Carbon dioxide compression purification system

Abstract

The utility model provides a carbon dioxide compression purification system, relates to carbon dioxide compression purification system field, including heat exchanger, purifier and storage tank, heat exchanger is used for drying the compressed carbon dioxide gas, purifier is used for filtering the dried carbon dioxide gas, storage tank is used for storing the carbon dioxide gas. The storage tank is used for storing pure carbon dioxide gas. The heat exchanger comprises a shell, an end cover, a heat exchange pipe, a partition plate, a first gas inlet, a first gas outlet, a recovery pipe and a heat medium connector. By arranging the shell, the end cover, the heat exchange pipe, the partition plate, the first gas inlet, the first gas outlet, the recovery pipe and the heat medium connecting port, the effect of drying compressed high-pressure carbon dioxide gas is achieved, the use of electric energy can be reduced through a heat exchange mode, the dried heat can be recycled, and the energy consumption is reduced. Therefore, the cost of compressing and purifying the carbon dioxide gas can be reduced, and the drying efficiency of the carbon dioxide gas is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of carbon dioxide compression and purification systems, in particular to a carbon dioxide compression and purification system. Background Art

[0002] The carbon dioxide compression and purification system is a device specially used to process carbon dioxide gas, including gas compression, gas cooling, gas drying, gas purification and gas storage. Through compression and purification, impurities in carbon dioxide can be removed and the purity of the gas can be improved to ensure the purity and safety of carbon dioxide gas.

[0003] After being compressed by a three-stage compressor, the carbon dioxide gas is dried by a heater, and the dried compressed gas is stored in a gas tank for standby use. Since the physical state of the carbon dioxide gas changes from gas to liquid after being compressed, in order to prevent the carbon dioxide gas from liquefying after compression, it needs to be heated to ensure that the carbon dioxide gas can be used normally. Electric heating is usually used to heat the compressed carbon dioxide gas, and electric heating operation consumes a lot of electricity, which increases the cost of carbon dioxide compression and purification. In addition, the local temperature of the carbon dioxide gas may be too high or too low, which affects the consistency of the drying effect.

[0004] In summary, the utility model provides a carbon dioxide compression and purification system to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A carbon dioxide compression and purification system includes a heat exchanger, a purifier and a storage tank, wherein the heat exchanger is used to dry the compressed carbon dioxide gas, the purifier is used to filter the dried carbon dioxide gas, and the storage tank is used to store pure carbon dioxide gas. The heat exchanger includes an outer shell, an end cover, a heat exchange tube, a partition, a first air inlet, a first exhaust port, a recovery pipe and a heat medium connection port, the heat exchange tube is installed in the inner cavity of the outer shell, the end cover is installed at one end of the outer shell, the first air inlet and the first exhaust port are both installed on the surface of the outer shell, and the recovery pipe and the heat medium connection port are both installed on the surface of the end cover.

[0007] Furthermore, in the utility model, the partition is fixed to the inner cavity of the end cover, and the inner cavity of the end cover is divided into an air intake chamber and an exhaust chamber by the partition.

[0008] Furthermore, in the utility model, one end of the heat exchange tube is communicated with the air intake chamber, and the other end of the heat exchange tube is communicated with the exhaust chamber.

[0009] Furthermore, in the present invention, one end of the recovery pipe passes through the inner cavity of the end cover and communicates with the exhaust chamber, and one end of the heat medium connection port passes through the inner cavity of the end cover and communicates with the intake chamber.

[0010] Furthermore, in the present invention, one end of the recovery pipe passes through the inner cavity of the end cover and communicates with the exhaust chamber, and one end of the heat medium connection port passes through the inner cavity of the end cover and communicates with the intake chamber.

[0011] Furthermore, in the utility model, the purifier includes a tank body, a collecting hopper, a second air inlet, a second exhaust port and a debris discharge port, the collecting hopper is installed at the bottom of the tank body, the inner cavity of the tank body is installed with a PTFE filter membrane, the second air inlet and the second exhaust port are both installed on the surface of the tank body and are connected to the inner cavity of the tank body, and the debris discharge port is installed at the bottom of the collecting hopper and is connected to the inner cavity of the collecting hopper.

[0012] Furthermore, in the utility model, the first exhaust port is connected to the air outlet of the compressor third-level cache tank through a connecting pipe, the first exhaust port is connected to the second air inlet through a connecting pipe, and the second exhaust port is connected to the air inlet of the storage tank through a connecting pipe.

[0013] Beneficial effects: The utility model has the following beneficial effects:

[0014] The utility model achieves the effect of drying the compressed high-pressure carbon dioxide gas by arranging an outer shell, an end cover, a heat exchange tube, a partition, a first air inlet, a first exhaust port, a recovery pipe and a heat medium connection port. Not only can the use of electric energy be reduced by heat exchange, but also the heat after drying can be recovered and reused, thereby reducing the cost of compressing and purifying the carbon dioxide gas and effectively improving the drying efficiency of the carbon dioxide gas. Through the purifier and the storage tank, the dried carbon dioxide gas can be purified and stored, thereby ensuring the purity and safety of the carbon dioxide gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the utility model partition;

[0017] Figure 3 It is a schematic diagram of the system flow of the utility model.

[0018] In the figure:

[0019] 1. Heat exchanger; 101. Shell; 102. End cover; 103. Heat exchange tube; 104. Partition; 105. First air inlet; 106. First exhaust port; 107. Recovery pipe; 108. Heat medium connection port; 2. Purifier; 201. Tank body; 202. Collection hopper; 203. Second air inlet; 204. Second exhaust port; 205. Exhaust port; 3. Storage tank. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0021] Example 1

[0022] like Figure 1-3 As shown, it is the first embodiment of the utility model, which provides a carbon dioxide compression and purification system, including a heat exchanger 1, a purifier 2 and a storage tank 3. The heat exchanger 1 is used to dry the compressed carbon dioxide gas, the purifier 2 is used to filter the dried carbon dioxide gas, and the storage tank 3 is used to store pure carbon dioxide gas. The heat exchanger 1 includes a shell 101, an end cover 102, a heat exchange tube 103, a partition 104, a first air inlet 105, a first exhaust port 106, a recovery pipe 107 and a heat medium connection port 108. The heat exchange tube 103 is installed in the inner cavity of the shell 101, the end cover 102 is installed at one end of the shell 101, the first air inlet 105 and the first exhaust port 106 are both installed on the surface of the shell 101, and the recovery pipe 107 and the heat medium connection port 108 are both installed on the surface of the end cover 102.

[0023] like Figure 1-3As shown, the carbon dioxide gas in the intake buffer tank enters the three-stage compressor for three-stage compression. A buffer tank is set for each stage of compression. The carbon dioxide gas after the first and second stage compression needs to be cooled by an evaporative cooling tower before entering the next stage of compression. The carbon dioxide gas after three-stage compression is finally stored in the three-stage buffer tank. The gas outlet of the three-stage buffer tank is connected with the first gas inlet 105 through a connecting pipe. The heat exchange high-temperature gas enters the intake chamber through the heat medium connecting port 108, and then enters the exhaust chamber through the diversion of the heat exchange pipe 103, and is finally recovered through the recovery pipe 107. The compressed gas in the inner cavity of the three-level cache tank enters the inner cavity of the outer shell 101 through the first air inlet 105, and the heat exchange tube 103 conducts heat to dry the compressed gas. The dried compressed gas is discharged through the first exhaust port 106 and enters the purifier 2 through the connecting pipe. The compressed gas is filtered and purified by the purifier 2. The purified compressed gas is stored in the storage tank 3. The heat exchange method can not only reduce the use of electric energy, but also recover the heat after drying, thereby reducing the cost of compression and purification of carbon dioxide gas and effectively improving the drying efficiency of carbon dioxide gas.

[0024] Example 2

[0025] Reference Figure 1-3 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0026] In this embodiment, the partition 104 is fixed to the inner cavity of the end cover 102 , and the inner cavity of the end cover 102 is divided into an air intake chamber and an air exhaust chamber by the partition 104 .

[0027] One end of the heat exchange tube 103 is communicated with the air intake chamber, and the other end of the heat exchange tube 103 is communicated with the exhaust chamber.

[0028] One end of the recovery pipe 107 penetrates into the inner cavity of the end cover 102 and communicates with the exhaust chamber, and one end of the heat medium connection port 108 penetrates into the inner cavity of the end cover 102 and communicates with the intake chamber.

[0029] The first air inlet 105 is located at the bottom of the housing 101 and communicates with the inner cavity of the housing 101 . The first air outlet 106 is located at the top of the housing 101 and communicates with the inner cavity of the housing 101 .

[0030] The purifier 2 includes a tank body 201, a collecting hopper 202, a second air inlet 203, a second exhaust port 204 and a debris discharge port 205. The collecting hopper 202 is installed at the bottom of the tank body 201. The inner cavity of the tank body 201 is installed with a PTFE filter membrane. The second air inlet 203 and the second exhaust port 204 are both installed on the surface of the tank body 201 and are connected to the inner cavity of the tank body 201. The debris discharge port 205 is installed at the bottom of the collecting hopper 202 and is connected to the inner cavity of the collecting hopper 202.

[0031] The first exhaust port 106 is connected to the air outlet of the compressor third-level cache tank through a connecting pipe, the first exhaust port 106 is connected to the second air inlet 203 through a connecting pipe, and the second exhaust port 204 is connected to the air inlet of the storage tank 3 through a connecting pipe.

[0032] like Figure 1-3 As shown, the first exhaust port 106 is connected to the second air inlet 203 through a connecting pipe, so that the dried compressed gas can enter the inner cavity of the tank body 201 for filtration. The PTFE filter membrane installed in the inner cavity of the tank body 201 can intercept impurities and particulate matter in the compressed gas, thereby ensuring the purity of the gas. The intercepted particulate matter falls into the inner cavity of the collecting bucket 202 and can be discharged through the impurity discharge port 205. The purified compressed gas is transported to the inner cavity of the storage tank 3 for storage through the second exhaust port 204. A pressure gauge and a pressure relief valve are also installed on the surface of the storage tank 3.

[0033] When in use, the carbon dioxide gas in the air intake buffer tank enters the three-stage compressor for three-stage compression. A buffer tank is set for each stage of compression. The carbon dioxide gas after the first and second stage compression needs to be cooled in the evaporative cooling tower before entering the next stage of compression. The carbon dioxide gas after three-stage compression is finally stored in the three-stage buffer tank. The gas outlet of the three-stage buffer tank is connected with the first air inlet 105 through a connecting pipe. The heat exchange high-temperature gas enters the air intake chamber through the heat medium connecting port 108, and then enters the exhaust chamber through the diversion of the heat exchange pipe 103, and is finally recovered through the recovery pipe 107. The compressed gas in the inner cavity of the three-stage buffer tank enters the outer cavity through the first air inlet 105. In the inner cavity of the shell 101, the heat exchange tube 103 conducts heat to dry the compressed gas. The dried compressed gas is discharged through the first exhaust port 106 and enters through the connecting pipe. The first exhaust port 106 is connected with the second air inlet 203 through the connecting pipe, so that the dried compressed gas can enter the inner cavity of the tank body 201 for filtration. The PTFE filter membrane installed in the inner cavity of the tank body 201 can intercept impurities and particulate matter in the compressed gas, thereby ensuring the purity of the gas. The intercepted particulate matter falls into the inner cavity of the collecting bucket 202 and can be discharged through the impurity discharge port 205. The purified compressed gas is transported to the inner cavity of the storage tank 3 for storage through the second exhaust port 204.

[0034] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0035] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A carbon dioxide compression and purification system, comprising a heat exchanger (1), a purifier (2) and a storage tank (3), characterized in that: The heat exchanger (1) is used for drying compressed carbon dioxide gas, the purifier (2) is used for filtering the dried carbon dioxide gas, and the storage tank (3) is used for storing pure carbon dioxide gas. The heat exchanger (1) comprises a shell (101), an end cover (102), a heat exchange tube (103), a partition (104), a first air inlet (105), a first exhaust port (106), a recovery pipe (107) and a heat medium connection port (108). The heat exchange tube (103) is installed in the inner cavity of the shell (101), the end cover (102) is installed at one end of the shell (101), the first air inlet (105) and the first exhaust port (106) are both installed on the surface of the shell (101), and the recovery pipe (107) and the heat medium connection port (108) are both installed on the surface of the end cover (102).

2. The carbon dioxide compression and purification system according to claim 1, characterized in that: The partition plate (104) is fixed to the inner cavity of the end cover (102), and the inner cavity of the end cover (102) is divided into an air intake chamber and an air exhaust chamber by the partition plate (104).

3. The carbon dioxide compression and purification system according to claim 1, characterized in that: One end of the heat exchange tube (103) is in communication with the air intake chamber, and the other end of the heat exchange tube (103) is in communication with the air exhaust chamber.

4. The carbon dioxide compression and purification system according to claim 1, characterized in that: One end of the recovery pipe (107) penetrates the inner cavity of the end cover (102) and communicates with the exhaust chamber, and one end of the heat medium connection port (108) penetrates the inner cavity of the end cover (102) and communicates with the intake chamber.

5. The carbon dioxide compression and purification system according to claim 1, characterized in that: The first air inlet (105) is located at the bottom of the shell (101) and is in communication with the inner cavity of the shell (101); the first air outlet (106) is located at the top of the shell (101) and is in communication with the inner cavity of the shell (101).

6. The carbon dioxide compression and purification system according to claim 1, characterized in that: The purifier (2) comprises a tank body (201), a collecting hopper (202), a second air inlet (203), a second air outlet (204) and a debris outlet (205); the collecting hopper (202) is mounted at the bottom of the tank body (201); a PTFE filter membrane is mounted in the inner cavity of the tank body (201); the second air inlet (203) and the second air outlet (204) are both mounted on the surface of the tank body (201) and are in communication with the inner cavity of the tank body (201); and the debris outlet (205) is mounted at the bottom of the collecting hopper (202) and is in communication with the inner cavity of the collecting hopper (202).

7. The carbon dioxide compression and purification system according to claim 6, characterized in that: The first exhaust port (106) is connected to the air outlet of the compressor third-level cache tank through a connecting pipe, the first exhaust port (106) is connected to the second air inlet (203) through a connecting pipe, and the second exhaust port (204) is connected to the air inlet of the storage tank (3) through a connecting pipe.

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