Carbon dioxide compression device

Abstract

The utility model relates to the technical field of cryogenic gas, in particular to a carbon dioxide compression device which comprises a drainage cylinder and a compressor body, an inner cavity is formed in the drainage cylinder, the air inlet end and the air outlet end of the drainage cylinder are respectively connected with an air inlet pipe and an air outlet pipe which are communicated with the inner cavity, the air outlet pipe is connected with the compressor body, and the compressor body is connected with the drainage cylinder. A cooling cavity surrounding the inner cavity is formed in the side wall of the drainage cylinder, the drainage cylinder is connected with a liquid inlet pipe and a liquid discharge pipe which are communicated to the cooling cavity, a drainage pipe communicated to the inner cavity is arranged at the bottom of the drainage cylinder, an electromagnetic valve is mounted on the drainage pipe, and a carbon dioxide separation membrane is mounted in the air outlet pipe; before gas enters the compressor, moisture in carbon dioxide is removed, and influences such as corrosion to parts of the compressor are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic gases, and more specifically to a carbon dioxide compression device. Background Art

[0002] Carbon dioxide has a wide range of uses. It can be used as a refrigerant to preserve food and can be used for artificial rainfall. It is also an industrial raw material that can be used to make soda ash, urea, and soft drinks. It can also be used in coolants, welding, foundry industry, refreshing drinks, fire extinguishers, the manufacture of carbonates, pesticides, etc.

[0003] During the compression process of carbon dioxide, the temperature of the gas will rise due to compression. In order to ensure the stability and safety of the compression process, multiple compressors are often used to compress carbon dioxide in multiple stages. A cooler will be set up between two compressions to cool the gas. However, after the gas is compressed and cooled, water droplets will form. Water droplets entering the compressor will cause rust and other damage to the compressor components, especially in the high-pressure and high-temperature environment inside the compressor. Utility Model Content

[0004] The utility model aims to provide a carbon dioxide compression device, which removes moisture in carbon dioxide before the gas enters the compressor, thereby reducing the effects of rust and the like on the parts of the compressor.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A carbon dioxide compression device includes a drain cylinder and a compressor body, wherein an inner cavity is defined in the drain cylinder, and the air inlet end and the air outlet end of the drain cylinder are respectively connected to an air inlet pipe and an air outlet pipe connected to the inner cavity, and the air outlet pipe is connected to the compressor body. A cooling cavity is defined in the side wall of the drain cylinder surrounding the inner cavity, and an inlet pipe and a discharge pipe connected to the cooling cavity are connected to the drain cylinder. A drain pipe connected to the inner cavity is disposed at the bottom of the drain cylinder, and an electromagnetic valve is installed on the drain pipe. A carbon dioxide separation membrane is installed in the air outlet pipe.

[0007] Furthermore, a filter is arranged in the air intake pipe.

[0008] Furthermore, the filter screens are provided in two groups, and activated carbon is filled between the two groups of filter screens.

[0009] Furthermore, a temperature sensor is installed on the side wall of the inner cavity.

[0010] Furthermore, a liquid level sensor is installed on the side wall of the inner cavity.

[0011] Furthermore, a partition is provided on the side wall of the inner cavity, and the partition is located between the air inlet end and the air outlet end of the drainage cylinder.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The liquid inlet pipe is connected to an external cold source, and coolant is injected into the cooling cavity to condense the gas entering the inner cavity. Based on the difference in diffusion rates of carbon dioxide molecules and water molecules in the membrane material, water molecules and carbon dioxide molecules are separated by a carbon dioxide separation membrane, so that carbon dioxide enters the compressor body through an outlet pipe for compression, and moisture in the gas forms water droplets that gather at the bottom of the inner cavity and are discharged through a drain pipe. The utility model removes moisture in carbon dioxide before the gas enters the compressor, thereby reducing the effects of rust on the components of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial cross-sectional view of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] 1. Drain cylinder; 101. Inner cavity; 102. Cooling cavity; 2. Compressor body; 3. Air inlet pipe; 4. Air outlet pipe; 5. Liquid inlet pipe; 6. Liquid discharge pipe; 7. Drain pipe; 8. Solenoid valve; 9. Carbon dioxide separation membrane; 10. Filter; 11. Activated carbon; 12. Temperature sensor; 13. Liquid level sensor; 14. Partition. DETAILED DESCRIPTION

[0017] like Figure 1 and Figure 2 As shown, a carbon dioxide compression device includes a drain cylinder 1 and a compressor body 2, an inner cavity 101 is opened in the drain cylinder 1, the air inlet end and the air outlet end of the drain cylinder 1 are respectively connected to the air inlet pipe 3 and the air outlet pipe 4 connected to the inner cavity 101, the air outlet pipe 4 is connected to the compressor body 2, a cooling cavity 102 is opened in the side wall of the drain cylinder 1 around the inner cavity 101, the drain cylinder 1 is connected with a liquid inlet pipe 5 and a liquid discharge pipe 6 connected to the cooling cavity 102, a drain pipe 7 connected to the inner cavity 101 is arranged at the bottom of the drain cylinder 1, a solenoid valve 8 is installed on the drain pipe 7, and a carbon dioxide separation membrane 9 is installed in the air outlet pipe 4.

[0018] A filter screen 10 is arranged in the air intake pipe 3 .

[0019] The filter screen 10 is provided in two groups, and the space between the two groups of filter screens 10 is filled with activated carbon 11 .

[0020] A temperature sensor 12 is installed on the side wall of the inner cavity 101 .

[0021] A liquid level sensor 13 is installed on the side wall of the inner cavity 101 .

[0022] A partition 14 is provided on the side wall of the inner cavity 101, and the partition 14 is located between the air inlet end and the air outlet end of the drainage tube 1; the partition 14 is provided to reduce the gas flow rate so that the gas can have sufficient time to condense and form water droplets.

[0023] Working principle:

[0024] Carbon dioxide gas enters the inner cavity 101 through the air inlet pipe 3, and impurities in the gas are adsorbed and filtered by the filter 10 and the activated carbon 11. The liquid inlet pipe 5 is connected to the external cold source, and the gas entering the inner cavity 101 is condensed by injecting coolant into the cooling cavity 102. The temperature in the inner cavity 101 is monitored by the temperature sensor 12 to prevent the liquefaction of carbon dioxide due to too low temperature. Based on the difference in diffusion rates of carbon dioxide molecules and water molecules in the membrane material, water molecules and carbon dioxide molecules are separated by the carbon dioxide separation membrane 9, so that carbon dioxide enters the compressor body 2 through the air outlet pipe 4 for compression, and the moisture in the gas forms water droplets and gathers at the bottom of the inner cavity 101. The water level at the bottom of the inner cavity 101 is detected by the liquid level sensor 13, and the on and off time of the drain pipe 7 is controlled by the solenoid valve 8 to prevent carbon dioxide from being discharged from the drain pipe 7.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A carbon dioxide compression device, characterized in that: The invention comprises a drain cylinder (1) and a compressor body (2), wherein an inner cavity (101) is provided in the drain cylinder (1), an air inlet end and an air outlet end of the drain cylinder (1) are respectively connected to an air inlet pipe (3) and an air outlet pipe (4) connected to the inner cavity (101), the air outlet pipe (4) is connected to the compressor body (2), a cooling cavity (102) is provided in the side wall of the drain cylinder (1) surrounding the inner cavity (101), an inlet pipe (5) and a discharge pipe (6) connected to the cooling cavity (102) are connected to the drain cylinder (1), a drain pipe (7) connected to the inner cavity (101) is arranged at the bottom of the drain cylinder (1), an electromagnetic valve (8) is installed on the drain pipe (7), and a carbon dioxide separation membrane (9) is installed in the air outlet pipe (4).

2. The carbon dioxide compression device according to claim 1, characterized in that: A filter screen (10) is arranged inside the air intake pipe (3).

3. The carbon dioxide compression device according to claim 2, characterized in that: The filter screens (10) are provided in two groups, and activated carbon (11) is filled between the two groups of filter screens (10).

4. The carbon dioxide compression device according to claim 1, characterized in that: A temperature sensor (12) is installed on the side wall of the inner cavity (101).

5. The carbon dioxide compression device according to claim 1, characterized in that: A liquid level sensor (13) is installed on the side wall of the inner cavity (101).

6. The carbon dioxide compression device according to claim 1, characterized in that: A partition plate (14) is provided on the side wall of the inner cavity (101), and the partition plate (14) is located between the air inlet end and the air outlet end of the drainage cylinder (1).

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