Carbon dioxide recovery device

Abstract

The utility model relates to the technical field of carbon dioxide recovery, in particular to a carbon dioxide recovery device, which comprises a cyclone separator and is characterized in that the cyclone separator is communicated with a filter box, the filter box is communicated with a separator, the separator is communicated with a liquefying tank, the liquefying tank is communicated with a dry ice maker, and the dry ice maker is communicated with a dissolving tank. The top of the dry ice maker is communicated with a three-way pipe, one pipe orifice of the three-way pipe is communicated with the separator, a second pipe orifice of the three-way pipe is communicated with the dry ice maker, and a third pipe orifice of the three-way pipe is communicated with the dissolving tank VI; waste gas generated in the manufacturing process of the dry ice manufacturing machine can be injected into the separator, the gas is separated again and liquefied again, and the yield of dry ice and the utilization rate of carbon dioxide can be effectively increased; the dissolving tank is arranged, waste gas finally generated when the dry ice making machine makes dry ice is injected into the dissolving tank, carbon dioxide is absorbed through dissolving liquid and then discharged, the absorption and utilization rate of the carbon dioxide is further increased, and the finally discharged gas does not contain carbon dioxide.

Description

Technical Field

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

[0002] Carbon dioxide is a carbon oxide compound. When people enter an environment with a high concentration of carbon dioxide, they will quickly fall into a coma within seconds, experiencing symptoms such as loss of reflexes, incontinence, and vomiting. In addition, carbon dioxide has a warming effect, and increased carbon dioxide emissions will cause problems such as rising global temperatures and rising sea levels.

[0003] However, carbon dioxide is also an important gas with wide applications in many fields. Solid carbon dioxide (dry ice) is widely used for refrigerating dairy products, meat, frozen foods, and other perishable foods during transport. It is also used as a refrigerant in many industrial processes, such as crushing heat-sensitive materials, rubber polishing, metal cold treatment, shrink assembly of mechanical parts, and vacuum cold traps. Gaseous carbon dioxide is used for carbonizing soft drinks, pH control in water treatment processes, chemical processing, food preservation, inert protection in chemical and food processing processes, welding gases, plant growth stimulants, and as a diluent for sterilizing gases. Liquid carbon dioxide is used as a refrigerant, for low-temperature testing of aircraft, missiles, and electronic components, to improve oil well recovery, for rubber polishing, and to control chemical reactions. It can also be used as a fire extinguishing agent.

[0004] However, existing recycling devices are not very efficient at recovering carbon dioxide, and the final emitted gas may still contain a significant amount of carbon dioxide.

[0005] Therefore, this application provides a carbon dioxide recovery device to overcome the shortcomings of the prior art. Utility Model Content

[0006] The purpose of this invention is to solve the problem that existing recycling devices have low efficiency in recovering and utilizing carbon dioxide, and that the final emitted gas may still contain a large amount of carbon dioxide.

[0007] This utility model provides a carbon dioxide recovery device, including a cyclone separator. The cyclone separator is connected to a filter box. A separator is connected to the side of the filter box away from the cyclone separator. A liquefaction tank is connected to the side of the separator away from the filter box. A dry ice maker is connected to the side of the liquefaction tank away from the separator. A dissolving tank is connected to the side of the dry ice maker away from the liquefaction tank. A three-way pipe is connected to the top of the dry ice maker. One port of the three-way pipe is connected to the separator, the second port is connected to the dry ice maker, and the third port is connected to the dissolving tank.

[0008] The cyclone separator has an air inlet fixedly connected to one side and an air outlet fixedly connected to the top. The exhaust gas containing carbon dioxide enters the cyclone separator from the air inlet, is filtered and separated in the cyclone separator, and is discharged from the air outlet pipe.

[0009] The filter box is hollow, with a fixed connection to a pipe port one at the bottom and a fixed connection to a pipe port two at the top. At least one piece of filter cotton is fixed inside the filter box. The pipe port one is connected to the gas outlet via a pipeline. The filter cotton can also be replaced with a dry high-density sponge. The filter box is used to filter out fine impurities in the gas, preventing solid and liquid impurities in the gas from entering subsequent processes. The exhaust gas is filtered twice using a cyclone separator and a filter box, which removes solid and liquid impurities in the gas to a great extent, facilitating subsequent recycling.

[0010] The separator includes a housing 1. One end of the housing 1 is fixedly connected to a pipe port 3, the other end is fixedly connected to a pipe port 4, and the top is connected to a pipe port 5. The pipe port 3 is connected to a pipe port 2 via a pipeline. A baffle 1 and a baffle 2 are fixedly installed in the housing 1. The baffle 2 is located on the right side of the baffle 1. The baffle 1 has a plurality of slots that penetrate through the baffle 1. The baffle 1 and the baffle 2 divide the space in the housing 1 into three spaces: the left space to the left of the baffle 1, the middle space between the baffle 1 and the baffle 2, and the right space to the right of the baffle 2. Since the slots penetrate the baffle 1, the left space is connected to the middle space. Several separation tubes are installed inside the housing 1. One end of each separation tube is fixedly connected to the baffle 1, and the other end is located on the right side of the baffle 2. The outer periphery of each separation tube is fixedly connected to the baffle 2. The separation tube is hollow, closed at the left end, and open at the right end.

[0011] The pipe port four flange is connected to pipe three, and valve three is installed on pipe three. The flange at the end of pipe three away from pipe port four is connected to a liquefied tank. The liquefied tank includes a shell two. Two oppositely arranged connecting blocks are fixed on the inner wall of the shell two. The shell three is fixed between the two connecting blocks. The shell three is located inside the shell two, and there is a certain space between the two. One side of the shell two is connected to a cold medium inlet, and the other side is connected to a cold medium outlet. The top of the shell three is connected to pipe port six and pipe port seven, and the bottom is connected to a liquid outlet. The cold medium inlet and cold medium outlet are only connected to the shell two and do not contact the shell three. Pipe port six, pipe port seven, and liquid outlet penetrate the shell two and are only connected to the shell three. Pipe port six is ​​connected to the flange at the end of pipe three away from pipe port four.

[0012] The dry ice making machine has an inlet connected to the side near the liquefaction tank and a pipe eight connected to the top. A pipe four is provided between the liquefaction tank and the dry ice making machine. One end of the pipe four is connected to the outlet and the other end is connected to the inlet. A valve four is installed on the pipe four. The dry ice making machine is existing technology and will not be described in detail here.

[0013] The tee pipe is T-shaped, and its bottom port is connected to the eight flanges of the dry ice making machine. The other two ports of the tee pipe are connected to pipe one and pipe two respectively. The end of pipe one away from the tee pipe is connected to the four flanges. A valve is installed on pipe one.

[0014] The dissolving tank is fixedly connected to a pipe port nine on the side closest to the dry ice making machine, and a connecting pipe is fixedly connected to the top side away from the dry ice making machine. The end of the pipe two away from the tee pipe is connected to the flange of the pipe port nine. A valve two is installed on the pipe two. The dissolving tank contains a dissolving liquid that can dissolve carbon dioxide. The dissolving liquid can be a calcium hydroxide solution or a calcium oxide solution.

[0015] The beneficial effects of the carbon dioxide recovery device provided by this utility model are:

[0016] This utility model uses a cyclone separator and a filter box to perform secondary purification of waste gas, which can effectively remove solid and liquid impurities from the waste gas and facilitate subsequent recycling.

[0017] By setting baffle one and baffle two in the separator, and opening slots in baffle one, the purified gas can be smoothly separated from carbon dioxide by the separation tube in the separator, thereby improving the purity of carbon dioxide.

[0018] By setting up pipe one, the waste gas generated during the dry ice manufacturing process can be injected into the separator instead of being directly discharged. Instead, the gas is separated again and reliquefied, which can effectively increase the dry ice production and improve the utilization rate of carbon dioxide.

[0019] By adding a dissolving tank, the waste gas generated by the dry ice making machine is not directly emitted, but is injected into the dissolving tank. The carbon dioxide is absorbed by the dissolving liquid before being discharged, which can further improve the absorption and utilization rate of carbon dioxide, so that the final emitted gas does not contain carbon dioxide. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0021] Figure 2 This is a front view of an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional view of the filter box in an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional view of the separation tube according to an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the liquefaction tank according to an embodiment of the present invention.

[0025] Among them, 1. Cyclone separator; 11. Air inlet; 12. Air outlet; 2. Filter box; 21. Pipe port one; 22. Pipe port two; 23. Filter cotton; 3. Separator; 31. Shell one; 32. Pipe port three; 33. Pipe port four; 34. Pipe port five; 35. Baffle one; 36. Baffle two; 37. Groove; 38. Separation pipe; 4. Liquefaction tank; 41. Shell two; 42. Connecting block; 43. Shell three; 44. Cold medium inlet; 45. Cold medium outlet; 46. Pipe port six; 47. Pipe port seven; 48. Liquid outlet; 5. Dry ice making machine; 51. Liquid inlet; 52. Pipe port eight; 6. Dissolving tank; 61. Pipe port nine; 62. Connecting pipe; 7. T-pipe; 71. Pipe one; 72. Valve one; 73. Pipe two; 74. Valve two; 8. Pipe three; 81. Valve three; 9. Pipe four; 91. Valve four. Detailed Implementation

[0026] To make the technical means, technical features, utility model purpose and technical effects of this utility model easy to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model. Example 1

[0027] like Figures 1 to 5 As shown: A carbon dioxide recovery device includes a cyclone separator 1, the cyclone separator 1 is connected to a filter box 2, the side of the filter box 2 away from the cyclone separator 1 is connected to a separator 3, the side of the separator 3 away from the filter box 2 is connected to a liquefaction tank 4, the side of the liquefaction tank 4 away from the separator 3 is connected to a dry ice maker 5, the side of the dry ice maker 5 away from the liquefaction tank 4 is connected to a dissolving tank 6, the top of the dry ice maker 5 is connected to a three-way pipe 7, one port of the three-way pipe 7 is connected to the separator 3, the second port is connected to the dry ice maker 5, and the third port is connected to the dissolving tank 6.

[0028] like Figures 1 to 5As shown: One side of the cyclone separator 1 is fixedly connected to an air inlet 11, and the top is fixedly connected to an air outlet 12. The exhaust gas containing carbon dioxide enters the cyclone separator 1 from the air inlet 11, is filtered and separated in the cyclone separator 1, and is discharged from the air outlet pipe.

[0029] The filter box 2 is hollow, with a pipe 21 fixedly connected to its bottom and a pipe 22 fixedly connected to its top. At least one piece of filter cotton 23 is fixed inside the filter box 2. The pipe 21 is connected to the air outlet 12 through a pipeline. The filter cotton 23 can also be replaced with a dry high-density sponge. The filter box 2 is used to filter out fine impurities in the gas, preventing solid and liquid impurities in the gas from entering subsequent work. The cyclone separator 1 and the filter box 2 are used to filter the exhaust gas twice, which removes solid and liquid impurities in the gas to a great extent, facilitating subsequent recycling work.

[0030] The separator 3 includes a housing 31. One end of the housing 31 is fixedly connected to a pipe port 32, the other end is fixedly connected to a pipe port 33, and the top is connected to a pipe port 34. The pipe port 32 is connected to a pipe port 22 via a pipeline. A baffle 35 and a baffle 36 are fixedly installed in the housing 31. The baffle 36 is located on the right side of the baffle 35. The baffle 35 has a plurality of slots 37 that penetrate the baffle 35. The baffle 35 and the baffle 36 divide the space in the housing 31 into three spaces: the left space to the left of the baffle 35, the space to the left of the baffle 35, and the space to the right of the baffle 36. The middle space between baffle 35 and baffle 36, and the right space to the right of baffle 36, are connected to the middle space by the slot 37 penetrating baffle 35. Several separation tubes 38 are provided inside the housing 31. One end of the separation tube 38 is fixedly connected to baffle 35, and the other end is located on the right side of baffle 36. The outer periphery of the separation tube 38 is fixedly connected to baffle 36. The separation tube 38 is hollow, closed at the left end and open at the right end. The material of the separation tube 38 is one of polydimethylsiloxane membrane, poly4-methyl-1-pentene membrane, polyethersulfone membrane, and polyimide film.

[0031] The flange at pipe port 33 is connected to pipe 8, and valve 81 is installed on pipe 8. The flange at the end of pipe 8 away from pipe port 33 is connected to liquefied tank 4. Liquefied tank 4 includes shell 2 41. Two oppositely arranged connecting blocks 42 are fixed on the inner wall of shell 2 41. Shell 3 43 is fixed between the two connecting blocks 42. Shell 3 43 is located inside shell 2 41, and there is a certain space between them. One side of shell 2 41 is connected to a cold medium inlet 44, and the other side is connected to a cold medium outlet 45. The top of shell 3 43 is connected to pipe port 6 46 and pipe port 7 47, and the bottom is connected to a liquid outlet 48. The cold medium inlet 44 and cold medium outlet 45 are only connected to shell 2 41 and do not contact shell 3 43. Pipe port 6 46, pipe port 7 47 and liquid outlet 48 penetrate shell 2 41 and are only connected to shell 3 43. Pipe port 6 46 is connected to the flange at the end of pipe 8 away from pipe port 33.

[0032] The filtered air enters the separator 3 through port 32 and then enters the central space through slot 37. In the central space, carbon dioxide enters the separation pipe 38 and finally enters the liquefaction tank 4 through port 43, pipe 38, and port 66. An external gas tank is used to pressurize the liquefaction tank 4 through port 747. An external cold source is used to inject cold medium into the space between shell 241 and shell 343 through cold medium inlet 44, so that the temperature of the liquefaction tank 4 drops below the critical temperature of carbon dioxide (about 31 degrees), thereby liquefying the carbon dioxide.

[0033] The dry ice making machine 5 has an inlet 51 connected to the side near the liquefaction tank 4, and a pipe 52 connected to the top. A pipe 9 is provided between the liquefaction tank 4 and the dry ice making machine 5. One end of the pipe 9 is connected to the outlet and the other end is connected to the inlet 51. A valve 91 is installed on the pipe 9. The dry ice making machine 5 is existing technology and will not be described in detail here.

[0034] The tee pipe 7 is T-shaped, and its bottom port is connected to the port 8 flange 52 of the dry ice making machine 5. The other two ports of the tee pipe 7 are connected to pipe 1 71 by flange on one port and pipe 2 73 by flange on the other port. The end of pipe 1 71 away from the tee pipe 7 is connected to port 4 flange 33. A valve 1 72 is installed on pipe 1 71.

[0035] Carbon dioxide in liquefaction tank 4 is injected into dry ice making machine 5 through pipe 3 8 and inlet 51. Valve 1 72 is opened, and the waste gas generated during the operation of dry ice making machine 5 enters separator 3 through pipe 1 71. After repeated cycles, valve 1 72 is closed, valve 2 74 is opened, and the waste gas is injected into dissolving tank 6 through pipe 2 73 and inlet 9 61. Since dry ice making machine 5 cannot completely convert carbon dioxide into dry ice, the gas generated during the dry ice making process contains a large amount of carbon dioxide, which is a pity to directly discharge. In order to increase the utilization rate of carbon dioxide, the gas generated during the dry ice making process is injected into separator 3 to separate the gas again, thereby improving the final utilization rate of carbon dioxide.

[0036] The dissolving tank 6 is fixedly connected to a pipe port 61 on the side near the dry ice making machine 5, and a connecting pipe 62 is fixedly connected to the top side away from the dry ice making machine 5. The end of the pipe 73 away from the tee pipe 7 is connected to the flange of the pipe port 61. A valve 74 is installed on the pipe 73. The dissolving tank 6 contains a dissolving liquid that can dissolve carbon dioxide. The dissolving liquid can be a calcium hydroxide solution or a calcium oxide solution.

[0037] Operating mode: Cyclone separator 1 is started to separate and purify the waste gas. The purified waste gas escapes from outlet 12, enters filter box 2 through pipe 1 21, is filtered by filter cotton 23, and then escapes from pipe 22 through pipe 2. It enters separator 3 through pipe 32 through pipeline. Carbon dioxide enters separation pipe 38. Valve 3 81 is opened, and carbon dioxide enters dry ice making machine 5 through pipe 3 8 and liquid inlet 51. Valve 1 72 is opened, and the waste gas generated during the operation of dry ice making machine 5 enters separator 3 through pipe 1 71. After multiple cycles, valve 1 72 is closed, valve 2 74 is opened, and the waste gas is injected into dissolving tank 6 through pipe 2 73 and pipe 9 61 to absorb carbon dioxide in the waste gas. Finally, it is discharged to the outside through connecting pipe 62.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the content of the claims of the present utility model shall fall within the technical scope of the present utility model.

Claims

1. A carbon dioxide recovery apparatus comprising a cyclone separator (1), characterised in that: The cyclone separator (1) is communicated with a filter box (2), one side of the filter box (2) away from the cyclone separator (1) is communicated with a separator (3), one side of the separator (3) away from the filter box (2) is communicated with a liquefied tank (4), one side of the liquefied tank (4) away from the separator (3) is communicated with a dry ice making machine (5), one side of the dry ice making machine (5) away from the liquefied tank (4) is communicated with a dissolving tank (6), the top of the dry ice making machine (5) is communicated with a tee pipe (7), one pipe opening of the tee pipe (7) is communicated with the separator (3), the second pipe opening is communicated with the dry ice making machine (5), and the third pipe opening is communicated with the dissolving tank (6).

2. The carbon dioxide recovery apparatus according to claim 1, characterized by: One side of the cyclone separator (1) is fixedly communicated with an air inlet (11), and the top is fixedly communicated with an air outlet (12).

3. The carbon dioxide recovery apparatus according to claim 2, wherein: The filter box (2) is hollow, the bottom is fixedly communicated with a pipe opening one (21), and the top is fixedly communicated with a pipe opening two (22); at least one piece of filter cotton (23) is fixed in the filter box (2); the pipe opening one (21) is communicated with the air outlet (12) through a pipeline; and the filter cotton (23) is dry high-density sponge.

4. The carbon dioxide recovery apparatus according to claim 3, wherein: The separator (3) comprises a shell one (31), one end of the shell one (31) is fixedly communicated with a pipe opening three (32), the other end is fixedly communicated with a pipe opening four (33), and the top is communicated with a pipe opening five (34); the pipe opening three (32) is communicated with the pipe opening two (22) through a pipeline; the shell one (31) is fixedly communicated with a baffle one (35) and a baffle two (36); the baffle two (36) is arranged on the right side of the baffle one (35); a plurality of slot holes (37) are formed in the baffle one (35) and penetrate the baffle one (35); a plurality of separation pipes (38) are arranged in the shell one (31); the left end of the separation pipe (38) is fixedly connected with the baffle one (35), the right end is located on the right side of the baffle two (36), and the outer periphery of the separation pipe (38) is fixedly connected with the baffle two (36); the separation pipe (38) is hollow, the left end is closed, and the right end is open.

5. A carbon dioxide recovery apparatus according to claim 4, wherein: The pipe opening four (33) is flange-connected with a pipeline three (8), the pipeline three (8) is provided with a valve three (81), and one end of the pipeline three (8) away from the pipe opening four (33) is flange-connected with the liquefied tank (4).

6. A carbon dioxide recovery apparatus according to claim 5, wherein: The liquefaction tank (4) comprises a shell two (41), two opposite connecting blocks (42) are fixed on the inner wall of the shell two (41), a shell three (43) is fixed between the two connecting blocks (42), the shell three (43) is arranged inside the shell two (41), and a certain space exists between the shell two (41) and the shell three (43). One side of the shell two (41) is communicated with a cold medium inlet (44), and the other side is communicated with a cold medium outlet (45). The top of the shell three (43) is communicated with a pipe six (46) and a pipe seven (47), and the bottom is communicated with a liquid outlet (48). The cold medium inlet (44) and the cold medium outlet (45) are only communicated with the shell two (41) and are not in contact with the shell three (43). The pipe six (46), the pipe seven (47) and the liquid outlet (48) penetrate the shell two (41) and are only communicated with the shell three (43). The pipe six (46) is flange connected with one end of the pipe three (8) away from the pipe four (33).

7. A carbon dioxide recovery apparatus according to claim 6, wherein: The dry ice machine (5) is fixedly communicated with a liquid inlet (51) on one side close to the liquefaction tank (4) and a pipe eight (52) at the top. The liquefaction tank (4) and the dry ice machine (5) are provided with a pipe four (9). One end of the pipe four (9) is communicated with the liquid outlet (48), and the other end is communicated with the liquid inlet (51). The pipe four (9) is provided with a valve four (91).

8. The carbon dioxide recovery apparatus of claim 6, wherein: The three-way pipe (7) is in the shape of "T". The bottom pipe of the three-way pipe (7) is flange connected with the pipe eight (52) of the dry ice machine (5). The remaining two pipes of the three-way pipe (7) are flange connected with a pipe one (71) and a pipe two (73) respectively. One end of the pipe one (71) away from the three-way pipe (7) is flange connected with the pipe four (33). The pipe one (71) is provided with a valve one (72).

9. The carbon dioxide recovery apparatus of claim 8, wherein: The dissolving tank (6) is fixedly communicated with a pipe nine (61) on one side close to the dry ice machine (5) and a connecting pipe (62) on the top away from the dry ice machine (5). One end of the pipe two (73) away from the three-way pipe (7) is flange connected with the pipe nine (61). The pipe two (73) is provided with a valve two (74). The dissolving tank (6) is provided with a dissolving liquid capable of dissolving carbon dioxide.

Images