spray ring pipe 7 is connected to the top of the absorption tower 1. The spray ring pipe 7 surrounds the outside of the absorption tower 1. A booster pump 8 and a flow regulating valve 13 are installed on the pipe connecting the spray ring pipe 7 and the cleaning liquid storage tank 6. The flow regulating valve 13 is a solenoid valve. Both the booster pump 8 and the flow regulating valve 13 are electrically connected to the PLC controller. A spray main pipe 9 is connected to the spray ring pipe 7. The spray main pipe 9 extends into the interior of the absorption tower 1. Several spray branch pipes 10 are connected to the spray main pipe 9. The spray branch pipes 10 are equipped with nozzles 11. The nozzles 11 are fan-shaped wide-angle nozzles.

[0021] The implementation method of this embodiment is as follows: While the absorption tower 1 removes CO2, the pressure sensor 12 on the absorption tower 1 monitors the pressure inside the absorption tower 1 in real time. When the pressure value reaches the set threshold, the wire mesh demister needs to be cleaned. First, the flow regulating valve 13 and the booster pump 8 are turned on by the PLC controller, so that the cleaning liquid in the cleaning liquid storage tank 6 enters the spray ring pipe 7, and then enters the spray main pipe 9 and is sprayed out from the nozzle 11 through the spray branch pipe 10, so as to clean the wire mesh demister 5. After cleaning, the booster pump 8 and the flow regulating valve 13 are turned off by the PLC controller.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A spray cleaning device for a wire mesh demister of a metallurgical gas CO2 absorption column, characterized in that, The utility model relates to an improved absorption tower, which comprises an absorption tower (1) provided with an air inlet (2), an air outlet (3) and a solution inlet (4), a wire mesh demister (5) arranged at the top of the absorption tower (1), a spraying assembly arranged on the absorption tower (1) and located below the wire mesh demister (5), a cleaning liquid tank (6) of the spraying assembly, a spraying ring pipe (7) connected to the cleaning liquid tank (6) and arranged around the outside of the absorption tower (1), a booster pump (8) arranged on the pipeline connecting the spraying ring pipe (7) and the cleaning liquid tank (6), a spraying main pipe (9) connected to the spraying ring pipe (7) and extending into the absorption tower (1), and a plurality of spraying branch pipes (10) connected to the spraying main pipe (9) and provided with nozzles (11).

2. A spray cleaning device for a wire mesh demister of a metallurgical gas CO2 absorption column according to claim 1, characterized in that, The top of the absorption tower (1) is provided with a pressure sensor (12).

3. A spray cleaning device for a wire mesh mist eliminator of a metallurgical gas CO2 absorption column according to claim 1, characterized in that, The pipeline connecting the spraying ring pipe (7) and the cleaning liquid tank (6) is provided with a flow regulating valve (13).

4. A spray cleaning device for a wire mesh mist eliminator of a metallurgical gas CO2 absorption column according to claim 3, characterized in that, The flow regulating valve (13) is an electromagnetic valve, and the flow regulating valve (13) is electrically connected with a PLC controller.

5. A spray cleaning device for a wire mesh mist eliminator of a metallurgical gas CO2 absorption column according to claim 2, characterized in that, The pressure sensor (12) and the PLC controller are electrically connected, and the booster pump (8) and the PLC controller are electrically connected.

6. A spray cleaning device for a wire mesh mist eliminator of a metallurgical gas CO2 absorption column according to claim 1, characterized in that, The nozzles (11) are fan-shaped wide-angle nozzles.

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