Gas-liquid separation device of trioxymethylene waste gas washing tower

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to a gas-liquid separation device of a trioxymethylene waste gas washing tower, which is characterized in that the washing tower is connected with a separator, and two gas outlet pipelines are arranged and are connected with the washing tower and the separator; the separator is provided with an inlet, an outlet, a liquid discharge port, a liquid level meter port and a manhole, the separator is internally provided with a demister and a downcomer, the water vapor in the waste gas is separated out through a gas-liquid separation technology, the water vapor is sent back to the inlet of a conveying fan through a gas outlet pipeline of the separator, and the water vapor is conveyed to the outlet of the conveying fan through a gas outlet pipeline of the separator. The device can quickly and thoroughly separate the liquid in the waste gas, enables the liquid to return to a system for secondary application, overcomes a series of problems of fan damage, catalyst impact, sewage treatment load increase and the like caused by the fact that the waste gas carries the liquid, and enables waste gas treatment facilities to stably operate for a long time.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, specifically to a trioxymethylene waste gas scrubbing tower gas-liquid separation device. Background Technology

[0002] Trioxymethylene, also known as trioxane, is mainly used as an intermediate in engineering plastics polyoxymethylene and other chemicals. It can also be used as a disinfectant and a colorless, flameless fuel. During the process of conveying monomer waste gas to the waste gas treatment system, the waste gas after being washed by the scrubbing tower often carries water, causing water to enter the lubrication and cooling system of the conveying fan, corroding and damaging the fan. Moreover, the water carried by the waste gas impacts the catalyst in the polymerization waste gas treatment system, and the water is discharged from the fan inlet into the sewage system, which not only wastes materials but also increases the burden on the sewage treatment system. Therefore, it is necessary to make improvements. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a trioxymethylene waste gas scrubbing tower gas-liquid separation device to solve the above problems.

[0004] The purpose of this utility model is achieved as follows: a trioxymethylene waste gas scrubbing tower gas-liquid separation device includes a scrubbing tower and a separator, wherein a scrubbing tower outlet pipeline is connected between the scrubbing tower and the separator, and a separator outlet pipeline is connected to the separator, the other end of which is connected to the inlet of a conveying fan.

[0005] Preferably, the outlet of the conveying fan is connected to an exhaust gas treatment system.

[0006] Preferably, it also includes a pressure controller, and an exhaust gas venting pipeline is connected to the gas outlet pipeline of the separator, and a first self-regulating valve is provided on the exhaust gas venting pipeline to cooperate with the pressure controller.

[0007] Preferably, the bottom of the separator is connected to a drain line, and the other end of the drain line is connected to a drain system. The drain line is equipped with a waste liquid recovery tank and a waste liquid transfer pump.

[0008] Preferably, a second self-regulating valve is provided on the drain line, and a liquid level controller is provided on the separator. The second self-regulating valve is used in conjunction with the liquid level controller.

[0009] This utility model has the following beneficial effects:

[0010] 1. This trioxymethylene waste gas scrubbing tower gas-liquid separation device connects the scrubbing tower and the separator, and sets up two outlet pipelines. The outlet pipeline of the scrubbing tower connects the scrubbing tower and the separator, and is used to send the scrubbed waste gas, which still contains a certain amount of water vapor, into the separator. The separator is equipped with an inlet, outlet, drain port, level gauge port and manhole. The separator is equipped with a demister and downcomer. Through gas-liquid separation technology, the water vapor in the waste gas is separated and sent back to the inlet of the conveying fan through the outlet pipeline of the separator, realizing a closed loop circulation. This device can quickly and thoroughly separate the liquid in the waste gas, so that the liquid can be returned to the system for secondary use. At the same time, it overcomes a series of problems caused by liquid in the waste gas, such as fan damage, catalyst impact and increased wastewater treatment load, so that the waste gas treatment facility can operate stably for a long time.

[0011] 2. The first self-regulating valve and the pressure controller constitute an automatic pressure regulation system. An automatic exhaust valve group is installed on the exhaust gas pipeline, and its action information is connected to the pressure controller to achieve precise control of gas pressure. The exhaust gas pipeline can effectively discharge the exhaust gas in the system, ensuring the cleanliness of the working environment and the normal operation of the equipment. The pressure controller adjusts the gas flow according to the set pressure value, while the first self-regulating valve automatically adjusts the resistance to gas flow according to the instructions of the pressure controller, thereby achieving precise automatic regulation of gas pressure and ensuring stable operation of the system pressure.

[0012] 3. The drain line facilitates the discharge of the separated liquid. The other end of the drain line is connected to the drain system, which allows for more efficient treatment and utilization of the discharged liquid. The second self-regulating valve installed on the drain line, together with the liquid level controller, constitutes an automatic liquid level regulation system. The liquid level controller is connected to the signal terminal of the regulating valve group at the bottom of the separator to realize automatic control of the separator liquid level and the flow rate of the drain line. According to the change of the separator liquid level, the second self-regulating valve will automatically open or close, thereby ensuring that the liquid level in the separator is always kept in an ideal state and avoiding problems caused by excessively high or low liquid levels. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] The labels in the attached diagram are:

[0016] 1. Scrubber; 2. Pressure controller; 3. Separator; 4. Liquid level controller; 5. Drainage pipeline; 6. Waste liquid recovery tank; 7. Conveying fan; 8. Waste liquid transfer pump; 9. Drainage system; 10. Waste gas treatment system; 11. Scrubber outlet pipeline; 12. First self-regulating valve; 13. Separator outlet pipeline; 14. Second self-regulating valve; 15. Waste gas venting pipeline. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0018] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0019] Example 1:

[0020] A trioxymethylene waste gas scrubbing tower gas-liquid separation device includes a scrubbing tower 1 and a separator 3. A scrubbing tower outlet pipeline 11 is connected between the scrubbing tower 1 and the separator 3. A separator outlet pipeline 13 is connected to the separator 3. The other end of the separator outlet pipeline 13 is connected to the inlet of a conveying fan 7. By connecting the scrubbing tower 1 and the separator 3 and setting two outlet pipelines, the scrubbing tower outlet pipeline 11 connects the scrubbing tower 1 and the separator 3, and is used to send the scrubbed waste gas, which still contains a certain amount of water vapor, into the separator 3. The separator 3 is equipped with an inlet, an outlet, a drain outlet, a level gauge, and a manhole. The separator 3 is equipped with a demister and a downcomer. Through gas-liquid separation technology, the water vapor in the waste gas is separated and sent back to the inlet of the conveying fan 7 through the separator outlet pipeline 13, realizing a closed-loop circulation. This device can quickly and thoroughly separate liquid from waste gas, allowing the liquid to be reused in the system. At the same time, it overcomes a series of problems caused by liquid in the waste gas, such as damage to the fan, impact on the catalyst, and increased load on the wastewater treatment, enabling the waste gas treatment facility to operate stably for a long time.

[0021] In this embodiment, the outlet of the conveying fan 7 is connected to the exhaust gas treatment system 10. Connecting the outlet of the conveying fan 7 to the exhaust gas treatment system 10 allows the exhaust gas discharged from the conveying fan 7 to enter the exhaust gas treatment system 10 for treatment in a timely manner, effectively purifying the exhaust gas, preventing the exhaust gas from polluting the environment, reducing negative environmental impacts, and ensuring good air quality and working environment.

[0022] In this embodiment, a pressure controller 2 is also included. A waste gas venting pipeline 15 is connected to the separator outlet pipeline 13. The waste gas venting pipeline 15 is equipped with a first self-regulating valve 12 that works in conjunction with the pressure controller 2. That is, the first self-regulating valve 12 and the pressure controller 2 constitute an automatic pressure regulation system. An automatic exhaust valve group is installed on the waste gas venting pipeline 15, and its action information is connected to the pressure controller 2 to achieve precise control of gas pressure. For example, when the controlled pressure is lower than the set value, the valve opening of the first self-regulating valve 12 increases; when the controlled pressure is higher than the set value, the valve opening of the first self-regulating valve 12 decreases. The waste gas venting pipeline 15 can effectively discharge the waste gas in the system, ensuring the cleanliness of the working environment and the normal operation of the equipment. The pressure controller 2 adjusts the gas flow according to the set pressure value, while the first self-regulating valve 12 automatically adjusts the resistance to gas flow according to the instructions of the pressure controller 2, thereby achieving precise automatic regulation of gas pressure and ensuring stable operation of the system pressure.

[0023] In this embodiment, a drain line 5 is connected to the bottom of the separator 3, and the other end of the drain line 5 is connected to a drain system 9. The drain line 5 is equipped with a waste liquid recovery tank 6 and a waste liquid transfer pump 8. The drain line 5 facilitates the discharge of the separated liquid, and the other end of the drain line 5 is connected to the drain system 9 for more efficient treatment and utilization of the discharged liquid. To better utilize the waste liquid, a waste liquid recovery tank 6 is installed on the drain line 5 to collect the discharged waste liquid, and the waste liquid is then pumped by the waste liquid transfer pump 8 to the next stage of treatment or utilization in the drain system 9, thereby achieving the recycling of the waste liquid.

[0024] In this embodiment, a second self-regulating valve 14 is installed on the drain line 5, and a level controller 4 is installed on the separator 3. The second self-regulating valve 14 and the level controller 4 work together to form an automatic level adjustment system. The level controller 4 is connected to the signal terminal of the regulating valve group at the bottom outlet of the separator 3 to realize automatic control of the liquid level of the separator 3 and automatically control the flow rate of the drain line 5. For example, when the liquid level is low, the valve opening of the second self-regulating valve 14 increases, and when the liquid level is high, the valve opening of the second self-regulating valve 14 decreases. According to the change of the liquid level in the separator 3, the second self-regulating valve 14 will also automatically open or close, thereby ensuring that the liquid level in the separator 3 is always kept in a suitable state and avoiding problems caused by excessively high or low liquid levels.

[0025] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be divided into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gas-liquid separation device for a trioxane off-gas scrubbing column, characterized by: It comprises a washing tower (1) and a separator (3), a washing tower gas outlet pipeline (11) is arranged between the washing tower (1) and the separator (3), a separator gas outlet pipeline (13) is arranged on the separator (3), and the other end of the separator gas outlet pipeline (13) is communicated with the inlet of a conveying fan (7).

2. A gas-liquid separation device for a trioxane off-gas scrubbing column according to claim 1, characterized in that: The outlet of the conveying fan (7) is communicated with a waste gas treatment system (10).

3. A gas-liquid separation device for a trioxane off-gas scrubbing column according to claim 1, characterized in that: It also comprises a pressure controller (2), a waste gas exhaust pipeline (15) is arranged on the separator gas outlet pipeline (13), and a first self-regulating valve (12) is arranged on the waste gas exhaust pipeline (15) and used in cooperation with the pressure controller (2).

4. A gas-liquid separation device for a trioxane off-gas scrubbing column according to claim 1, characterized in that: A liquid discharge pipeline (5) is arranged at the bottom of the separator (3), the other end of the liquid discharge pipeline (5) is communicated with a liquid discharge system (9), and a waste liquid recovery tank (6) and a waste liquid conveying pump (8) are arranged on the liquid discharge pipeline (5).

5. A gas-liquid separation device for a trioxane off-gas scrubbing column according to claim 4, characterized in that: A second self-regulating valve (14) is arranged on the liquid discharge pipeline (5), a liquid level controller (4) is arranged on the separator (3), and the second self-regulating valve (14) is used in cooperation with the liquid level controller (4).

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