A high-purity methane low-temperature filtration device

Abstract

This utility model discloses a high-purity methane low-temperature fine filtration device, including a heavy-weight removal tower, a light-weight removal tower on the right side of the heavy-weight removal tower, a processing tank fixedly connected to the left side of the heavy-weight removal tower, a connecting pipe fixedly connected to the upper surface of the heavy-weight removal tower, the output end of the connecting pipe fixedly connected to the left side of the light-weight removal tower, and a condenser heat exchanger and a first control valve fixedly connected to the upper surface of the connecting pipe. This device, through its feed pipe, refrigeration unit, heavy-weight removal tower, light-weight removal tower, PLC editing panel, electric heating tube, connecting pipe, and condenser heat exchanger, can pre-cool methane feedstock at low temperature and achieve dual-tower distillation of methane feedstock, effectively improving the separation efficiency and purification purity of the methane feedstock. Furthermore, through the processing tank, activated carbon adsorption cylinder, and molecular sieve, it can pre-treat the methane feedstock by adsorption and filtration of impurities such as moisture and carbon dioxide, achieving effective separation of methane from other impurities and facilitating effective methane purification.

Description

Technical Field

[0001] This utility model relates to the field of methane purification technology, and in particular to a low-temperature fine filtration device for high-purity methane. Background Technology

[0002] Methane purification refers to the process of increasing the methane concentration in a complex feed gas containing various impurities to a specific purity level by utilizing the differences in the physical or chemical properties of the components in a mixture and employing a series of engineering techniques. Its core objective is to remove impurities and obtain high-purity or specific-specification methane products that meet downstream application standards.

[0003] Current methane purification equipment has certain shortcomings. Before purification, impurities inside the methane feedstock cannot be pre-treated. Instead, the feedstock is placed directly inside the distillation column, which increases the purification process and makes the purification process more complex. This also makes it difficult to achieve high-quality methane purification. To address these issues, we propose a high-purity methane low-temperature fine filtration device. Utility Model Content

[0004] The purpose of this invention is to provide a high-purity methane low-temperature fine filtration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-purity methane low-temperature filtration device includes a heavy-weight removal tower, a light-weight removal tower on the right side of the heavy-weight removal tower, a processing tank fixedly connected to the left side of the heavy-weight removal tower, a connecting pipe fixedly connected to the upper surface of the heavy-weight removal tower, the output end of the connecting pipe fixedly connected to the left side of the light-weight removal tower, a condenser heat exchanger and a first control valve fixedly connected to the upper surface of the connecting pipe, a second control valve fixedly connected to the outer surface of the output end of the processing tank, an activated carbon adsorption cylinder fixedly connected to the inner wall of the processing tank, two molecular sieves fixedly connected to the inner wall of the processing tank, the two molecular sieves being located on the left and right sides of the activated carbon adsorption cylinder respectively, pressure display instruments fixedly embedded on the back of both the heavy-weight removal tower and the light-weight removal tower, a high-pressure exhaust valve fixedly embedded on the upper surface of the light-weight removal tower, electric heating tubes fixedly embedded inside both the heavy-weight removal tower and the light-weight removal tower, and discharge pipes fixedly connected to the bottom surfaces of both the heavy-weight removal tower and the light-weight removal tower, with a discharge valve fixedly connected to the outer surface of each discharge pipe.

[0007] In a further embodiment, a feed pipe is fixedly connected to the upper surface of the processing tank, and a refrigeration unit is fixedly connected to the outer surface of the feed pipe.

[0008] In a further embodiment, a PLC editing panel is fixedly connected to the front of the deweighting tower, and the PLC editing panel is electrically connected to the refrigeration unit, the electric heating tube and the condensing heat exchanger via wires.

[0009] In a further embodiment, an arc-shaped support rod is fixedly connected to the bottom surface of the processing tank, and the right end of the arc-shaped support rod is fixedly connected to the left side of the deweighting tower.

[0010] In a further embodiment, a sealed door is installed on the left side of the processing tank, and an opening and closing handle is fixedly connected to the left side of the sealed door.

[0011] In a further embodiment, both the outer surface of the heavy removal tower and the outer surface of the light removal tower are fixedly connected to support rings, and the bottom surface of each support ring is fixedly connected to a ring of support legs, and the upper surface of each support leg is provided with mounting holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device, through its feed pipe, refrigeration unit, heavy-weight removal tower, light-weight removal tower, PLC editing panel, electric heating tube, connecting pipe, and condenser heat exchanger, can pre-cool methane feedstock at low temperature and achieve dual-tower distillation of methane feedstock, effectively improving the separation efficiency and purification purity of methane feedstock. Furthermore, through its processing tank, activated carbon adsorption cylinder, and molecular sieve, it can pre-treat the methane feedstock by adsorbing and filtering impurities such as moisture and carbon dioxide, achieving effective separation of methane from other impurities and facilitating efficient methane purification. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a high-purity methane low-temperature filtration device.

[0015] Figure 2 This is a rear view of the deweighting tower in a high-purity methane cryogenic filtration unit.

[0016] Figure 3 This is a side view of the processing tank in a high-purity methane cryogenic filtration unit.

[0017] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the deweighting tower in a high-purity methane cryogenic filtration unit.

[0018] Figure 5 This is a top sectional view of the processing tank in a high-purity methane cryogenic filtration unit.

[0019] In the diagram: 1. Heavy removal tower; 2. Light removal tower; 3. Processing tank; 31. Activated carbon adsorption cylinder; 32. Molecular sieve; 4. Connecting pipe; 5. Condensing heat exchanger; 6. First control valve; 7. High-pressure exhaust valve; 8. Second control valve; 9. Feed pipe; 10. Refrigeration unit; 11. PLC editing panel; 12. Arc-shaped support rod; 13. Support ring; 14. Support leg; 141. Mounting hole; 15. Discharge pipe; 151. Discharge valve; 16. Pressure display instrument; 17. Sealed door; 171. Opening handle; 18. Electric heating element. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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.

[0023] Please see Figure 1-5In this utility model, a high-purity methane low-temperature fine filtration device includes a heavy-weight removal tower 1, a light-weight removal tower 2 located on the right side of the heavy-weight removal tower 1, a processing tank 3 fixedly connected to the left side of the heavy-weight removal tower 1, a connecting pipe 4 fixedly connected to the upper surface of the heavy-weight removal tower 1, the output end of the connecting pipe 4 fixedly connected to the left side of the light-weight removal tower 2, a condenser heat exchanger 5 and a first control valve 6 fixedly connected to the upper surface of the connecting pipe 4, a second control valve 8 fixedly connected to the outer surface of the output end of the processing tank 3, and an activated carbon adsorption cylinder 31 fixedly connected to the inner wall of the processing tank 3. Two molecular sieves 32 are fixedly connected to the inner wall of the slurry tank 3. The two molecular sieves 32 are located on the left and right sides of the activated carbon adsorption cylinder 31, respectively. Pressure display instruments 16 are fixedly embedded on the back of the heavy removal tower 1 and the light removal tower 2. A high-pressure exhaust valve 7 is fixedly embedded on the upper surface of the light removal tower 2. Electric heating tubes 18 are fixedly embedded inside the heavy removal tower 1 and the light removal tower 2. Discharge pipes 15 are fixedly connected to the bottom surface of the heavy removal tower 1 and the bottom surface of the light removal tower 2. Discharge valves 151 are fixedly connected to the outer surface of each discharge pipe 15.

[0024] The upper surface of the processing tank 3 is fixedly connected to the feed pipe 9, and the outer surface of the feed pipe 9 is fixedly connected to the refrigeration unit 10, which can pre-cool the methane feedstock to facilitate its subsequent purification. The front of the deweighting tower 1 is fixedly connected to the PLC editing panel 11. The PLC editing panel 11 is electrically connected to the refrigeration unit 10, the electric heating tube 18 and the condenser heat exchanger 5 through wires, which can conveniently control this fine filtration device and facilitate the methane purification operation.

[0025] An arc-shaped support rod 12 is fixedly connected to the bottom surface of the treatment tank 3. The right end of the arc-shaped support rod 12 is fixedly connected to the left side of the de-weighting tower 1, which can support and fix the treatment tank 3, effectively increasing the stability of the treatment tank 3. A sealed door 17 is installed on the left side of the treatment tank 3. An opening and closing handle 171 is fixedly connected to the left side of the sealed door 17, which can easily open the sealed door 17, facilitating the cleaning and maintenance of the treatment tank 3. Support rings 13 are fixedly connected to the outer surfaces of the de-weighting tower 1 and the de-lighting tower 2. A ring-shaped support leg 14 is fixedly connected to the bottom surface of each support ring 13. An installation hole 141 is opened on the upper surface of each support leg 14, which can install and fix the de-weighting tower 1 and the de-lighting tower 2, facilitating the stable use of this fine filtration device.

[0026] The working principle of this utility model is as follows:

[0027] In operation, methane feedstock is injected into the processing tank 3 through the feed pipe 9, and the methane feedstock is pre-cooled at low temperature by the refrigeration unit 10. Then, the methane feedstock is pre-treated by adsorption and filtration of impurities such as moisture and carbon dioxide by molecular sieve 32 and activated carbon adsorption cylinder 31. The methane feedstock then flows into the heavy removal tower 1, and the electric heating tube 18 is controlled by the PLC editing panel 11 to moderately heat the interior of the heavy removal tower 1, so that the methane is vaporized and enters the connecting pipe 4. Ethane, propane and other heavier components with higher boiling points settle to the bottom of the heavy removal tower 1. At the same time, the first control valve 6 is opened and the condenser heat exchanger 5 is controlled to cool and liquefy the methane gas, which then flows into the light removal tower 2. The PLC editing panel 11 is then controlled to operate another electric heating tube 18 to moderately heat the interior of the light removal tower 2, removing light component impurities with lower boiling points than methane, such as nitrogen, oxygen and hydrogen. The liquid methane falls to the bottom of the light removal tower 2 for centralized storage, thus completing the effective purification of methane.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-purity methane low-temperature fine filtration device, characterized in that: The system includes a heavy removal tower (1), a light removal tower (2) on the right side of the heavy removal tower (1), a processing tank (3) fixedly connected to the left side of the heavy removal tower (1), a connecting pipe (4) fixedly connected to the upper surface of the heavy removal tower (1), the output end of the connecting pipe (4) fixedly connected to the left side of the light removal tower (2), a condenser heat exchanger (5) and a first control valve (6) fixedly connected to the upper surface of the connecting pipe (4), a second control valve (8) fixedly connected to the outer surface of the output end of the processing tank (3), and an activated carbon adsorption cylinder (31) fixedly connected to the inner wall of the processing tank (3). Two molecular sieves (32) are connected, and the two molecular sieves (32) are located on the left and right sides of the activated carbon adsorption cylinder (31), respectively. Pressure display instruments (16) are fixedly embedded on the back of the heavy removal tower (1) and the light removal tower (2). A high-pressure exhaust valve (7) is fixedly embedded on the upper surface of the light removal tower (2). Electric heating tubes (18) are fixedly embedded inside the heavy removal tower (1) and the light removal tower (2). A discharge pipe (15) is fixedly connected to the bottom surface of the heavy removal tower (1) and the bottom surface of the light removal tower (2). A discharge valve (151) is fixedly connected to the outer surface of each discharge pipe (15).

2. The high-purity methane low-temperature fine filtration device according to claim 1, characterized in that: The upper surface of the processing tank (3) is fixedly connected to the feed pipe (9), and the outer surface of the feed pipe (9) is fixedly connected to the refrigeration unit (10).

3. The high-purity methane low-temperature fine filtration device according to claim 1, characterized in that: The front of the weight removal tower (1) is fixedly connected to a PLC editing panel (11), which is electrically connected to the refrigeration unit (10), the electric heating tube (18) and the condensing heat exchanger (5) via wires.

4. The high-purity methane low-temperature fine filtration device according to claim 1, characterized in that: An arc-shaped support rod (12) is fixedly connected to the bottom surface of the processing tank (3), and the right end of the arc-shaped support rod (12) is fixedly connected to the left side of the deweight tower (1).

5. The high-purity methane low-temperature fine filtration device according to claim 1, characterized in that: A sealed door (17) is installed on the left side of the processing tank (3), and an opening and closing handle (171) is fixedly connected to the left side of the sealed door (17).

6. The high-purity methane low-temperature fine filtration device according to claim 1, characterized in that: The outer surfaces of the heavy removal tower (1) and the light removal tower (2) are both fixedly connected with support rings (13). The bottom surface of each support ring (13) is fixedly connected with a ring-shaped arrangement of support legs (14). The upper surface of each support leg (14) is provided with an installation hole (141).

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