Rectification device for recovering and purifying high-purity carbon dioxide

Abstract

The utility model relates to the technical field of carbon dioxide purification, and discloses a rectification device for recovering and purifying high-purity carbon dioxide, which comprises a device shell and a gas inlet end, and the end part of the gas inlet end is communicated with a guide pipe; a positioning hole is formed in the front face of the first annular connecting plate, guide rods are inserted in the periphery of the outer side of the first annular connecting plate, the surfaces of the guide rods are sleeved with extrusion springs, and inclined face insertion columns are installed at the bottom ends of the guide rods; positioning conical rods are installed on the periphery of the back face of the second annular connecting plate, and inserting holes are formed in the outer surfaces of the positioning conical rods. According to the rectification device for recycling and purifying the high-purity carbon dioxide, a guide pipe is communicated with an air inlet end, a second annular connecting plate is attached to a first annular connecting plate, a positioning conical rod is inserted into a positioning hole to drive a slope insertion column to move to extrude an extrusion spring, the slope insertion column corresponds to an insertion hole in position, and the slope insertion column is inserted into the insertion hole under the action of the extrusion spring; and the guide pipe is connected with the air inlet end.

Description

A distillation apparatus for recovering and purifying high-purity carbon dioxide Technical Field

[0001] This utility model relates to the field of carbon dioxide purification technology, specifically a distillation apparatus for recovering and purifying high-purity carbon dioxide. Background Technology

[0002] Carbon dioxide, chemical formula: CO2, molecular weight: 44.01 g / mol, physical state: colorless and odorless gas at room temperature and pressure, density: approximately 1.98 kg / m³ 3 (Heavier than air), solubility: soluble in water (forming carbonic acid), solubility decreases with increasing temperature. Sources and production of carbon dioxide include: biological respiration, natural decomposition, geological activity, ocean release, fossil fuel combustion, industrial production, and land-use change. Distillation equipment is widely used in carbon dioxide recovery and purification. High-purity carbon dioxide is a highly purified carbon dioxide gas. At room temperature and pressure, it is a colorless, odorless gas and a weakly acidic gas. Due to its unique physical and chemical properties, high-purity carbon dioxide can be applied in fields including: food and beverage manufacturing, medicine, chemical industry, electronics manufacturing processes, fire protection, and agriculture.

[0003] Traditional distillation units for recovering and purifying high-purity carbon dioxide typically use external and internal threads to connect the external pipeline to the unit's inlet, allowing carbon dioxide to be transported to the unit for purification. However, this threaded connection has limitations in pressure resistance and sealing. To address these issues, some distillation units for recovering and purifying high-purity carbon dioxide use flanges to connect the external pipeline to the inlet, offering higher pressure resistance and better sealing. However, this method requires multiple sets of bolts, increasing the difficulty of assembly and disassembly and raising operating costs. Therefore, this paper proposes a distillation unit for recovering and purifying high-purity carbon dioxide. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a distillation apparatus for recovering and purifying high-purity carbon dioxide, thereby solving the aforementioned technical problems that not only increase the difficulty of disassembly and assembly but also increase the cost of use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a distillation apparatus for recovering and purifying high-purity carbon dioxide, comprising:

[0008] The device housing includes a support base located at the bottom of the device housing. The left and right sides of the device housing are respectively provided with a drain end and an air inlet end, and the top of the device housing is provided with an exhaust end. The inner cavity of the device housing is provided with a reboiler, a condenser, control components and auxiliary components, and a conduit is connected to the end of the air inlet end.

[0009] The first annular connecting plate is located at the outer end of the air inlet. Positioning holes are evenly provided on the front side of the first annular connecting plate. Guide rods are inserted around the outer perimeter of the first annular connecting plate. A compression spring is fitted on the surface of each guide rod. An inclined insert is installed at the bottom end of each guide rod. The bottom end of each inclined insert penetrates the inner wall of the first annular connecting plate and extends into the positioning hole.

[0010] The second annular connecting plate is located at the air outlet end of the duct, and an extension plate is connected to the center of the back of the second annular connecting plate. Positioning cone rods are installed around the back of the second annular connecting plate, and insertion holes are opened on the outer surface of the positioning cone rods. When the conduit is connected to the air inlet, the conduit causes the second annular connecting plate to fit against the first annular connecting plate at the air inlet. The second annular connecting plate then causes the extension plate to be inserted into the inner cavity of the first annular connecting plate. The second annular connecting plate causes the positioning cone rod to be inserted into the positioning hole of the first annular connecting plate. The conical end of the positioning cone rod can drive the inclined end of the inclined insert rod to move outward on the first annular connecting plate, causing the inclined insert rod to compress the compression spring. When the positioning cone rod moves a certain distance along the positioning hole, the position of the inclined insert rod corresponds to the insertion hole. The inclined insert rod is reset under the action of the compression spring, causing the inclined insert rod to be inserted into the interior of the insertion hole, thus connecting the conduit to the air inlet. When the conduit is separated from the air inlet, the guide rod pulled outward on the first annular connecting plate causes the inclined insert rod to be pulled out from the insertion hole and separated from the positioning cone rod. This causes the second annular connecting plate to separate the positioning cone rod from the positioning hole of the first annular connecting plate. Carbon dioxide enters the device housing along the conduit and sequentially through the second annular connecting plate, the extension plate, the first annular connecting plate, and the air inlet. This device uses... The reboiler is used to partially vaporize the liquid at the bottom of the column and send it back to the distillation column; the condenser is used to condense the vapor at the top of the column into liquid, with part of the condensate serving as the top product and the remainder as reflux liquid returned to the top of the column to continue participating in the distillation process; the control components include a temperature controller and a reflux ratio controller, which are used to precisely control the temperature during the distillation process and to adjust the ratio of reflux liquid to top product, respectively; the auxiliary components include a desulfurization mechanism and an adsorption mechanism, which are used to remove impurities such as sulfides from the feed gas and to adsorb other impurities from the carbon dioxide gas, respectively. The carbon dioxide purification mechanisms in this device are all existing technologies, so they will not be described in detail here. On the one hand, the connection between the first annular connecting plate and the second annular connecting plate does not require bolts and has a simple structure, which not only reduces the difficulty of disassembly and assembly but also reduces the cost of use; on the other hand, the second annular connecting plate drives the extension plate to be inserted into the inner cavity of the first annular connecting plate, so that carbon dioxide is introduced into the inlet end through the extension plate, thereby avoiding leakage of carbon dioxide between the first annular connecting plate and the second annular connecting plate.

[0011] Preferably, the drain end and the air inlet end are at opposite heights and positions on the device housing, and both the drain end and the air outlet end are equipped with sealing plugs. These sealing plugs can seal and block the drain end and the air outlet end, thereby preventing leakage of liquid or gas from either end.

[0012] Preferably, limiting rods are added to both the front and back of the guide rod, and the limiting rods are connected to the inclined insert. The inclined insert can drive the limiting rods to move in the same direction.

[0013] Preferably, limiting holes are evenly formed around the outer surface of the first annular connecting plate, and the shapes of the limiting holes correspond to those of the limiting rods. When the inclined insert is reset under the action of the compression spring, and the inclined insert is inserted into the insertion hole, the limiting rod is reset along the limiting hole to the inner cavity of the first annular connecting plate. The guide rod drives the inclined insert and the limiting rod to rotate on the first annular connecting plate, causing the limiting rod to be misaligned with the limiting hole. The top of the limiting rod slides against the top inner wall of the first annular connecting plate, thereby ensuring the connection stability between the first annular connecting plate and the second annular connecting plate.

[0014] Preferably, the two ends of the compression spring are respectively attached to the inner wall of the first annular connecting plate and the top of the inclined insert. When the inclined insert moves toward the inner cavity of the first annular connecting plate, it compresses the compression spring, and at the same time, the compression spring can drive the inclined insert to perform a reset operation on the inner wall of the first annular connecting plate.

[0015] Preferably, the bottom of the inclined insert is designed to be inclined, and the position and shape of the inclined insert correspond to those of the insertion hole. This allows the cone end of the positioning cone rod to move the inclined insert outward through the inclined bottom end of the inclined insert.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a distillation apparatus for recovering and purifying high-purity carbon dioxide, which has the following beneficial effects:

[0018] This distillation apparatus for recovering and purifying high-purity carbon dioxide works by connecting a conduit to the inlet. The conduit causes a second annular connecting plate to align with a first annular connecting plate at the inlet. The second annular connecting plate then causes an extension plate to insert into the inner cavity of the first annular connecting plate. The second annular connecting plate also causes a positioning cone rod to insert into a positioning hole in the first annular connecting plate. The conical end of the positioning cone rod, through the inclined end of a beveled insert, moves the beveled insert outward on the first annular connecting plate, compressing a compression spring. After the positioning cone rod moves a certain distance along the positioning hole, the beveled insert aligns with the insertion hole. Under the action of the compression spring, the beveled insert returns to its original position, inserting into the insertion hole, thus connecting the conduit to the inlet. When the conduit is separated from the inlet, the guide rod on the first annular connecting plate pulls the inclined insert out of the insertion hole and separates it from the positioning cone rod. This causes the second annular connecting plate to separate the positioning cone rod from the positioning hole of the first annular connecting plate. Carbon dioxide enters the device housing along the conduit and sequentially through the second annular connecting plate, the extension plate, the first annular connecting plate, and the inlet. The connection between the first and second annular connecting plates does not require bolts and has a simple structure, which not only reduces the difficulty of disassembly and assembly but also reduces the cost of use. At the same time, the second annular connecting plate drives the extension plate to be inserted into the inner cavity of the first annular connecting plate, allowing carbon dioxide to be introduced into the inlet through the extension plate, thereby preventing carbon dioxide leakage between the first and second annular connecting plates. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 is a schematic diagram of the overall right side view of this utility model;

[0021] Figure 3 is a schematic diagram of the separation structure between the air inlet end and the duct of this utility model;

[0022] Figure 4 is a schematic cross-sectional view of the first annular connecting plate of this utility model.

[0023] Figure 5 is an enlarged schematic diagram of the guide rod and its connection structure of this utility model;

[0024] Figure 6 is a schematic diagram of the second annular connecting plate structure of this utility model.

[0025] In the diagram: 1. Device housing; 2. Support base; 3. Drain end; 4. Air inlet end; 5. Exhaust end; 6. Sealing plug; 7. Conduit; 8. First annular connecting plate; 9. Second annular connecting plate; 10. Extension plate; 11. Positioning cone rod; 12. Insertion hole; 13. Positioning hole; 14. Guide rod; 15. Inclined insert; 16. Compression spring; 17. Limiting rod; 18. Limiting hole. Detailed Implementation

[0026] 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.

[0027] This utility model provides a technical solution: a distillation device for recovering and purifying high-purity carbon dioxide, comprising: (see Figures 1, 2, 3, 4, and 6) a device housing 1 and a support base 2 disposed at the bottom of the device housing 1, wherein the left and right sides of the device housing 1 are respectively provided with a drain end 3 and an air inlet end 4, and an exhaust end 5 is provided at the top of the device housing 1, wherein a reboiler, a condenser, a control component and an auxiliary component are respectively provided in the inner cavity of the device housing 1, and a conduit 7 is connected to the end of the air inlet end 4;

[0028] The first annular connecting plate 8 is located at the outer end of the air inlet 4. The front of the first annular connecting plate 8 is evenly provided with positioning holes 13. Guide rods 14 are inserted around the outer perimeter of the first annular connecting plate 8. Compression springs 16 are sleeved on the surface of the guide rods 14. Inclined inserts 15 are installed at the bottom of the guide rods 14. The bottom of the inclined inserts 15 extends through the inner wall of the first annular connecting plate 8 and into the positioning holes 13.

[0029] The second annular connecting plate 9 is located at the air outlet end of the conduit 7. An extension plate 10 is connected to the center of the back side of the second annular connecting plate 9, and positioning cone rods 11 are installed around the back side of the second annular connecting plate 9. Insertion holes 12 are formed on the outer surface of each positioning cone rod 11. When the conduit 7 is connected to the air inlet end 4, the conduit 7 drives the second annular connecting plate 9 to fit against the first annular connecting plate 8 of the air inlet end 4. The second annular connecting plate 9 drives the extension plate 10 to be inserted into the inner cavity of the first annular connecting plate 8. The second annular connecting plate 9 drives the positioning cone rods 11 to be inserted into the positioning holes 13 of the first annular connecting plate 8. The conical end of the positioning cone rod 11 can be driven by the inclined end of the inclined insert post 15 to move outward on the first annular connecting plate 8, causing the inclined insert post 15 to compress the compression spring 16. After the positioning cone rod 11 moves a certain distance along the positioning hole 13... The inclined insert 15 corresponds to the insertion hole 12. Under the action of the compression spring 16, the inclined insert 15 is reset, allowing it to be inserted into the insertion hole 12, thus connecting the conduit 7 to the air inlet 4. When the conduit 7 separates from the air inlet 4, the guide rod 14 on the first annular connecting plate 8 pulls the inclined insert 15 out of the insertion hole 12 and separates it from the positioning cone rod 11. This causes the second annular connecting plate 9 to separate the positioning cone rod 11 from the positioning hole 13 of the first annular connecting plate 8. Carbon dioxide flows along the conduit 7 and sequentially through the second annular connecting plate 9 and the extension... Plate 10, the first annular connecting plate 8, and the gas inlet 4 enter the device housing 1. The reboiler used in this device is used to partially vaporize the liquid at the bottom of the column and send it back to the distillation column. The condenser is used to condense the vapor at the top of the column into liquid, with part of the condensate serving as the top product and the remainder as reflux returning to the top of the column to continue participating in the distillation process. The control components include a temperature controller and a reflux ratio controller, which are used to precisely control the temperature during the distillation process and to adjust the ratio of reflux to the top product, respectively. The auxiliary components include a desulfurization mechanism and an adsorption mechanism, which are used to remove impurities such as sulfides from the feed gas, respectively. The carbon dioxide purification mechanism in this device is based on existing technology and will not be described in detail here. On the one hand, the connection between the first annular connecting plate 8 and the second annular connecting plate 9 does not require bolts and has a simple structure, which not only reduces the difficulty of disassembly and assembly but also reduces the cost of use. On the other hand, the second annular connecting plate 9 drives the extension plate 10 to be inserted into the inner cavity of the first annular connecting plate 8, so that the carbon dioxide is introduced into the air inlet 4 through the extension plate 10, thereby avoiding the leakage of carbon dioxide between the first annular connecting plate 8 and the second annular connecting plate 9.

[0030] Please refer to Figures 1 and 2. The height and position of the drain end 3 and the air inlet end 4 on the device housing 1 are opposite, and both the drain end 3 and the exhaust end 5 are equipped with sealing plugs 6. The sealing plugs 6 can seal and block the drain end 3 and the exhaust end 5, thereby preventing liquid or gas from leaking from the drain end 3 or the exhaust end 5.

[0031] Please refer to Figure 5. Limiting rods 17 are added to both the front and back of the guide rod 14, and the limiting rods 17 are connected to the inclined insertion post 15. The inclined insertion post 15 can drive the limiting rod 17 to move in the same direction. Limiting holes 18 are evenly distributed around the outer surface of the first annular connecting plate 8, and the shapes of the limiting holes 18 correspond to those of the limiting rod 17. When the inclined insertion post 15 is reset under the action of the compression spring 16, allowing it to be inserted into the insertion hole 12, the limiting rod 17 resets along the limiting hole 18 to the inner cavity of the first annular connecting plate 8. The guide rod 14 drives the inclined insertion post 15 and the limiting rod 17 to rotate on the first annular connecting plate 8, causing the limiting rod 17 to be misaligned with the limiting hole 18. The top end of the limiting rod 17 slides against the inner top wall of the first annular connecting plate 8, thereby ensuring the connection stability between the first annular connecting plate 8 and the second annular connecting plate 9. The two ends of the compression spring 16 are respectively attached to the inner wall of the first annular connecting plate 8 and the top of the inclined insert 15. When the inclined insert 15 moves toward the inner cavity of the first annular connecting plate 8, it compresses the compression spring 16. At the same time, the compression spring 16 can drive the inclined insert 15 to perform a reset operation on the inner wall of the first annular connecting plate 8. The bottom of the inclined insert 15 is designed to be inclined, and the position and shape of the inclined insert 15 correspond to those of the insertion hole 12. This allows the conical end of the positioning cone rod 11 to drive the inclined insert 15 to move outward through the inclined bottom end of the inclined insert 15.

[0032] This solution: When the conduit 7 is connected to the air inlet 4, the conduit 7 drives the second annular connecting plate 9 to fit against the first annular connecting plate 8 of the air inlet 4. The second annular connecting plate 9 drives the extension plate 10 to be inserted into the inner cavity of the first annular connecting plate 8. The second annular connecting plate 9 drives the positioning cone rod 11 to be inserted into the positioning hole 13 of the first annular connecting plate 8. The cone end of the positioning cone rod 11 can drive the inclined insert post 15 to move outward on the first annular connecting plate 8 through the inclined end of the inclined insert post 15, and cause the inclined insert post 15 to compress the compression spring 16. When the positioning cone rod 11 moves along the fixed... After the positioning hole 13 moves to a certain extent, the inclined insert 15 corresponds to the position of the insertion hole 12. Under the action of the compression spring 16, the inclined insert 15 is reset, allowing it to be inserted into the insertion hole 12, thus connecting the conduit 7 to the air inlet 4. When the conduit 7 separates from the air inlet 4, the guide rod 14 on the first annular connecting plate 8 pulls the inclined insert 15 out of the insertion hole 12 and separates it from the positioning cone rod 11. This causes the second annular connecting plate 9 to separate the positioning cone rod 11 from the positioning hole 13 of the first annular connecting plate 8, and carbon dioxide flows along the guide... Pipe 7 passes sequentially through the second annular connecting plate 9, the extension plate 10, the first annular connecting plate 8, and the inlet end 4 into the device housing 1. The reboiler used in this device is used to partially vaporize the liquid at the bottom of the column and return it to the distillation column; the condenser is used to condense the vapor at the top of the column into liquid, with part of the condensate serving as the top product and the remainder as reflux returning to the top of the column to continue participating in the distillation process; the control components include a temperature controller and a reflux ratio controller, used to precisely control the temperature during the distillation process and to adjust the ratio of reflux to the top product, respectively; auxiliary components include a desulfurizer. The structure and adsorption mechanism are used to remove impurities such as sulfides from the raw material gas and to adsorb other impurities from carbon dioxide gas. When the inclined insert 15 is reset under the action of the compression spring 16, and the inclined insert 15 is inserted into the interior of the insertion hole 12, the limiting rod 17 is reset along the limiting hole 18 to the inner cavity of the first annular connecting plate 8. The guide rod 14 drives the inclined insert 15 and the limiting rod 17 to rotate on the first annular connecting plate 8, so that the limiting rod 17 is misaligned with the limiting hole 18, and the top end of the limiting rod 17 slides against the top inner wall of the first annular connecting plate 8.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distillation apparatus for recovering and purifying high-purity carbon dioxide, characterized in that, include: The device housing (1) and the support base (2) are provided at the bottom of the device housing (1). The left and right sides of the device housing (1) are respectively provided with a drain end (3) and an air inlet end (4). An exhaust end (5) is provided at the top of the device housing (1). The inner cavity of the device housing (1) is respectively provided with a reboiler, a condenser, a control component and an auxiliary component. A conduit (7) is connected to the end of the air inlet end (4). A first annular connecting plate (8) is provided at the outer end of the air inlet end (4). The front of the first annular connecting plate (8) is evenly provided with positioning holes (13). The outer side of the first annular connecting plate (8) is provided with four positioning holes (13). A guide rod (14) is inserted around the perimeter, and a compression spring (16) is fitted on the surface of the guide rod (14). An inclined insert (15) is installed at the bottom end of the guide rod (14), and the bottom end of the inclined insert (15) extends through the inner wall of the first annular connecting plate (8) and into the positioning hole (13). A second annular connecting plate (9) is set at the air outlet of the conduit (7), and an extension plate (10) is connected to the center of the back of the second annular connecting plate (9). A positioning cone rod (11) is installed around the back of the second annular connecting plate (9), and a insertion hole (12) is opened on the outer surface of the positioning cone rod (11).

2. The distillation apparatus for recovering and purifying high-purity carbon dioxide according to claim 1, characterized in that: The drain end (3) and the air inlet end (4) are at opposite heights and positions on the device housing (1), and both the drain end (3) and the air outlet end (5) are provided with sealing plugs (6).

3. The distillation apparatus for recovering and purifying high-purity carbon dioxide according to claim 1, characterized in that: The guide rod (14) is provided with a limiting rod (17) on both the front and back sides, and the limiting rod (17) is connected to the inclined insert (15).

4. The distillation apparatus for recovering and purifying high-purity carbon dioxide according to claim 3, characterized in that: Limiting holes (18) are evenly opened around the outer surface of the first annular connecting plate (8), and the shape of the limiting holes (18) corresponds to that of the limiting rod (17).

5. A distillation apparatus for recovering and purifying high-purity carbon dioxide according to claim 1, characterized in that: The two ends of the compression spring (16) are respectively attached to the inner wall of the first annular connecting plate (8) and the top of the inclined insert (15).

6. The distillation apparatus for recovering and purifying high-purity carbon dioxide according to claim 1, characterized in that: The bottom of the inclined insert (15) is designed to be inclined, and the position and shape of the inclined insert (15) correspond to those of the insertion hole (12).

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