Energy-saving drying device for gas liquefaction pretreatment for carbon dioxide recovery

Abstract

The utility model relates to the field of carbon dioxide recycling, in particular to an energy-saving drying device for gas liquefaction pretreatment for carbon dioxide recovery, which comprises a cooling box for cooling carbon dioxide, and a gas guide fan blade for guiding the carbon dioxide is arranged in the cooling box. The cooled carbon dioxide is compressed by the compression device, the compressed carbon dioxide is dried by the post-treatment device and then is discharged, a filter device is arranged between the compression device and the post-treatment device and comprises a protection box body for protecting a device main body, a filter pipeline is arranged in the protection box body, and the filter pipeline is communicated with the post-treatment device. A filter screen used for filtering large-particle impurities in compressed carbon dioxide is arranged in the filter pipeline, a moving rod used for operation is fixedly connected to the outer surface of the filter pipeline, one end of the moving rod penetrates through the protection box body and is located on the outer side of the protection box body, and the filter pipeline is operated to move in the protection box body through the moving rod. Through the components, the service life of the post-treatment device can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of carbon dioxide recovery and utilization, in particular to an energy-saving drying device for pre-liquefaction treatment of gas used for carbon dioxide recovery. Background Art

[0002] Existing drying devices have some shortcomings, such as high energy consumption, cumbersome installation process, and low replacement efficiency when maintenance or replacement of parts is required. These problems limit the efficiency and practicality of the drying device. Therefore, in order to solve these problems, a new carbon dioxide recovery and utilization drying device is proposed, which aims to provide a solution with simple structure, convenient operation, easy installation and disassembly, and improved efficiency.

[0003] A Chinese patent (CN221045777U) discloses a carbon dioxide recovery and drying device, in which carbon dioxide first passes through an air intake block and then enters a cooler for cooling. The cooled carbon dioxide then passes through an air intake block and enters a compressor for compression. A drying box is movably connected inside the protective box, and a heating block is attached to the upper surface of the drying box, which is connected to the air outlet of the hot air blower. The connection block is filled with desiccant. When the compressed carbon dioxide enters the drying box through a connecting pipe, the desiccant inside absorbs moisture from the carbon dioxide. If the desiccant absorbs too much water, it will affect the drying effect. At this time, the hot air generated by the hot air blower will heat the heating block, and then heat the desiccant inside the drying box to improve its use efficiency. In addition, a limiting structure composed of a U-shaped block, a card plate and a spring is provided inside the protective box, which is convenient for replacing the drying box when necessary, thereby improving the practicality of the device and the convenience of maintenance.

[0004] However, this patent still has the problem that there may be more impurities in the gas before drying, and the impurities after cleaning are not easy to clean. Utility Model Content

[0005] In view of the above problems, an energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery is provided, comprising a cooling box for cooling carbon dioxide, wherein air guide blades for guiding carbon dioxide are arranged in the cooling box, the cooled carbon dioxide is compressed by a compression device, and the compressed carbon dioxide is discharged after being dried by a post-processing device, a filtering device is arranged between the compression device and the post-processing device, the filtering device comprises a protection box body for protecting the filtering device, a filtering pipe is arranged in the protection box body, a filter net for filtering large particles of impurities in the compressed carbon dioxide is arranged in the filtering pipe, a moving rod for operation is fixedly connected to the outer surface of the filtering pipe, one end of the moving rod passes through the protection box body and is located outside the protection box body, and the filtering pipe is moved in the protection box body by operating the moving rod.

[0006] Preferably, the filtering pipeline is connected to the compression device through an intake pipeline, and the filtering pipeline is connected to the post-treatment device through an outlet pipeline. The filtering pipeline switches between the connection states with the compression device and the post-treatment device according to the movement of the moving rod to achieve a passage or a break.

[0007] Preferably, a sliding groove is formed on the side surface of the protection box body. The intake pipeline and the outlet pipeline are slidably connected to the protection box body through the sliding groove. By pulling the moving rod, the filtering pipeline drives the intake pipeline and the outlet pipeline to slide in the sliding groove.

[0008] Preferably, an intake port blocking block is arranged on one side of the intake port of the protection box body. Pulling the moving rod drives the filtering pipeline to disconnect from the compression device until the intake port blocking block closes the intake pipeline, so as to prevent the carbon dioxide in the filtering pipeline from overflowing from the intake pipeline in the open circuit state.

[0009] Preferably, after the outlet pipeline is disconnected from the post-treatment device, it is connected to a high-pressure water pipe. At this time, the intake pipeline is blocked by the intake port blocking block, and water flow will not flow out from the intake pipeline. A garbage cleaning outlet is arranged at the bottom of the filtering pipeline, and the water flow in the high-pressure water pipe flushes the garbage on the filter screen out through the garbage cleaning outlet.

[0010] Preferably, a drying device is arranged in the post-treatment device.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows:

[0012] 1. By adding a filtering device between the compression device and the post-treatment device, the present utility model effectively removes large-particle impurities in the compressed carbon dioxide gas, avoids potential damage to the drying device caused by these impurities, and significantly extends the service life of the drying device. In addition, the addition of the filtering operation improves the purity of the carbon dioxide gas, provides higher-quality raw material gas for subsequent drying treatment, thereby improving the efficiency of the entire drying process and the quality of the final product.

[0013] 2. The filtering pipeline of the present utility model is designed to be movable. By operating the moving rod, the passage or break state can be flexibly switched between the compression device and the post-treatment device as needed. This design not only simplifies the operation process, but also makes the equipment maintenance and cleaning more convenient, reduces the downtime caused by equipment failures or impurity blockages, and improves the operation efficiency and reliability of the entire system.

[0014] 3. The utility model integrates a drying device in the post-treatment device and adopts a variety of drying technologies, such as hot air drying and adsorption drying, etc., to meet the requirements of different working conditions and material characteristics. This integrated design makes the entire carbon dioxide recovery and drying process more compact and efficient, reduces energy loss, and through the design of the garbage cleaning outlet, realizes the automatic cleaning of the filter screen, further improving the automation level of the equipment and the convenience of maintenance. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0016] Figure 2 is a top view of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0017] Figure 3 is a side view of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0018] Figure 4 is a three-dimensional view of the filter device of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0019] Figure 5 is a three-dimensional view of the filter pipe of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0020] Figure 6 is a three-dimensional view showing the position of the filter screen of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0021] Figure 7 is a top view of the filter pipe of an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery.

[0022] Figure 8 is an energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery Figure 7 Cross-sectional view along A-A.

[0023] The reference numerals in the figure are: 1, cooling box; 11, air guiding fan blade; 2, compression device; 3, filter device; 31, filter pipe; 311, filter screen; 312, moving rod; 32, protection box body; 321, sliding groove; 322, air inlet blocking block; 33, air inlet pipe; 34, air outlet pipe; 35, garbage cleaning outlet; 36, high-pressure water pipe; 4, post-treatment device. Detailed Implementation Manner

[0024] To further understand the features, technical means, specific purposes, and functions achieved by the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Referring to Figures 1-8 : An energy-saving drying device for pre-treatment of gas liquefaction in carbon dioxide recovery, comprising a cooling box 1 for cooling carbon dioxide. There is a gas guiding fan blade 11 in the cooling box 1 for guiding carbon dioxide. The cooled carbon dioxide is compressed by a compression device 2, and the compressed carbon dioxide is dried by a post-treatment device 4 and then discharged. A filtering device 3 is arranged between the compression device 2 and the post-treatment device 4. The filtering device 3 includes a protective box body 32 for protecting the filtering device 3. A filtering pipeline 31 is arranged in the protective box body 32. There is a filter screen 311 in the filtering pipeline 31 for filtering large particle impurities in the compressed carbon dioxide. The outer surface of the filtering pipeline 31 is fixedly connected with a moving rod 312 for operation. One end of the moving rod 312 penetrates through the protective box body 32 and is located outside the protective box body 32. The filtering pipeline 31 is operated to move in the protective box body 32 through the moving rod 312.

[0026] In the carbon dioxide recovery device in the comparative document (CN221045777U), no filtering operation is carried out before drying, which may cause the drying device to fail too quickly. In response to this, the present utility model performs a filtering operation on the compressed carbon dioxide gas before the drying operation. This step can remove large particle impurities in the compressed carbon dioxide gas to the greatest extent. First, the carbon dioxide gas enters the cooling box 1, and the cooling box 1 is equipped with a gas guiding fan blade 11 for guiding the flow of carbon dioxide. Then, the cooling box 1 cools the carbon dioxide gas. The cooled carbon dioxide is then sent to the compression device 2 for compression. The compressed carbon dioxide contains large particle impurities that may affect the subsequent treatment process, so it needs to be purified through the filtering device 3 arranged between the compression device 2 and the post-treatment device 4. The filtering device 3 includes a protective box body 32, and a filtering pipeline 31 is installed in the protective box body 32. A filter screen 311 is arranged inside the pipeline, and these filter screens 311 are responsible for intercepting and filtering out large particle impurities in the compressed carbon dioxide. For the convenience of operation, the outer surface of the filtering pipeline 31 is fixedly connected with a moving rod 312. One end of the moving rod 312 passes through the protective box body 32 and extends to the outside, so that the operator can control the movement of the filtering pipeline 31 in the protective box body 32 through the moving rod 312. After such treatment, the dried carbon dioxide can be safely discharged to complete the entire recovery and drying process.

[0027] Referring to Figures 1-5The filtering pipeline 31 is connected to the compression device 2 through the intake pipeline 33, and the filtering pipeline 31 is connected to the post-treatment device 4 through the outlet pipeline 34. According to the movement of the moving rod 312, the filtering pipeline 31 switches between the connection states with the compression device 2 and the post-treatment device 4 to achieve a passage or a break.

[0028] The filtering pipeline 31 is connected to the compression device 2 through the intake pipeline 33 to receive the compressed carbon dioxide gas. Subsequently, the filtering pipeline 31 is connected to the post-treatment device 4 through the outlet pipeline 34 to transport the filtered gas to the drying process. The core component is the filtering pipeline 31, whose position can be adjusted according to the operation of the moving rod 312. When the moving rod 312 pushes the filtering pipeline 31 to move to the position connected to the compression device 2, a passage is formed to allow the gas to flow; on the contrary, when the filtering pipeline 31 moves to the disconnected position, a break is formed to cut off the gas flow.

[0029] Refer to Figure 4 A sliding groove 321 is formed on the side surface of the protective box body 32. The intake pipeline 33 and the outlet pipeline 34 are slidably connected to the protective box body 32 through the sliding groove 321. By pulling the moving rod 312, the filtering pipeline 31 drives the intake pipeline 33 and the outlet pipeline 34 to slide in the sliding groove 321.

[0030] The design of the sliding groove 321 on the side surface of the protective box body 32 enables the intake pipeline 33 and the outlet pipeline 34 to be slidably connected to the protective box body 32 through the sliding groove 321. When the moving rod 312 is pulled, the filtering pipeline 31 drives the connected intake pipeline 33 and outlet pipeline 34 to slide in the sliding groove 321. This design allows the filtering pipeline 31 to be connected or disconnected from the compression device 2 or the post-treatment device 4 as needed to achieve the switching between a passage and a break. In this way, the device can flexibly control the on-off of the gas according to the operation requirements to adapt to different working conditions, achieving the purpose of energy conservation and efficiency improvement.

[0031] Refer to Figure 1 An intake port blocking block 322 is arranged on one side of the intake port of the protective box body 32. Pulling the moving rod 312 drives the filtering pipeline 31 to disconnect from the compression device 2 until the intake port blocking block 322 closes the intake pipeline 33, so as to prevent the carbon dioxide in the filtering pipeline 31 from overflowing from the intake pipeline 33 in the break state.

[0032] On the side of the protection box body 32 close to the intake pipe 33, an intake port blocking block 322 is designed. When the filter pipe 31 is disconnected from the compression device 2 driven by the moving rod 312, the intake port blocking block 322 will immediately block the intake pipe 33. Such a design ensures that when the connection between the filter pipe 31 and the compression device 2 is disconnected, that is, in an open circuit state, the carbon dioxide in the filter pipe 31 will not be pushed by the pressure, thus avoiding the situation of carbon dioxide overflowing through the intake pipe 33. This not only ensures the airtightness of the device, but also prevents the disorderly emission of gas, improving the safety and efficiency of the entire system.

[0033] Refer to Figures 1-8 : After the outlet pipe 34 is disconnected from the post-treatment device 4, it is connected to the high-pressure water pipe 36. At this time, the intake pipe 33 is blocked by the intake port blocking block 322, and the water flow will not flow out from the intake pipe 33. A garbage cleaning outlet 35 is provided at the bottom of the filter pipe 31, and the water flow in the high-pressure water pipe 36 flushes the garbage on the filter net 311 out through the garbage cleaning outlet 35.

[0034] After the outlet pipe 34 is disconnected from the post-treatment device 4, it will be connected to the high-pressure water pipe 36. At this time, the intake pipe 33 is effectively blocked by the intake port blocking block 322, ensuring that the water flow in the high-pressure water pipe 36 will not flow back into the intake pipe 33. A garbage cleaning outlet 35 is specially designed at the bottom of the filter pipe 31 for collecting and discharging the impurities accumulated during the filtering process. The water flow in the high-pressure water pipe 36 flushes the filter net 311, washes off the garbage attached to the filter net 311, and then these garbage are discharged through the garbage cleaning outlet 35, thus completing the cleaning process of the filter net 311. This design not only improves the cleaning efficiency of the drying device, but also helps to maintain the efficient operation of the entire system.

[0035] Refer to Figure 1 : A drying device is provided in the post-treatment device 4.

[0036] The drying device can be hot air drying: using heated air as the drying medium, and increasing the temperature of carbon dioxide through heat exchange, so as to enhance its water evaporation capacity.

[0037] Adsorption drying: using adsorbents such as silica gel and activated carbon to absorb the moisture in carbon dioxide to achieve the purpose of drying.

[0038] Drum drying: The material contacts with hot air on the surface of the heated drum, and the moisture of the material is evaporated by the rotation of the drum.

[0039] The above embodiments merely represent one or several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.

Claims

1. An energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery, comprising a cooling box (1) for cooling carbon dioxide, wherein the cooling box (1) has air guide blades (11) for guiding carbon dioxide, wherein the cooled carbon dioxide is compressed by a compression device (2), and the compressed carbon dioxide is dried by a post-treatment device (4) and then discharged, wherein: A filter device (3) is arranged between the compression device (2) and the post-processing device (4), the filter device (3) comprising a protection box body (32) for protecting the filter device (3), a filter pipe (31) being arranged in the protection box body (32), a filter screen (311) being arranged in the filter pipe (31) for filtering large particle impurities in the compressed carbon dioxide, a moving rod (312) being fixedly connected to the outer surface of the filter pipe (31) for operation, one end of the moving rod (312) passing through the protection box body (32) and being located outside the protection box body (32), and the filter pipe (31) is moved in the protection box body (32) by operating the moving rod (312).

2. The energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery according to claim 1, characterized in that: The filter pipe (31) is connected to the compression device (2) via an air intake pipe (33), and the filter pipe (31) is connected to the post-processing device (4) via an air outlet pipe (34). The filter pipe (31) switches between connection states with the compression device (2) and the post-processing device (4) according to the movement of the moving rod (312), thereby realizing a circuit or a disconnection.

3. The energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery according to claim 2, characterized in that: A sliding groove (321) is provided on the side of the protection box body (32), and the air inlet pipe (33) and the air outlet pipe (34) are slidably connected to the protection box body (32) through the sliding groove (321). By pulling the moving rod (312), the filter pipe (31) drives the air inlet pipe (33) and the air outlet pipe (34) to slide in the sliding groove (321).

4. The energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery according to claim 3, characterized in that: The protection box body (32) is provided with an air inlet blocking block (322) on one side of the air inlet, and the moving rod (312) is pulled to disconnect the filter pipe (31) from the compression device (2) until the air inlet blocking block (322) seals the air inlet pipe (33), thereby achieving the purpose of preventing the carbon dioxide in the filter pipe (31) from overflowing from the air inlet pipe (33) in the disconnected state.

5. The energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery according to claim 4, characterized in that: The air outlet pipe (34) is connected to the high-pressure water pipe (36) after being disconnected from the post-processing device (4). At this time, the air inlet pipe (33) is blocked by the air inlet blocking block (322), and water does not flow out of the air inlet pipe (33). A garbage cleaning outlet (35) is provided at the bottom of the filter pipe (31), and the water flow in the high-pressure water pipe (36) flushes the garbage on the filter screen (311) out through the garbage cleaning outlet (35).

6. The energy-saving drying device for pre-liquefaction treatment of gas for carbon dioxide recovery according to claim 1, characterized in that: The post-processing device (4) is provided with a drying device.

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