Carbon dioxide drying and dehydrating device

Abstract

This utility model discloses a carbon dioxide drying and dehydration device, including a base plate. Four support columns are fixedly connected to the outer surface of the base plate. A processing shell is fixedly connected to the top of each of the four support columns. A mounting plate is fixedly connected to the outer surface of two of the support columns. A regeneration mechanism is provided inside the processing shell and on the outer surface of the mounting plate. Two conduits are fixedly connected to the outer surface of the processing shell. This device utilizes a cyclone separator and a condenser to remove free water and large particulate impurities from carbon dioxide. A modified molecular sieve plate preferentially adsorbs polar water, while a highly active silica gel plate adsorbs residual trace amounts of water. The hydrophobic coating inside the adsorbent particle plate reduces false saturation caused by contact between carbon dioxide and the adsorbent surface, extending the single adsorption cycle. Nitrogen gas generated by a nitrogen generator carries the desorbed water into a discharge pipe, from which it is discharged from the processing shell.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide technology, and in particular to a carbon dioxide drying and dehydration device. Background Technology

[0002] Carbon dioxide is a carbon oxide compound with the chemical formula CO2. At room temperature and pressure, it is a colorless and odorless gas, or a colorless and odorless gas with a slightly acidic taste in its aqueous solution. It is also a common greenhouse gas and a component of air. Carbon dioxide is denser than air under standard conditions and is soluble in water. Before carbon dioxide is used, it needs to be dried and dehydrated using equipment. The core purpose is to remove the water (gaseous water or free water) to meet the strict requirements of carbon dioxide purity and phase for different application scenarios.

[0003] However, most existing carbon dioxide drying and dehydration devices use ordinary metal mesh or bag filters, which have wide pore size distribution and poor hydrophobicity. They are prone to caking under high humidity conditions, further reducing filtration efficiency. Therefore, we propose a carbon dioxide drying and dehydration device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a carbon dioxide drying and dehydration 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 carbon dioxide drying and dehydration device includes a base plate, four support columns fixedly connected to the outer surface of the base plate, a processing shell fixedly connected to the top of the four support columns, an mounting plate fixedly connected to the outer surface of two of the support columns, a regeneration mechanism provided inside the processing shell and on the outer surface of the mounting plate, two conduits fixedly connected to the outer surface of the processing shell, a first control valve provided inside the conduit, a pretreatment mechanism fixedly connected to the outer surface of the base plate, a modified molecular sieve plate, a highly active silica gel plate, and an adsorbent particle plate inside the processing shell.

[0007] In a further embodiment, the regeneration mechanism includes a nitrogen generator, the output of which is fixedly connected to a main pipe.

[0008] In a further embodiment, the outer surface of the main tube is fixedly connected to three branch tubes, one end of each branch tube penetrating the interior of the processing shell.

[0009] In a further embodiment, one end of each of the branch pipes is fixedly connected to a backflush box, the outer surface of each backflush box is fixedly connected to the interior of the processing shell, and a second control valve is provided inside each of the branch pipes.

[0010] In a further embodiment, the pretreatment mechanism includes a mounting frame and a mounting base. A cyclone separator is fixedly mounted on the outer surface of the mounting frame, and a condenser is fixedly mounted on the outer surface of the mounting base. The output end of the cyclone separator is fixedly connected to the input end of the condenser through a drain pipe, and the output end of the condenser is fixedly connected to one end of one of the conduits.

[0011] In a further embodiment, a discharge pipe is fixedly connected to the outer surface of the processing shell, and a third control valve is provided inside the discharge pipe.

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

[0013] This device utilizes a cyclone separator and a condenser to remove free water and large particulate impurities from carbon dioxide. The modified molecular sieve plate preferentially adsorbs polar water, while the highly active silica gel plate adsorbs residual trace amounts of water. The hydrophobic coating inside the adsorbent granule plate reduces false saturation caused by contact between carbon dioxide and the adsorbent surface, extending the single adsorption cycle. The nitrogen generated by the nitrogen generator carries the desorbed water into the discharge pipe, which then exits from the processing shell. This solves the problem of caking that easily occurs under high humidity conditions when using ordinary metal mesh or bag filters for drying and dehydration. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a carbon dioxide drying and dehydration device.

[0015] Figure 2 This is a cross-sectional view of a carbon dioxide drying and dehydration device.

[0016] Figure 3 Carbon dioxide drying and dehydration device Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure 4 This is a side sectional view of a carbon dioxide drying and dehydration device.

[0018] In the diagram: 1. Base plate; 2. Support column; 3. Processing shell; 4. Regeneration mechanism; 5. Conduit; 6. First control valve; 7. Pretreatment mechanism; 8. Modified molecular sieve plate; 9. High-activity silica gel plate; 10. Adsorbent granule plate; 11. Discharge pipe; 12. Third control valve; 13. Mounting plate; 401. Nitrogen generator; 402. Main pipe; 403. Branch pipe; 404. Backflush box; 405. Second control valve; 701. Mounting bracket; 702. Mounting base; 703. Cyclone separator; 704. Condenser. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Please see Figure 1-4In this utility model, a carbon dioxide drying and dehydration device includes a base plate 1. Four support columns 2 are fixedly connected to the outer surface of the base plate 1. The tops of the four support columns 2 are fixedly connected to a processing shell 3. The outer surfaces of two support columns 2 are fixedly connected to a mounting plate 13. The interior of the processing shell 3 and the outer surface of the mounting plate 13 are provided with a regeneration mechanism 4. The regeneration mechanism 4 includes a nitrogen generator 401. The output end of the nitrogen generator 401 is fixedly connected to a main pipe 402. The outer surface of the main pipe 402 is fixedly connected to three branch pipes 403. One end of each branch pipe 403 penetrates the interior of the processing shell 3. One end of each branch pipe 403 is fixedly connected to a backflush box 404. The outer surface of each backflush box 404 is fixedly connected to the interior of the processing shell 3. Each branch pipe 403 is provided with a second control valve 405. Using the second control valve 405, the operator can easily control the ventilation status of the three branch pipes 403 respectively.

[0023] Two conduits 5 are fixedly connected to the outer surface of the processing shell 3. Each conduit 5 is equipped with a first control valve 6. A pretreatment mechanism 7 is fixedly connected to the outer surface of the base plate 1. The pretreatment mechanism 7 includes a mounting frame 701 and a mounting base 702. A cyclone separator 703 is fixedly mounted on the outer surface of the mounting frame 701, and a condenser 704 is fixedly mounted on the outer surface of the mounting base 702. The output end of the cyclone separator 703 is fixedly connected to the input end of the condenser 704 through a drain pipe. The output end of the condenser 704 is fixedly connected to one end of one of the conduits 5. The cyclone separator 703 and condenser 704 are designed to remove free water and large particulate impurities from carbon dioxide. The interior of the treatment shell 3 is equipped with a modified molecular sieve plate 8, a highly active silica gel plate 9, and an adsorbent particle plate 10. The outer surface of the treatment shell 3 is fixedly connected to a discharge pipe 11, and a third control valve 12 is installed inside the discharge pipe 11. The adsorbent particle plate 10 contains a large amount of particulate adsorbent, and its surface is coated with a hydrophobic coating, which can reduce the false saturation caused by the contact between carbon dioxide and the adsorbent surface.

[0024] The working principle of this utility model is as follows:

[0025] In use, first, fix the base plate 1 in a suitable position through the mounting holes. Then, the carbon dioxide to be dried and dehydrated enters the cyclone separator 703 through its inlet. The carbon dioxide is then transported to the condenser 704 through the guide pipe, and finally transported to the processing shell 3 through the outlet of the condenser 704 and the conduit 5. At this time, the carbon dioxide will pass through the modified molecular sieve plate 8, the highly active silica gel plate 9, and the adsorbent particle plate 10 in sequence. The modified molecular sieve plate 8 can preferentially adsorb polar moisture, the highly active silica gel plate 9 can adsorb residual trace moisture, and the hydrophobic coating inside the adsorbent particle plate 10 can reduce the contact between carbon dioxide and the adsorbent surface. The pseudo-saturation extends the single adsorption cycle, thereby drying and dehydrating the carbon dioxide. The treated carbon dioxide can be discharged by opening the first control valve 6 through the controller. When the modified molecular sieve plate 8, the high-activity silica gel plate 9, and the adsorbent particle plate 10 are saturated, the nitrogen generator 401 is started through the controller. The nitrogen generator 401 will deliver the generated nitrogen gas to the backflush box 404 through the main pipe 402 and the branch pipe 403, and then desorb the surface moisture of the modified molecular sieve plate 8, the high-activity silica gel plate 9, and the adsorbent particle plate 10. The desorbed moisture enters the discharge pipe 11 with the nitrogen gas. Finally, the moisture can be discharged by controlling the third control valve 12 through the controller.

[0026] 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.

[0027] 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 carbon dioxide drying and dehydration device, characterized in that: The system includes a base plate (1), four support columns (2) are fixedly connected to the outer surface of the base plate (1), and a processing shell (3) is fixedly connected to the top of the four support columns (2). An installation plate (13) is fixedly connected to the outer surface of two of the support columns (2). A regeneration mechanism (4) is provided inside the processing shell (3) and on the outer surface of the installation plate (13). Two conduits (5) are fixedly connected to the outer surface of the processing shell (3). A first control valve (6) is provided inside each conduit (5). A pretreatment mechanism (7) is fixedly connected to the outer surface of the base plate (1). A modified molecular sieve plate (8) is provided inside the processing shell (3). A highly active silica gel plate (9) is provided inside the processing shell (3). An adsorbent particle plate (10) is provided inside the processing shell (3).

2. The carbon dioxide drying and dehydration apparatus according to claim 1, characterized in that: The regeneration mechanism (4) includes a nitrogen generator (401), and the output end of the nitrogen generator (401) is fixedly connected to a main pipe (402).

3. The carbon dioxide drying and dehydration apparatus according to claim 2, characterized in that: The outer surface of the main tube (402) is fixedly connected to three branch tubes (403), one end of each branch tube (403) penetrating the interior of the processing shell (3).

4. The carbon dioxide drying and dehydration apparatus according to claim 3, characterized in that: One end of each of the branch pipes (403) is fixedly connected to a backflush box (404), the outer surface of each backflush box (404) is fixedly connected to the interior of the processing shell (3), and a second control valve (405) is provided inside each of the branch pipes (403).

5. The carbon dioxide drying and dehydration apparatus according to claim 1, characterized in that: The pretreatment mechanism (7) includes a mounting frame (701) and a mounting base (702). A cyclone separator (703) is fixedly mounted on the outer surface of the mounting frame (701), and a condenser (704) is fixedly mounted on the outer surface of the mounting base (702). The output end of the cyclone separator (703) is fixedly connected to the input end of the condenser (704) through a drain pipe. The output end of the condenser (704) is fixedly connected to one end of one of the conduits (5).

6. The carbon dioxide drying and dehydration apparatus according to claim 1, characterized in that: The outer surface of the processing shell (3) is fixedly connected to a discharge pipe (11), and a third control valve (12) is provided inside the discharge pipe (11).

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