Chlorine liquefying device

Abstract

The invention relates to the technical field of chlorine processing equipment, in particular to a chlorine liquefying device which comprises a chlorine liquefying unit, an input pipeline of the chlorine liquefying unit is connected with a chlorine buffer tank, an output pipeline of the chlorine liquefying unit is connected with a liquid chlorine separator, and the output end of the liquid chlorine separator is connected with a liquid chlorine storage tank. The output end of the liquid chlorine storage tank is connected to the liquid chlorine storage area, and the input pipeline of the chlorine liquefying unit is connected with a chlorine compressor through a pressurizing pipeline. According to the chlorine liquefying device, the chlorine compressor is additionally arranged, when chlorine needs to be liquefied, the chlorine is pressurized through the newly-arranged chlorine compressor and then sent into the chlorine liquefier to be liquefied, and the pressure of the chlorine sent to the chlorine liquefying device is increased, so that the chlorine liquefying efficiency of the chlorine liquefying device is improved, and the tail gas washing amount is reduced; and the conveying valve and the pressurizing valve can freely control whether the chlorine enters the chlorine compressor to be pressurized or not, and flexible operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of chlorine processing equipment, and specifically, to a chlorine liquefaction device. Background Art

[0002] Currently, when the chlorine gas produced by the electrolytic cell is greater than the amount used by the production line, the chlorine gas can be sent to the chlorine liquefaction unit through the chlorine gas pipeline.

[0003] Since in actual production, the pressure of the chlorine gas sent to the chlorine liquefaction unit through the chlorine gas pipeline is generally low (<0.15 MPa), it cannot meet the long-term stable operation of the chlorine liquefaction unit, resulting in a low chlorine liquefaction efficiency. As a result, a large amount of chlorine gas is discharged to the tail gas scrubbing system for washing and elimination, causing certain economic losses, increasing the workload of the tail gas scrubbing system, and easily causing chlorine gas overflow accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a chlorine liquefaction device to solve the problems of low chlorine liquefaction efficiency, resulting in a large amount of chlorine gas being discharged to the tail gas scrubbing system for washing and elimination, causing economic losses, increasing the workload of the tail gas scrubbing system, and easily causing chlorine gas overflow accidents as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides a chlorine liquefaction device, including a chlorine liquefaction unit. The input pipeline of the chlorine liquefaction unit is connected to a chlorine gas buffer tank. The output pipeline of the chlorine liquefaction unit is connected to a liquid chlorine separator. The output end of the liquid chlorine separator is connected to a liquid chlorine storage tank. The output end of the liquid chlorine storage tank is connected to the liquid chlorine storage area. A chlorine compressor is connected to the input pipeline of the chlorine liquefaction unit through a pressurization pipeline. The pressurization pipeline includes an input three-way pipe and an output three-way pipe. The input three-way pipe and the output three-way pipe are connected through a pipeline. One side port of the input three-way pipe is connected to the input end of the chlorine compressor through an intake pipeline. One side port of the output three-way pipe is connected to the output end of the chlorine compressor through an exhaust pipeline.

[0006] As a preferred technical solution of the present invention, a compressed air inlet pipeline is connected to one side of the liquid chlorine storage tank.

[0007] As a preferred technical solution of the present invention, the exhaust outlets of the chlorine liquefaction unit, the chlorine gas buffer tank, the liquid chlorine separator, and the liquid chlorine storage tank are all connected to the scrubbing system through pipelines.

[0008] As a preferred technical solution of the present invention, the chlorine liquefaction unit is connected to a screw compressor through a pipeline.

[0009] As a preferred technical solution of the present invention, a conveying valve is installed on the pipeline between the input three-way pipe and the output three-way pipe, and a pressurizing valve is installed on the air inlet pipeline.

[0010] As a preferred technical solution of the present invention, the upper air inlet of the input three-way pipe is connected to the output end of the chlorine buffer tank, and the lower air outlet of the output three-way pipe is connected to the input end of the chlorine liquefaction unit.

[0011] As a preferred technical solution of the present invention, an automatic oil collector is arranged outside the chlorine liquefaction unit. The automatic oil collector is connected to the lubricating oil inlet and outlet pipeline of the screw compressor through a pipeline, and the automatic oil collector is connected to the lubricating oil inlet and outlet pipeline of the chlorine liquefaction unit through a pipeline.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] In this chlorine liquefaction device, by adding a chlorine compressor, when chlorine needs to be liquefied, it is first pressurized by the newly added chlorine compressor. When the pressure of chlorine reaches between 0.15 MPa and 0.3 MPa, it is then sent to the chlorine liquefier for liquefaction, which improves the pressure of chlorine sent to the chlorine liquefaction device, thereby improving the chlorine liquefaction efficiency of the chlorine liquefaction device, reducing the tail gas washing volume, reducing economic losses and the probability of chlorine overflow accidents. Moreover, the conveying valve and the pressurizing valve are set to freely control whether chlorine goes to the chlorine compressor for pressurization operation, which is convenient for flexible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a schematic diagram of the working process of the present invention;

[0016] Figure 3 is a schematic diagram of the structure of the pressurizing pipeline in the present invention.

[0017] The meanings of each label in the figure are as follows:

[0018] 1. Chlorine liquefaction unit; 2. Chlorine buffer tank; 3. Liquid chlorine separator; 4. Liquid chlorine storage tank; 5. Liquid chlorine storage area; 6. Washing system; 7. Chlorine compressor; 8. Screw compressor; 9. Automatic oil collector; 10. Pressurizing pipeline; 101. Air inlet pipeline; 102. Air outlet pipeline; 103. Input three-way pipe; 104. Output three-way pipe; 105. Conveying valve; 106. Pressurizing valve. DETAILED DESCRIPTION OF THE INVENTION

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

[0020] The present invention provides a chlorine liquefaction device, such as Figures 1-3 As shown, it includes a chlorine liquefaction unit 1 for liquefying chlorine. The input pipeline of the chlorine liquefaction unit 1 is connected with a chlorine buffer tank 2 for caching chlorine. The output pipeline of the chlorine liquefaction unit 1 is connected with a liquid chlorine separator 3 for separating impurities in liquid chlorine to obtain pure chlorine. The liquid chlorine separator 3 is a conventional technical solution in the field and will not be described in detail here. The output end of the liquid chlorine separator 3 is connected with a liquid chlorine storage tank 4 for storing liquid chlorine. The output end of the liquid chlorine storage tank 4 is connected to a liquid chlorine storage area 5 for storing liquid chlorine. The input pipeline of the chlorine liquefaction unit 1 is connected with a chlorine compressor 7 through a pressurizing pipeline 10. The chlorine compressor 7 is a conventional gas compressor in the prior art, which compresses chlorine to a pressure between 0.15MPa and 0.3MPa after passing chlorine. The pressurizing pipeline 10 includes an input tee 103 and an output tee 104. The input tee 103 and the output tee 104 are connected by a pipeline. One side port of the input tee 103 is connected to the input end of the chlorine compressor 7 through an air inlet pipeline 101, and one side port of the output tee 104 is connected to the output end of the chlorine compressor 7 through an air outlet pipeline 102. The chlorine is pre-pressurized by the chlorine compressor 7 and then passed into the chlorine liquefaction unit 1 to improve the efficiency of chlorine liquefaction.

[0021] In this embodiment, one side of the liquid chlorine storage tank 4 is connected to a compressed air inlet pipeline for introducing compressed air to ensure pressurization and prevent the liquid chlorine from vaporizing.

[0022] Specifically, the exhaust gas outlets of the chlorine liquefaction unit 1, the chlorine buffer tank 2, the liquid chlorine separator 3, and the liquid chlorine storage tank 4 are all connected to the washing system 6 through pipelines, so as to collect and wash the generated exhaust gas. The washing system 6 is a conventional technical solution in this field and will not be described in detail here.

[0023] Furthermore, the chlorine liquefaction unit 1 is connected to a screw compressor 8 through a pipeline, which is used to compress the chlorine to liquefy it, and then transport the liquefied liquid chlorine back to the chlorine liquefaction unit 1.

[0024] Further, a conveying valve 105 is installed on the pipeline between the input three-way pipe 103 and the output three-way pipe 104, and a pressurizing valve 106 is installed on the intake pipeline 101. When pressurization is required, the pressurizing valve 106 is opened and the conveying valve 105 is closed. When pressurization is not required, the conveying valve 105 is opened and the pressurizing valve 106 is closed.

[0025] Further, the upper intake port of the input three-way pipe 103 is connected to the output end of the chlorine buffer tank 2, and the lower outlet of the output three-way pipe 104 is connected to the input end of the chlorine liquefaction unit 1, facilitating the smooth transportation of chlorine.

[0026] Further, an automatic oil collector 9 is arranged outside the chlorine liquefaction unit 1. The automatic oil collector 9 is connected to the lubricating oil inlet and outlet pipeline of the screw compressor 8 through a pipeline, facilitating the lubricating oil of the automatic oil collector 9 to circulate into the screw compressor 8. The automatic oil collector 9 is connected to the lubricating oil inlet and outlet pipeline of the chlorine liquefaction unit 1 through a pipeline, facilitating the lubricating oil of the automatic oil collector 9 to circulate into the chlorine liquefaction unit 1.

[0027] When the chlorine liquefaction device of the present invention is in use, first, the chlorine from the electrolytic magnesium is introduced into the chlorine buffer tank 2, and at this time, part of the waste gas is discharged. Then, by opening the pressurizing valve 106 and closing the conveying valve 105, the chlorine is introduced into the chlorine compressor 7 for pressurization, and then transported to the chlorine liquefaction unit 1. At this time, part of the waste gas is discharged. The chlorine in the chlorine liquefaction unit 1 is sent to the screw compressor 8 to compress the chlorine to make it liquefy, and the liquefied liquid chlorine is transported back to the chlorine liquefaction unit 1. Then, the liquefied chlorine is sent to the liquid chlorine separator 3 to separate the impurities. At this time, part of the waste gas is discharged. Then, it is transported to the liquid chlorine storage tank 4 for storage and the waste gas is discharged. The remaining pure liquid chlorine is transported to the liquid chlorine storage area 5, and the discharged waste gas is washed and recycled through the washing system 6.

[0028] Finally, it should be noted that for the chlorine liquefaction unit 1, chlorine compressor 7, automatic oil collector 9, etc. in this embodiment, the electronic components in the above components are all general standard components or components known to those skilled in the art. Their structures and principles can be known by those skilled in the art through technical manuals or obtained through conventional experimental methods. At the idle places of this device, all the above electrical components are respectively connected by wires. The specific connection means should refer to the working sequence of each electrical component in the above working principle to complete the electrical connection, which are all well-known technologies in the art.

[0029] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A chlorine liquefaction device, comprising a chlorine liquefaction unit (1), characterized in that: The input pipeline of the chlorine liquefaction unit (1) is connected to a chlorine buffer tank (2); the output pipeline of the chlorine liquefaction unit (1) is connected to a liquid chlorine separator (3); the output end of the liquid chlorine separator (3) is connected to a liquid chlorine storage tank (4); the output end of the liquid chlorine storage tank (4) is connected to a liquid chlorine storage area (5); the input pipeline of the chlorine liquefaction unit (1) is connected to a chlorine compressor (7) via a pressurizing pipeline (10); the pressurizing pipeline (10) comprises an input tee pipe (103) and an output tee pipe (104); the input tee pipe (103) and the output tee pipe (104) are connected via a pipeline; one side port of the input tee pipe (103) is connected to the input end of the chlorine compressor (7) via an air inlet pipeline (101); and one side port of the output tee pipe (104) is connected to the output end of the chlorine compressor (7) via an air outlet pipeline (102).

2. The chlorine liquefaction device according to claim 1, characterized in that: One side of the liquid chlorine storage tank (4) is connected to a compressed air inlet pipeline, and the waste gas outlets of the chlorine liquefaction unit (1), the chlorine buffer tank (2), the liquid chlorine separator (3), and the liquid chlorine storage tank (4) are all connected to the washing system (6) through pipelines.

3. The chlorine liquefaction device according to claim 1, characterized in that: The chlorine liquefaction unit (1) is connected to a screw compressor (8) via a pipeline.

4. The chlorine liquefaction device according to claim 1, characterized in that: A delivery valve (105) is installed on the pipeline between the input three-way pipe (103) and the output three-way pipe (104), and a pressurizing valve (106) is installed on the air intake pipeline (101).

5. The chlorine liquefaction device according to claim 4, characterized in that: The upper air inlet of the input three-way pipe (103) is connected to the output end of the chlorine buffer tank (2), and the lower air outlet of the output three-way pipe (104) is connected to the input end of the chlorine liquefaction unit (1).

6. The chlorine liquefaction device according to claim 5, characterized in that: An automatic oil collector (9) is arranged on the outside of the chlorine liquefaction unit (1), and the automatic oil collector (9) is connected to the lubricating oil inlet and outlet pipelines of the screw compressor (8) through a pipeline. The automatic oil collector (9) is connected to the lubricating oil inlet and outlet pipelines of the chlorine liquefaction unit (1) through a pipeline.

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