Chemical storage tank waste gas line liquid collecting device

Abstract

The utility model discloses a liquid collecting device for a waste gas line of a chemical storage tank, which belongs to the technical field of chemical production equipment and comprises a liquid collecting tank, a plurality of tank body support legs for stable placement are mounted on the bottom surface of the liquid collecting tank, the top of the liquid collecting tank is communicated with the waste gas line, and a waste gas inlet valve is arranged on a pipeline of the waste gas line. The top surface of the liquid collecting tank is connected with a nitrogen gas source line, the top surface of the liquid collecting tank is also connected with a gas return line, a waste gas outlet valve is arranged on a pipeline line of the gas return line, and a nitrogen gas inlet valve is arranged on a pipeline line of the nitrogen gas source line. According to the device, the nitrogen source line is arranged, the pressure in the liquid collecting tank is guaranteed, continuous liquid collecting and recycling of materials in waste gas of the chemical storage tank are achieved, certain economic value is achieved, meanwhile, the technological operation risk, the safety production risk and the environment-friendly safety emission risk can be avoided, and it is guaranteed that industrial three wastes are safely discharged in a standard reaching mode.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to a liquid collecting device for the waste gas line of a chemical storage tank. Background Art

[0002] In chemical industrial product production enterprises, it is generally necessary to build chemical storage tanks for raw materials, intermediate products, finished products, etc. Most of the chemicals stored in these chemical storage tanks have characteristics such as being toxic, harmful, flammable, explosive, and having a high content of volatile organic compounds (VOCs) in the gas phase. They cannot be directly discharged into the atmospheric environment through a breather valve and mostly need to be further treated in an incinerator. If there is too much liquid entrained in the waste gas of the storage tank breather valve and the content of volatile organic compounds is high, it will cause the explosion lower limit of the waste gas entering the incinerator to exceed the standard, bringing potential safety hazards, and will also cause the safety production risk of the incinerator operating condition fluctuations; it may also cause blockage of the instrument pipeline due to insufficient heat tracing temperature in the operating condition, inability to obtain representative analysis samples, and damage to key instrument components, resulting in distorted analysis results and incorrect analysis results, leading to serious consequences of safety production accidents. Therefore, it is very necessary to set up a liquid collecting and recycling device. Content of the Utility Model

[0003] The purpose of the utility model is to provide a liquid collecting device for the waste gas line of a chemical storage tank in order to solve the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A liquid collecting device for the waste gas line of a chemical storage tank includes a liquid collecting tank. A plurality of tank supports for placing stably are installed on the bottom surface of the liquid collecting tank. The top of the liquid collecting tank is connected and communicated with the waste gas line. An inlet waste gas valve is provided on the pipeline of the waste gas line. A nitrogen gas source line is connected to the top surface of the liquid collecting tank. A return gas line is also connected to the top surface of the liquid collecting tank. An outlet waste gas valve is provided on the pipeline of the return gas line. An inlet nitrogen valve is provided on the pipeline of the nitrogen gas source line.

[0006] As a further description of the above technical scheme:

[0007] A balance liquid outlet is connected and communicated with the top of the side surface of the liquid collecting tank. A regular recovery port is connected and communicated with the bottom of the side surface. A liquid outlet valve is provided on the regular recovery port.

[0008] As a further description of the above technical scheme:

[0009] A sight glass is also installed between the liquid collecting tank and the waste gas line. A liquid level gauge for monitoring the internal liquid level of the liquid collecting tank is installed on one side of the liquid collecting tank. A thermometer for monitoring the internal temperature of the liquid collecting tank and a pressure gauge for monitoring the internal pressure of the liquid collecting tank are installed on the top surface of the liquid collecting tank.

[0010] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0011] In the present utility model, by setting a nitrogen gas source line, the pressure inside the liquid collection tank is ensured, and continuous liquid collection and recovery of the materials in the waste gas of the chemical storage tank are realized, which has certain economic value. At the same time, it can avoid process operation risks, production safety risks and environmental protection and safety emission risks, and ensure the safe and up-to-standard discharge of industrial three wastes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a front-side structural schematic diagram of the present utility model;

[0013] Figure 2 is a rear-side structural schematic diagram of the present utility model.

[0014] Legend: 1. Waste gas line; 2. Inlet waste gas valve; 3. Sight glass; 4. Liquid collection tank; 5. Thermometer; 6. Pressure gauge; 7. Tank body support feet; 8. Nitrogen gas source line; 9. Liquid level gauge; 10. Return gas line; 11. Balanced liquid outlet; 12. Regular recovery port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0016] Embodiment 1:

[0017] As Figure 1-2 shown, a liquid collection device for a chemical storage tank waste gas line includes a liquid collection tank 4. A plurality of tank body support feet 7 for stable placement are installed on the bottom surface of the liquid collection tank 4. The top of the liquid collection tank 4 is communicated with the waste gas line 1. An inlet waste gas valve 2 is provided on the pipeline of the waste gas line 1. A nitrogen gas source line 8 is connected to the top surface of the liquid collection tank 4. A return gas line 10 is also connected to the top surface of the liquid collection tank 4. An outlet waste gas valve is provided on the pipeline of the return gas line 10. An inlet nitrogen valve is provided on the pipeline of the nitrogen gas source line 8. By setting the nitrogen gas source line 8, the pressure inside the liquid collection tank 4 is ensured, and continuous liquid collection and recovery of the materials in the waste gas of the chemical storage tank are realized, which has certain economic value. At the same time, it can avoid process operation risks, production safety risks and environmental protection and safety emission risks, and ensure the safe and up-to-standard discharge of industrial three wastes.

[0018] Embodiment 2:

[0019] Basically the same as the technical solution of Embodiment 1, the difference is that as Figure 1-2As shown in the figure, a balanced liquid outlet 11 is connected to the top side of the liquid collection tank 4, which can timely discharge the waste liquid in the liquid collection tank 4 exceeding the specified liquid level. A regular recovery port 12 is connected to the bottom side, which is convenient for regularly discharging the waste liquid in the liquid collection tank 4 at the specified liquid level to ensure the liquid collection tank 4. An outlet valve is provided on the regular recovery port 12. A sight glass 3 is also installed between the liquid collection tank 4 and the exhaust gas line 1. A liquid level gauge 9 for monitoring the internal liquid level of the liquid collection tank 4 is installed on one side of the liquid collection tank 4. A thermometer 5 for monitoring the internal temperature of the liquid collection tank 4 and a pressure gauge 6 for monitoring the internal pressure of the liquid collection tank 4 are installed on the top surface of the liquid collection tank 4 to ensure real-time understanding of the liquid temperature and pressure inside the liquid collection tank 4.

[0020] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A liquid collection device for a chemical storage tank exhaust gas line, comprising a liquid collection tank (4), a plurality of tank feet (7) for stable placement are installed on the bottom surface of the liquid collection tank (4), the top of the liquid collection tank (4) is communicated with the exhaust gas line (1), and an exhaust gas inlet valve (2) is provided on the pipeline of the exhaust gas line (1), characterized in that, A nitrogen gas supply line (8) is connected to the top surface of the liquid collection tank (4), and a gas return line (10) is also connected to the top surface of the liquid collection tank (4). An exhaust gas valve is provided on the pipeline of the gas return line (10), and a nitrogen gas inlet valve is provided on the pipeline of the nitrogen gas supply line (8).

2. The liquid collecting device for the waste gas line of a chemical storage tank according to claim 1, wherein A balanced liquid outlet (11) is communicated with the top of the side surface of the liquid collection tank (4), and a regular recovery port (12) is communicated with the bottom of the side surface. A liquid outlet valve is provided on the regular recovery port (12).

3. The liquid collection device for the waste gas line of a chemical storage tank according to claim 1, wherein, A sight glass (3) is also installed between the liquid collection tank (4) and the exhaust gas line (1). A liquid level gauge (9) for monitoring the internal liquid level of the liquid collection tank (4) is installed on one side of the liquid collection tank (4), and a thermometer (5) for monitoring the internal temperature of the liquid collection tank (4) and a pressure gauge (6) for monitoring the internal pressure of the liquid collection tank (4) are installed on the top surface of the liquid collection tank (4).

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