CN210595286U - Tail gas recovery device of dry ice production system - Google Patents
Tail gas recovery device of dry ice production system Download PDFInfo
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- CN210595286U CN210595286U CN201921676015.4U CN201921676015U CN210595286U CN 210595286 U CN210595286 U CN 210595286U CN 201921676015 U CN201921676015 U CN 201921676015U CN 210595286 U CN210595286 U CN 210595286U
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Abstract
The utility model relates to a tail gas recovery unit of dry ice production system, including locating dry ice maker be used for carminative blast pipe, with the blast pipe link to each other be used for conveying gaseous gas-supply pipe, with the gas-supply pipe passes through the gaseous carbon dioxide storage device that the blast pipe links to each other and with gaseous carbon dioxide storage device passes through the liquid carbon dioxide apparatus for producing that raw materials pipeline links to each other. The utility model discloses a gaseous carbon dioxide to dry ice production system production retrieves and recycles to improve the utilization ratio of carbon dioxide raw materials, reduce the waste of carbon dioxide raw materials.
Description
Technical Field
The utility model belongs to the technical field of dry ice production auxiliary device's technique and specifically relates to a tail gas recovery unit of dry ice production system is related to.
Background
Dry ice is solid carbon dioxide and the conventional dry ice production process is typically: gaseous carbon dioxide is conveyed to a liquid carbon dioxide production device through a raw material gas pipeline, the gaseous carbon dioxide is subjected to heat exchange, compression, hydrocarbon removal, purification, liquefaction, purification and other processes of the liquid carbon dioxide production device, then the liquid carbon dioxide is conveyed to a dry ice machine for manufacturing from a storage tank, in the process of producing dry ice by the dry ice machine, one part of liquid carbon dioxide is gasified and becomes tail gas to be discharged, and the other part of liquid carbon dioxide is taken away heat by the gasified carbon dioxide to be rapidly cooled, so that the dry ice is formed.
At present, carbon dioxide gas generated by a dry ice production system is generally directly discharged in a tail gas mode, and waste of carbon dioxide raw materials is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tail gas recovery device of dry ice production system retrieves through the gaseous carbon dioxide who produces the dry ice production system and recycles to improve the utilization ratio of carbon dioxide raw materials, reduce the waste of carbon dioxide raw materials.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a tail gas recovery device of a dry ice production system comprises an exhaust pipe arranged on a dry ice machine and used for exhausting, a gas pipe connected with the exhaust pipe and used for conveying gas, a gas carbon dioxide storage device connected with the gas pipe through a gas pipe, and a liquid carbon dioxide production device connected with the gas carbon dioxide storage device through a raw material pipeline.
By adopting the technical scheme, the gaseous carbon dioxide generated by the dry ice production system enters the gas pipe through the exhaust pipe and is conveyed to the gaseous carbon dioxide storage device through the gas conveying pipe on the gas pipe, then the gaseous carbon dioxide in the gaseous carbon dioxide storage device is conveyed to the liquid carbon dioxide production device through the raw material pipeline, the liquid carbon dioxide production device carries out the processes of heat exchange, compression, dealkylation, purification, liquefaction, purification and the like on the gaseous carbon dioxide, and finally the liquid carbon dioxide is conveyed to the dry ice machine from the storage tank to manufacture the dry ice; can retrieve the gaseous carbon dioxide who produces in the dry ice production system through this scheme and recycle to improve the utilization ratio of carbon dioxide raw materials, reduce the waste of carbon dioxide raw materials.
The utility model discloses further set up to: still include with the blast pipe links to each other and is used for the first waste gas pipe of exhaust gas, first waste gas pipe with the gas-supply pipe is located the blast pipe is kept away from the one end of dry ice machine, the blast pipe first waste gas pipe and the junction of gas-supply pipe is provided with and is used for making the blast pipe with first waste gas pipe communicates with each other or makes the blast pipe with the communicating three-way ball valve of gas-supply pipe.
Through adopting above-mentioned technical scheme, the initial stage of production dry ice adjusts the tee bend ball valve and makes blast pipe and first exhaust pipe communicate with each other to discharge the gaseous carbon dioxide and the moisture that impurity is more from first exhaust pipe, make ice-making chamber and the blast pipe of dry ice machine be in dry state, be favorable to guaranteeing gaseous carbon dioxide's purity, improve liquid carbon dioxide apparatus for producing and to liquid carbon dioxide's purification efficiency.
The utility model discloses further set up to: the gas transmission pipe is provided with a plurality of second waste gas pipes along the length direction, the second waste gas pipes are provided with first valves for controlling the second waste gas pipes to be isolated or communicated with the outside, and the gas transmission pipe is provided with second valves for controlling the gas transmission pipe to be isolated or communicated with the gas carbon dioxide storage device.
Through adopting above-mentioned technical scheme, before retrieving the gaseous carbon dioxide that produces in the dry ice production process, control first valve, make second waste gas pipe and external world be linked together, and close the second valve, make the air supply pipe isolated mutually with gaseous carbon dioxide device, then adjust the tee bend ball valve, make gaseous carbon dioxide take away from second waste gas pipe with the interior impurity gas of air supply pipe and moisture etc. be favorable to guaranteeing the purity degree of follow-up gaseous carbon dioxide transportation in-process, thereby further improve liquid carbon dioxide apparatus for producing the purification efficiency of liquid carbon dioxide.
The utility model discloses further set up to: the exhaust pipe, the gas pipe and the periphery of the gas supply pipe are all provided with heat preservation layers.
By adopting the technical scheme, because the temperature of the carbon dioxide gas generated in the production process of the dry ice is lower, the heat preservation layers are arranged on the peripheral sides of the exhaust pipe, the gas pipe and the gas supply pipe, and the prevention or reduction of the condensation of the moisture in the air on the outer side wall of the exhaust pipe, the gas pipe or the gas supply pipe is facilitated.
The utility model discloses further set up to: the gas-supply pipe is by indoor extension to outdoor, just the gas-supply pipe is close to outdoor wall body setting, the bottom of gas-supply pipe is provided with right the gas-supply pipe carries out the supporting component that supports.
By adopting the technical scheme, the gas transmission pipe extends from the indoor to the outdoor, which is beneficial to saving the indoor space; in addition, the bottom of the gas pipe is provided with a supporting component for supporting the gas pipe, so that the gas pipe is favorably supported, and the vibration amplitude of the gas pipe due to uneven pressure is reduced.
The utility model discloses further set up to: the supporting component comprises a supporting plate and an arc cushion piece, one end of the supporting plate is fixed on the wall body and located below the gas conveying pipe, the arc cushion piece is arranged on the supporting plate and used for supporting the gas conveying pipe, and the arc cushion piece is supported below the gas conveying pipe.
Through adopting above-mentioned technical scheme, the supporting component includes the backup pad, is provided with the arc pad spare in the backup pad, and the arc pad spare supports in the below of gas-supply pipe to support the gas-supply pipe.
The utility model discloses further set up to: the inner peripheral side of the arc-shaped pad piece is provided with a cushion layer, and the cushion layer is abutted against one side, facing the arc-shaped pad piece, of the gas conveying pipe.
Through adopting above-mentioned technical scheme, the interior periphery side of arc backing member sets up the cushion layer, is favorable to preventing that arc backing member causes wearing and tearing to gas-supply pipe or the cladding at the heat preservation of gas-supply pipe periphery side.
To sum up, the utility model discloses a beneficial technological effect does:
1. the method comprises the following steps that gaseous carbon dioxide generated by a dry ice production system enters a gas pipe through a gas exhaust pipe and is conveyed to a gaseous carbon dioxide storage device through a gas conveying pipe on the gas pipe, then the gaseous carbon dioxide in the gaseous carbon dioxide storage device is conveyed to a liquid carbon dioxide production device through a raw material pipeline, the liquid carbon dioxide production device carries out heat exchange, compression, dealkylation, purification, liquefaction and purification on the gaseous carbon dioxide, and finally the liquid carbon dioxide is conveyed to a dry ice machine from a storage tank to manufacture dry ice; the carbon dioxide gas generated in the dry ice production system can be recycled by the scheme, so that the utilization rate of the carbon dioxide raw material is improved, and the waste of the carbon dioxide raw material is reduced;
2. in the initial stage of dry ice production, the three-way ball valve is adjusted to enable the exhaust pipe to be communicated with the first waste gas pipe, so that gaseous carbon dioxide with more impurities and moisture are discharged from the first waste gas pipe, the ice making chamber of the ice dryer and the exhaust pipe are in a dry state, the purity of the gaseous carbon dioxide is guaranteed, and the purification efficiency of the liquid carbon dioxide production device on the liquid carbon dioxide is improved;
3. before the gaseous carbon dioxide that produces in the recovery dry ice production process, control first valve, make second waste gas pipe and external world be linked together to close the second valve, make the blast pipe isolated mutually with gaseous carbon dioxide device, then adjust the tee bend ball valve, make gaseous carbon dioxide take away impurity gas and moisture etc. in with the blast pipe from second waste gas pipe, be favorable to guaranteeing the purity degree in the follow-up gaseous carbon dioxide transportation process, thereby further improve liquid carbon dioxide apparatus for producing and to the purification efficiency of liquid carbon dioxide.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a schematic overall structure diagram of the present embodiment;
fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.
In the figure, 1, a dry ice machine; 2. an exhaust pipe; 21. a three-way ball valve; 3. a first exhaust gas pipe; 4; a gas delivery pipe; 41. a second exhaust gas pipe; 411. a first valve; 5. an air supply pipe; 51. a second valve; 6. a gaseous carbon dioxide storage means; 7. a raw material pipeline; 8. a liquid carbon dioxide production unit; 9. a support assembly; 91. a support plate; 92. an arcuate pad; 921. a cushion layer; 10. a wall body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In this embodiment: referring to fig. 1, for the utility model discloses a tail gas recovery device of dry ice production system, include blast pipe 2, gas-supply pipe 4, gaseous carbon dioxide storage device 6 and the liquid carbon dioxide apparatus for producing 8 that set gradually along gaseous carbon dioxide's direction of transmission. One end of the exhaust pipe 2 is communicated with the ice making chamber of the dry ice machine 1, and the other end of the exhaust pipe is connected with the gas transmission pipe 4, so that carbon dioxide gas generated during the production of dry ice can enter the gas transmission pipe 4 through the exhaust pipe 2; in addition, the gas transmission pipe 4 is provided with a gas transmission pipe 5 connected with a gas carbon dioxide storage device 6, and the gas transmission pipe 5 is used for transmitting the gas carbon dioxide in the gas transmission pipe 4 into the gas carbon dioxide storage device 6; a raw material pipeline 7 is connected between the gas carbon dioxide storage device 6 and the liquid carbon dioxide production device 8, the raw material pipeline 7 is used for conveying the gas carbon dioxide in the gas carbon dioxide storage device 6 into the liquid carbon dioxide production device 8, and the liquid carbon dioxide production device 8 carries out heat exchange, compression, dealkylation, purification, liquefaction, purification and other processes on the gas carbon dioxide.
In order to improve the purification efficiency of the liquid carbon dioxide production device 8 on the liquid carbon dioxide, referring to fig. 1 and fig. 2, one end of the exhaust pipe 2, which is far away from the ice dryer 1, is connected with a first exhaust pipe 3, wherein a three-way ball valve 21 is arranged at the joint of the exhaust pipe 2, the first exhaust pipe 3 and the gas pipe 4, and the three-way ball valve 21 is used for controlling the communication between the exhaust pipe 2 and the first exhaust pipe 3 or controlling the communication between the exhaust pipe 2 and the gas pipe 4. In addition, referring to fig. 3, the gas pipe 4 is provided with a plurality of second exhaust pipes 41 along the length direction thereof, the second exhaust pipes 41 are provided with first valves 411 for controlling the second exhaust pipes 41 to be isolated from or communicated with the outside, and the gas pipe 5 is provided with second valves 51 for controlling the gas pipe 5 to be isolated from or communicated with the gaseous carbon dioxide device.
At the initial stage of dry ice production, adjust three-way ball valve 21 and make blast pipe 2 and first exhaust pipe 3 communicate with each other to discharge the gaseous carbon dioxide and the moisture that impurity is more from first exhaust pipe 3, make ice-making room and blast pipe 2 be in dry state, be favorable to guaranteeing the purity of gaseous carbon dioxide, improve liquid carbon dioxide apparatus for producing 8 purification efficiency to liquid carbon dioxide. After impurities in the ice making chamber and the exhaust pipe 2 are removed, the three-way ball valve 21 is adjusted to enable the exhaust pipe 2 to be communicated with the gas conveying pipe 4, the first valve 411 is adjusted to enable the second waste gas pipe 41 to be communicated with the outside, and meanwhile, the second valve 51 is adjusted to enable the gas conveying pipe 5 to be isolated from the gas carbon dioxide storage device 6, so that impurity gas or water in the gas conveying pipe 4 is discharged from the second waste gas pipe 41 through the gas carbon dioxide, and the purity of the subsequent gas carbon dioxide in the conveying process is improved.
In order to prevent or reduce the moisture in the air from condensing on the outer side wall of the exhaust pipe 2, the gas pipe 4 or the air supply pipe 5, in the embodiment, the outer peripheral sides of the exhaust pipe 2, the gas pipe 4 and the air supply pipe 5 are all coated with insulating layers (not marked in the drawing) because the temperature of the carbon dioxide gas generated in the dry ice production process is low. Wherein, the heat-insulating layer can be made of polyethylene heat-insulating material or rubber-plastic sponge and the like.
Referring to fig. 3, the air pipe 4 may be provided outdoors or indoors. In order to save space, in the embodiment, the ice dryer 1, the carbon dioxide gas storage device and the liquid carbon dioxide production device 8 are all arranged indoors, the gas pipe 4 extends from the indoor to the outdoor and is arranged close to the outdoor wall 10, and the gas pipe 5 penetrates through the wall 10 from the outdoor and is connected with the indoor gas carbon dioxide storage device 6.
Referring to fig. 4, the bottom of the gas pipe 4 is provided with a support assembly 9 that supports the gas pipe 4. The support assembly 9 comprises a support plate 91 with one end fixed on the wall 10 and an arc-shaped pad 92 welded and fixed on one side of the support plate 91 facing the gas pipe 4. Wherein, the backup pad 91 is located the below of gas-supply pipe 4 and backup pad 91 is provided with a plurality ofly along the length direction of gas-supply pipe 4, and arc backing member 92 is the semicircle arc setting, and the opening of arc backing member 92 is towards gas-supply pipe 4, and the week side of arc backing member 92 and one side looks butt of gas-supply pipe 4 towards arc backing member 92 are favorable to supporting gas-supply pipe 4 to reduce the range that gas-supply pipe 4 trembles because of pressure is inhomogeneous. In addition, in order to prevent the arc cushion 92 from wearing the air pipe 4 or the heat insulating layer coated on the outer periphery of the air pipe 4, in this embodiment, a cushion layer 921 made of sponge or rubber is disposed on the inner periphery of the arc cushion 92, and the cushion layer 921 abuts against the air pipe 4 or the heat insulating layer on the outer periphery of the air pipe 4.
The implementation principle of the embodiment is as follows: at the initial stage of dry ice production, adjusting the three-way ball valve 21 to enable the exhaust pipe 2 to be communicated with the first waste gas pipe 3, so that gaseous carbon dioxide and moisture with more impurities are discharged from the first waste gas pipe 3, and an ice making chamber of the dry ice machine 1 and the exhaust pipe 2 are in a dry state;
after impurities in the ice making chamber and the exhaust pipe 2 are removed, the three-way ball valve 21 is adjusted to enable the exhaust pipe 2 to be communicated with the gas conveying pipe 4, the first valve 411 is adjusted to enable the second waste gas pipe 41 to be communicated with the outside, and meanwhile, the second valve 51 is adjusted to enable the gas conveying pipe 5 to be isolated from the gas carbon dioxide storage device 6, so that impurity gas or water in the gas conveying pipe 4 is discharged from the second waste gas pipe 41 through the gas carbon dioxide, and the purity of the subsequent gas carbon dioxide in the conveying process is improved;
finally, closing the first valve 411 to isolate the second waste gas pipe 41 from the outside, adjusting the second valve 51 to communicate the gas feed pipe 5 with the gaseous carbon dioxide storage device 6, so that the gaseous carbon dioxide generated by the dry ice production system enters the gas feed pipe 4 through the exhaust pipe 2 and is conveyed to the gaseous carbon dioxide storage device 6 through the gas feed pipe 5 on the gas feed pipe 4, then the gaseous carbon dioxide in the gaseous carbon dioxide storage device 6 is conveyed to the liquid carbon dioxide production device 8 through the raw material pipeline 7, the liquid carbon dioxide production device 8 performs heat exchange, compression, dealkylation, purification, liquefaction and purification on the gaseous carbon dioxide, and finally the liquid carbon dioxide is conveyed from the storage tank to the dry ice machine 1 to manufacture the dry ice; can retrieve the gaseous carbon dioxide who produces in the dry ice production system through this scheme and recycle to improve the utilization ratio of carbon dioxide raw materials, reduce the waste of carbon dioxide raw materials.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a tail gas recovery unit of dry ice production system which characterized in that: the device comprises an exhaust pipe (2) arranged on an ice dryer (1) and used for exhausting, a gas transmission pipe (4) connected with the exhaust pipe (2) and used for transmitting gas, a gas carbon dioxide storage device (6) connected with the gas transmission pipe (4) through a gas transmission pipe (5), and a liquid carbon dioxide production device (8) connected with the gas carbon dioxide storage device (6) through a raw material pipeline.
2. A tail gas recovery device of a dry ice production system according to claim 1, wherein: still include with blast pipe (2) link to each other and are used for the first waste gas pipe (3) of exhaust gas, first waste gas pipe (3) with gas-supply pipe (4) are located blast pipe (2) are kept away from the one end of dry ice maker (1), blast pipe (2) first waste gas pipe (3) and the junction of gas-supply pipe (4) is provided with and is used for making blast pipe (2) with first waste gas pipe (3) communicate with each other or make blast pipe (2) with the communicating three-way ball valve (21) of gas-supply pipe (4).
3. A tail gas recovery device of a dry ice production system according to claim 2, characterized in that: gas-supply pipe (4) are provided with a plurality of second waste gas pipe (41) along its length direction, second waste gas pipe (41) are provided with the control second waste gas pipe (41) are separated from the external world and are isolated or communicating first valve (411), air feed pipe (5) are provided with the control air feed pipe (5) with gaseous carbon dioxide storage device (6) are isolated mutually or communicating second valve (51).
4. A tail gas recovery device of a dry ice production system according to claim 3, wherein: the exhaust pipe (2), the gas conveying pipe (4) and the gas conveying pipe (5) are all provided with heat preservation layers on the periphery sides.
5. A tail gas recovery device of a dry ice production system according to claim 1, wherein: the air delivery pipe (4) is by indoor extension to outdoor, just air delivery pipe (4) are close to outdoor wall body (10) and set up, the below of air delivery pipe (4) is provided with right support assembly (9) that air delivery pipe (4) supported.
6. A tail gas recovery device of a dry ice production system according to claim 5, wherein: the support assembly (9) comprises a support plate (91) and an arc-shaped cushion piece (92), wherein one end of the support plate is fixed on a wall body (10) and is located below the gas conveying pipe (4), the arc-shaped cushion piece (92) is arranged on the support plate (91) and is used for supporting the gas conveying pipe (4), and the arc-shaped cushion piece (92) is supported below the gas conveying pipe (4).
7. A tail gas recovery device of a dry ice production system according to claim 6, wherein: the inner periphery side of the arc-shaped cushion piece (92) is provided with a cushion layer (921), and the cushion layer (921) is abutted against one side of the arc-shaped cushion piece (92) facing the gas transmission pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921676015.4U CN210595286U (en) | 2019-09-30 | 2019-09-30 | Tail gas recovery device of dry ice production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921676015.4U CN210595286U (en) | 2019-09-30 | 2019-09-30 | Tail gas recovery device of dry ice production system |
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| CN210595286U true CN210595286U (en) | 2020-05-22 |
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| CN201921676015.4U Active CN210595286U (en) | 2019-09-30 | 2019-09-30 | Tail gas recovery device of dry ice production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956080A (en) * | 2022-02-10 | 2022-08-30 | 厦门金瑞镒工贸有限公司 | Dry ice preparation device, exhaust structure of dry ice preparation device and exhaust method |
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2019
- 2019-09-30 CN CN201921676015.4U patent/CN210595286U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956080A (en) * | 2022-02-10 | 2022-08-30 | 厦门金瑞镒工贸有限公司 | Dry ice preparation device, exhaust structure of dry ice preparation device and exhaust method |
| WO2023151461A1 (en) * | 2022-02-10 | 2023-08-17 | 厦门金瑞镒工贸有限公司 | Dry ice making device, and exhaust structure and exhaust method of dry ice making device |
| CN114956080B (en) * | 2022-02-10 | 2024-02-06 | 厦门金瑞镒工贸有限公司 | Dry ice preparation device, exhaust structure of dry ice preparation device and exhaust method |
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