A device for purifying carbon dioxide gas.

Abstract

This utility model discloses a device for purifying carbon dioxide gas, relating to the field of carbon dioxide gas purification technology. The device includes a support frame, with a distillation column mounted on the inner wall of the support frame. An output pipe is located at the bottom of the distillation column, and a secondary filtration assembly is installed at one end of the output pipe. The secondary filtration assembly includes a cryogenic liquid pump for conveying liquefied carbon dioxide. One end of the cryogenic liquid pump is connected to the output pipe, and a branch pipe is located at one end of the cryogenic liquid pump. An electric valve is installed at one end of the branch pipe. A filter element is installed on the inner wall of the branch pipe, and a collection pipe is installed at one end of the branch pipe. A collection tank is installed at the bottom of the collection pipe. This utility model can significantly improve the purity of carbon dioxide gas through preliminary separation by the distillation column and further purification by the secondary filtration assembly.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide gas purification technology, specifically to a device for carbon dioxide gas purification. Background Technology

[0002] Based on the differences in volatility (boiling point) of the components in the mixture, different components have different vapor pressures at the same temperature. This allows for the efficient separation and purification of the mixture through multiple partial vaporization and condensation processes.

[0003] Existing carbon dioxide purification methods may not be able to achieve high purity requirements, especially when processing feed gas containing multiple impurities. Single purification methods, such as using only a distillation column, are insufficient to completely separate all impurities. Furthermore, filter components in traditional purification devices may be difficult to disassemble or clean, leading to high maintenance costs, long maintenance times, and reduced production efficiency. Utility Model Content

[0004] This invention provides a device for purifying carbon dioxide gas, which has the advantages of improving purification progress and working efficiency. It solves the problem that existing carbon dioxide purification methods may not be able to achieve high purity requirements, especially when processing raw gas containing multiple impurities. Single purification methods, such as using only a distillation column, are difficult to completely separate all impurities, and the filter components in traditional purification devices may be difficult to disassemble or clean, resulting in high maintenance costs, long maintenance time, and reduced production efficiency.

[0005] To improve purification progress and work efficiency, this utility model provides the following technical solution: a carbon dioxide gas purification device, including a support frame, a distillation column installed on the inner wall of the support frame, an output pipe at the bottom of the distillation column, and a secondary filtration assembly installed at one end of the output pipe, wherein:

[0006] The secondary filtration assembly includes a cryogenic liquid pump for conveying liquefied carbon dioxide. One end of the cryogenic liquid pump is connected to an output pipe. A branch pipe is provided at one end of the cryogenic liquid pump, and an electric valve is installed at one end of the branch pipe.

[0007] The inner wall of the branch pipe is provided with a filter element, a collection pipe is installed at one end of the branch pipe, and a collection tank is installed on the bottom surface of the collection pipe.

[0008] As a preferred embodiment of this utility model, a controller is provided on one side of the support frame, the controller is electrically connected to the cryogenic liquid pump, the controller is electrically connected to the electric valve, and an installation platform is installed on the bottom surface of the cryogenic liquid pump.

[0009] As a preferred embodiment of this utility model, the inner wall of the support frame is fixedly connected to the lower outer surface of the distillation column, the bottom surface of the distillation column is fixedly connected to the top surface of the output pipe, and the inner wall of the distillation column is in communication with the inner wall of the output pipe.

[0010] As a preferred embodiment of this utility model, the other end of the output tube is fixedly connected to the input end of the cryogenic liquid pump, the output tube is connected to the connecting tube through the cryogenic liquid pump, and one end of the connecting tube is fixedly connected to the output end of the cryogenic liquid pump.

[0011] As a preferred embodiment of this utility model, the other end of the cryogenic liquid pump is fixedly connected to two branch pipes, the inner wall of the branch pipes is in communication with the inner wall of the connecting pipe, and an electric valve is installed at one end of each branch pipe.

[0012] As a preferred embodiment of this utility model, the electric valve is used to control the closing of the branch pipes, and a filter element is installed on the inner wall of each branch pipe.

[0013] As a preferred embodiment of this utility model, the other ends of the two branch pipes are fixedly connected to one end of a collection pipe, the inner walls of the two branch pipes are in communication with the inner wall of the collection pipe, and the other end of the collection pipe is connected to the top surface of the collection tank.

[0014] Compared with the prior art, the present invention provides a device for purifying carbon dioxide gas, which has the following beneficial effects:

[0015] This carbon dioxide gas purification device can significantly improve the purity of carbon dioxide gas through preliminary separation in a distillation column and further purification in a secondary filtration component. The separate piping setup allows for control of individual and simultaneous delivery of one or two lines without affecting operation, further improving the efficiency and purity of carbon dioxide purification. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of this utility model from another angle;

[0018] Figure 3 This is a schematic diagram of the secondary filtration component of this utility model.

[0019] Figure 4 This is a schematic diagram of the secondary filtration component of this utility model from another angle;

[0020] Figure 5 This utility model provides Figure 4 Enlarged schematic diagram of part A in the middle.

[0021] In the diagram: 1. Support frame; 2. Distillation column; 3. Output pipe; 4. Controller; 5. Secondary filtration assembly; 50. Mounting platform; 51. Cryogenic pump; 52. Connecting pipe; 53. Branch pipe; 54. Electric valve; 55. Filter element; 56. Main pipe; 57. Collection tank. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see Figures 1-2 This utility model discloses a device for purifying carbon dioxide gas, including a support frame 1, a distillation column 2 installed on the inner wall of the support frame 1, an output pipe 3 provided at the bottom of the distillation column 2, and a secondary filter assembly 5 installed at one end of the output pipe 3, wherein:

[0024] The secondary filtration assembly 5 includes a cryogenic liquid pump 51 for conveying liquefied carbon dioxide. One end of the cryogenic liquid pump 51 is connected to the output pipe 3. A branch pipe 53 is provided at one end of the cryogenic liquid pump 51, and an electric valve 54 is installed at one end of the branch pipe 53.

[0025] The inner wall of the branch pipe 53 is provided with a filter element 55, and a collection pipe 56 is installed at one end of the branch pipe 53. A collection tank 57 is installed on the bottom surface of the collection pipe 56.

[0026] A controller 4 is provided on one side of the support frame 1. The controller 4 is electrically connected to the cryogenic liquid pump 51 and to the electric valve 54. An installation platform 50 is installed on the bottom surface of the cryogenic liquid pump 51.

[0027] The inner wall of the support frame 1 is fixedly connected to the lower outer surface of the distillation column 2, the bottom surface of the distillation column 2 is fixedly connected to the top surface of the output pipe 3, and the inner wall of the distillation column 2 is interconnected with the inner wall of the output pipe 3.

[0028] Cryogenic pump 51 pressurizes liquefied carbon dioxide and delivers it to branch pipe 53 through connecting pipe 52. In branch pipe 53, the liquefied carbon dioxide undergoes secondary filtration through filter element 55 to remove impurities. Electric valve 54 is opened to allow the filtered liquefied carbon dioxide to enter the main pipe 56. Main pipe 56 collects the filtered liquefied carbon dioxide into collection tank 57. Controller 4 monitors the operating status of cryogenic pump 51 and electric valve 54, adjusting flow rate and pressure as needed. The filter element 55 is checked regularly for blockage and replaced or cleaned promptly. Example 2

[0029] Based on the above embodiment 1, please refer to Figures 3-5 The other end of the output pipe 3 is fixedly connected to the input end of the cryogenic liquid pump 51. The output pipe 3 is connected to the connecting pipe 52 through the cryogenic liquid pump 51. One end of the connecting pipe 52 is fixedly connected to the output end of the cryogenic liquid pump 51.

[0030] The other end of the cryogenic liquid pump 51 is fixedly connected to two branch pipes 53. The inner wall of the branch pipe 53 is connected to the inner wall of the connecting pipe 52. An electric valve 54 is installed at one end of each branch pipe 53.

[0031] Electric valve 54 is used to control the closing of branch pipe 53, and a filter element 55 is installed on the inner wall of each branch pipe 53.

[0032] The other ends of the two branch pipes 53 are fixedly connected to one end of a summing pipe 56. The inner walls of the two branch pipes 53 and the inner wall of the summing pipe 56 are interconnected. The other end of the summing pipe 56 is connected to the top surface of the collection tank 57.

[0033] Start distillation column 2 to begin operation and perform preliminary separation and purification of carbon dioxide gas. Preheat cryogenic liquid pump 51 and related pipelines to ensure normal operation in a cryogenic environment. When liquefied carbon dioxide is produced at the bottom of distillation column 2, it is delivered to cryogenic liquid pump 51 through output pipe 3.

[0034] The working principle and usage process of this utility model are as follows: Ensure that the support frame 1 is securely installed and the distillation column 2 is correctly fixed to the inner wall of the support frame 1. Check whether the connections of the output pipe 3, cryogenic liquid pump 51, branch pipe 53, electric valve 54, filter element 55, main pipe 56, and collection tank 57 are tight and leak-free. Electrically connect the controller 4 to the cryogenic liquid pump 51 and electric valve 54 to ensure normal signal transmission.

[0035] Start-up and preheating: Start distillation column 2 to begin operation and perform preliminary separation and purification of carbon dioxide gas. Preheat cryogenic liquid pump 51 and related pipelines to ensure normal operation in cryogenic environments.

[0036] Liquefied carbon dioxide transport: When liquefied carbon dioxide is generated at the bottom of the distillation column 2, it is transported to the cryogenic liquid pump 51 through the output pipe 3.

[0037] The cryogenic liquid pump 51 pressurizes the liquefied carbon dioxide and delivers it to the branch pipe 53 through the connecting pipe 52.

[0038] Filtration and Collection: The liquefied carbon dioxide undergoes secondary filtration through filter element 55 in the branch pipe 53 to remove impurities.

[0039] Open the electric valve 54 to allow the filtered liquefied carbon dioxide to enter the collection pipe 56.

[0040] The collection tube 56 collects the filtered liquefied carbon dioxide into the collection tank 57.

[0041] Monitoring and Adjustment: Use controller 4 to monitor the operating status of cryogenic pump 51 and electric valve 54, and adjust flow rate and pressure as needed. Regularly check the filter element 55 for clogging and replace or clean it promptly.

[0042] Shutdown and Maintenance: When the liquefied carbon dioxide in collection tank 57 reaches the predetermined amount, close the electric valve 54 and the cryogenic liquid pump 51. Stop the operation of distillation column 2 and perform necessary maintenance and cleaning.

Claims

1. A device for purifying carbon dioxide gas, comprising a support frame (1), wherein a distillation column (2) is mounted on the inner wall of the support frame (1), characterized in that: The bottom end of the distillation column (2) is provided with an output pipe (3), and a secondary filter assembly (5) is installed at one end of the output pipe (3), wherein: The secondary filtration assembly (5) includes a cryogenic liquid pump (51) for conveying liquefied carbon dioxide. One end of the cryogenic liquid pump (51) is connected to the output pipe (3). A branch pipe (53) is provided at one end of the cryogenic liquid pump (51), and an electric valve (54) is installed at one end of the branch pipe (53). The inner wall of the branch pipe (53) is provided with a filter element (55), and a collection pipe (56) is installed at one end of the branch pipe (53). A collection tank (57) is installed on the bottom surface of the collection pipe (56).

2. The apparatus for purifying carbon dioxide gas according to claim 1, characterized in that: A controller (4) is provided on one side of the support frame (1). The controller (4) is electrically connected to the cryogenic liquid pump (51). The controller (4) is electrically connected to the electric valve (54). An installation platform (50) is installed on the bottom surface of the cryogenic liquid pump (51).

3. The apparatus for purifying carbon dioxide gas according to claim 2, characterized in that: The inner wall of the support frame (1) is fixedly connected to the lower outer surface of the distillation column (2), the bottom surface of the distillation column (2) is fixedly connected to the top surface of the output pipe (3), and the inner wall of the distillation column (2) is in communication with the inner wall of the output pipe (3).

4. The apparatus for purifying carbon dioxide gas according to claim 2, characterized in that: The other end of the output pipe (3) is fixedly connected to the input end of the cryogenic liquid pump (51). The output pipe (3) is connected to the connecting pipe (52) through the cryogenic liquid pump (51). One end of the connecting pipe (52) is fixedly connected to the output end of the cryogenic liquid pump (51).

5. The apparatus for purifying carbon dioxide gas according to claim 1, characterized in that: The other end of the cryogenic liquid pump (51) is fixedly connected to two branch pipes (53), the inner wall of the branch pipe (53) is in communication with the inner wall of the connecting pipe (52), and an electric valve (54) is installed at one end of each branch pipe (53).

6. The apparatus for purifying carbon dioxide gas according to claim 5, characterized in that: The electric valve (54) is used to control the closing of the branch pipe (53), and a filter element (55) is installed on the inner wall of each branch pipe (53).

7. The apparatus for purifying carbon dioxide gas according to claim 5, characterized in that: The other ends of the two branch pipes (53) are fixedly connected to one end of a collection pipe (56), the inner walls of the two branch pipes (53) and the inner wall of the collection pipe (56) are interconnected, and the other end of the collection pipe (56) is connected to the top surface of the collection tank (57).

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