CN220418159U - Cold volume recovery unit of dry ice production tail gas - Google Patents
Cold volume recovery unit of dry ice production tail gas Download PDFInfo
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- CN220418159U CN220418159U CN202321978365.2U CN202321978365U CN220418159U CN 220418159 U CN220418159 U CN 220418159U CN 202321978365 U CN202321978365 U CN 202321978365U CN 220418159 U CN220418159 U CN 220418159U
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- heat exchange
- dry ice
- exchange box
- ice production
- pipe
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 235000011089 carbon dioxide Nutrition 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 59
- 238000011084 recovery Methods 0.000 title claims abstract description 35
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 15
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 23
- 239000002912 waste gas Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The utility model relates to a cold energy recovery device for dry ice production tail gas, which comprises dry ice production equipment, wherein an exhaust pipe is arranged on the dry ice production equipment, a heat exchange box is arranged at the output end of the exhaust pipe, a plurality of groups of serpentine coils are arranged in the heat exchange box in a connecting way, a plurality of upper guide plates are arranged at the top end in the heat exchange box in a matched way, a plurality of lower guide plates are arranged at intervals between the upper guide plates and the upper guide plates in a matched way, a guide cavity is formed between the upper guide plates and the lower guide plates in a matched way, an exhaust pipe is arranged on the heat exchange box, a carbon dioxide recovery tank is connected at the tail end of the exhaust pipe, and a heat preservation structure is arranged at the outer side of the heat exchange box.
Description
Technical Field
The utility model relates to the technical field of recovery of tail gas in dry ice production, in particular to a cold energy recovery device for the tail gas in dry ice production.
Background
In the production process of dry ice, the liquid carbon dioxide is subjected to heat exchange by decompression expansion, one part of the liquid carbon dioxide absorbs heat and gasifies, the other part of the liquid carbon dioxide releases heat to become dry ice, the temperature of gasified carbon dioxide is still very low, and if the gasified carbon dioxide is directly discharged to the atmosphere at an angle of less than 0 ℃, a large amount of cold energy is wasted, so that the cold energy in tail gas generated in the dry ice production process needs to be recycled;
the Chinese patent document with the publication number of CN208887414U provides a cold energy recovery device of dry ice production tail gas, wherein a circulating water tank is arranged at the output end of the dry ice production device through a first stainless steel pipeline, a coil pipe is connected to the interior of the circulating water tank, and the tail gas generated in the dry ice production process is conveyed in the circulating water tank through the coil pipe, so that cooling of the tail gas in the dry ice production process and heat exchange between heat exchange media in the circulating water tank are realized through the coil pipe, and the cold energy in the tail gas is recycled in the dry ice production process;
however, in the scheme, a single coil is adopted to realize heat exchange, and although the heat exchange between the dry ice production and the heat exchange medium in the circulating water tank can be realized, the heat exchange contact area is small, the contact time is short, the heat exchange sufficiency is poor, and the recovery efficiency of the cold energy in the tail gas of the dry ice production is poor;
meanwhile, the heat exchange medium in the circulating water tank cannot be turned over in the scheme, so that the contact sufficiency between the heat exchange medium and the coil is poor, the uniformity is poor, the heat exchange uniformity between the heat exchange medium and the coil is affected, and the recycling rate of cooling of dry ice production waste gas in the coil is affected.
Disclosure of Invention
The utility model aims to provide a cold energy recovery device for dry ice production tail gas, which aims to solve the problem that the cold energy recovery efficiency in the dry ice production tail gas in the prior art proposed in the background art is poor.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a cold energy recovery unit of dry ice production tail gas, includes dry ice production facility, have the blast pipe on the dry ice production facility, the output of blast pipe is provided with the heat exchange box, the heat exchange box internal connection blast pipe is provided with multiunit snakelike coil pipe, the inside top cooperation snakelike coil pipe of heat exchange box is provided with a plurality of guide plates, the inside bottom cooperation snakelike coil pipe of heat exchange box and with go up the interval between the guide plate and be provided with a plurality of guide plates down, go up the guide plate and be formed with the water conservancy diversion chamber with the cooperation snakelike coil pipe down between the guide plate, be provided with the discharge pipe on the heat exchange box, the tail end connection of discharge pipe has the carbon dioxide recovery jar, the outside of heat exchange box is provided with insulation construction.
As a further scheme of the utility model: the heat insulation structure comprises a heat insulation cotton layer arranged on the outer side of the heat exchange box, a heat insulation board layer is arranged on the outer side of the heat insulation cotton layer, a protective shell is arranged on the outer side of the heat insulation board layer, the heat insulation effect of the heat exchange box is enhanced, and the loss of free cold energy is avoided.
As still further aspects of the utility model: the heat exchange box is provided with a liquid inlet pipe and a liquid outlet pipe in cooperation with the flow guide cavity, the flow direction of the heat exchange medium in the flow guide cavity is opposite to the flow direction of the carbon dioxide gas in the serpentine coil, the contact between the heat exchange medium and the serpentine coil is prolonged, meanwhile, the full heat exchange between the heat exchange medium and the dry ice production tail gas is realized, and the recycling efficiency of the cold quantity in the dry ice production tail gas is improved.
As still further aspects of the utility model: the heat exchange box is internally matched with the upper guide plate, the lower guide plate and the serpentine coil to be provided with a rotating shaft, stirring blades are arranged on the rotating shaft, driving mechanisms are arranged on the outer side of the heat exchange box and matched with the stirring blades, and stirring of heat exchange medium in the heat exchange box can be achieved through matching of the rotating shaft and the stirring blades, so that contact between the heat exchange medium and the serpentine coil is more uniform, and heat exchange efficiency is improved.
As still further aspects of the utility model: the driving mechanism comprises a motor, a synchronous belt component is arranged between adjacent rotating shafts, and the rotating shafts are driven by the cooperation of the motor and the synchronous belt component.
As still further aspects of the utility model: and a plurality of heat exchange fins are arranged on each serpentine coil, so that the heat exchange area between the heat exchange medium and dry ice production waste gas in the serpentine coils is increased.
As still further aspects of the utility model: the exhaust pipe and the exhaust pipe are respectively connected to two ends of the serpentine coils, and the diversion pipe is arranged on the exhaust pipe, so that dry ice production waste gas can be uniformly distributed in each serpentine coil and can be fully subjected to heat exchange with a heat exchange medium.
Compared with the prior art, the utility model has the advantages that:
1. the dry ice production equipment comprises dry ice production equipment, wherein the dry ice production equipment is connected with a heat exchange box through an exhaust pipe, the exhaust pipe is connected in the heat exchange box, a plurality of serpentine coils are arranged, the serpentine coils are connected with the exhaust pipe through split pipes, and meanwhile, heat exchange fins are arranged on each serpentine coil, so that the heat exchange area between a heat exchange medium in the heat exchange box and the serpentine coils can be enhanced through the arrangement of the plurality of serpentine coils and the heat exchange fins, and the recovery effect and efficiency of cold energy in the exhaust gas emission process generated in the dry ice production process are improved.
2. The heat exchange box is internally provided with the upper guide plate and the lower guide plate in a matching manner, a guide cavity is formed between the upper guide plate and the lower guide plate, and the liquid inlet pipe and the liquid outlet pipe are arranged in a matching manner, wherein the flow direction of the heat exchange medium in the guide cavity is opposite to the flow direction of the carbon dioxide gas in the serpentine coil, so that the contact time between the heat exchange medium and the serpentine coil is prolonged, meanwhile, the heat exchange between the heat exchange medium and dry ice production waste gas can be fully realized, and the recovery efficiency of the cold quantity in the dry ice production waste gas is improved.
3. The utility model is provided with the rotating shafts matched with the upper guide plate, the lower guide plate and the serpentine coil, the rotating shafts are provided with the stirring blades, the driving mechanism is arranged on the outer sides of the heat exchange boxes and matched with the stirring blades, the driving mechanism comprises a motor, a synchronous belt component is arranged between the adjacent rotating shafts, the rotating shafts can be driven to rotate through the matching of the motor and the synchronous belt component, and the stirring blades can be driven to rotate through the rotating shafts, so that stirring of a heat exchange medium in a guide cavity is realized, and the heat exchange medium is in more sufficient contact with the serpentine coil, thereby improving the recovery efficiency of cold in the dry ice production waste gas emission process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a cold recovery device for dry ice production tail gas;
FIG. 2 is a cross-sectional view showing the internal structure of the heat exchange tank according to the present utility model;
FIG. 3 is a schematic view of the positional relationship among the upper baffle, lower baffle, serpentine coil, shaft, and stirring vane of the present utility model;
FIG. 4 is a schematic view of the positional relationship between the upper and lower baffles and the serpentine coil in the present utility model;
fig. 5 is a schematic view of a local connection structure among a heat exchange box, a heat insulation cotton layer, a heat insulation board layer and a protective shell in the utility model.
In the figure: 1. a dry ice production facility; 2. an exhaust pipe; 3. a heat exchange box; 4. a serpentine coil; 5. an upper deflector; 6. a lower deflector; 7. a diversion cavity; 8. a discharge pipe; 9. a carbon dioxide recovery tank; 10. a heat preservation cotton layer; 11. a heat preservation plate layer; 12. a protective housing; 13. a liquid inlet pipe; 14. a liquid outlet pipe; 15. a rotating shaft; 16. stirring blades; 17. a motor; 18. a timing belt assembly; 19. heat exchanging fins; 20. a shunt tube.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1 to 5, in an embodiment of the present utility model:
the utility model provides a cold volume recovery unit of dry ice production tail gas, including dry ice production facility 1, have blast pipe 2 on the dry ice production facility 1, the output of blast pipe 2 is provided with heat exchange box 3, heat exchange box 3 in-connection blast pipe 2 is provided with multiunit snakelike coil pipe 4, the inside top cooperation snakelike coil pipe 4 of heat exchange box 3 is provided with a plurality of guide plates 5, the inside bottom cooperation snakelike coil pipe 4 of heat exchange box 3 and with go up the interval between the guide plates 5 be provided with a plurality of guide plates 6 down, go up guide plate 5 and be formed with water conservancy diversion chamber 7 down between the guide plate 6 cooperation snakelike coil pipe 4, be provided with discharge pipe 8 on the heat exchange box 3, the tail end connection of discharge pipe 8 has carbon dioxide recovery jar 9, the outside of heat exchange box 3 is provided with insulation construction.
In the embodiment of the utility model, the following steps are included: the insulation structure is including setting up the cotton layer 10 of heat preservation in the heat exchange box 3 outside, and the outside of cotton layer 10 of heat preservation is provided with insulation board layer 11, and insulation board layer 11's outside is provided with protective housing 12, can improve the whole heat preservation effect of heat exchange box 3 through the cooperation of cotton layer 10 of heat preservation and insulation board layer 11, avoids the cold volume to outwards scatter and disappear through the lateral wall of heat exchange box 3 in the heat transfer process, improves the recovery effect of cold volume.
In the embodiment of the utility model, the following steps are included: the heat exchange box 3 is provided with a liquid inlet pipe 13 and a liquid outlet pipe 14 in cooperation with the diversion cavity 7, and the flow direction of a heat exchange medium in the diversion cavity 7 is opposite to the flow direction of carbon dioxide gas in the serpentine coil 4;
in this way, the heat exchange medium with higher temperature is firstly contacted with the serpentine coil 4 at the tail part and flows along the direction opposite to the flow direction of the dry ice production waste gas in the diversion cavity 7 in cooperation with the path of the serpentine coil 4, so that gradual refrigeration and heat exchange can be performed on the heat exchange medium, the contact time between the heat exchange medium and the serpentine coil 4 is prolonged, meanwhile, the waste gas with relatively higher tail temperature can refrigerate the heat exchange medium with higher temperature just entering, and the waste gas with lower temperature at the front end can further refrigerate the heat exchange medium after certain heat exchange, so that the heat exchange between the heat exchange medium and the dry ice production waste gas can be fully realized, and the recovery efficiency of the cold quantity in the dry ice production waste gas is improved.
In the embodiment of the utility model, the following steps are included: the heat exchange box 3 is internally matched with the upper guide plate 5, the lower guide plate 6 and the serpentine coil 4 to be provided with a rotating shaft 15, stirring blades 16 are arranged on the rotating shaft 15, the outer side of the heat exchange box 3 is matched with the stirring blades 16 to be provided with a driving mechanism, the driving mechanism comprises a motor 17, a synchronous belt assembly 18 is arranged between the adjacent rotating shafts 15, the rotating shafts 15 can be driven to rotate through the matching of the motor 17 and the synchronous belt assembly 18, the stirring blades 16 can be driven to rotate through the rotating shafts 15, and further stirring of a heat exchange medium in the guide cavity 7 is achieved, so that the heat exchange medium is in full contact with the serpentine coil 4, and the recovery efficiency of cold in the dry ice production waste gas emission process is improved.
In the embodiment of the utility model, the following steps are included: the heat exchange fins 19 are arranged on each serpentine coil 4, the heat exchange area between the serpentine coils 4 and the heat exchange medium in the diversion cavity 7 can be further enhanced through the arrangement of the heat exchange fins 19, and the heat exchange effect is improved, so that the cold recovery efficiency of dry ice production waste gas is improved.
In the embodiment of the utility model, the following steps are included: the exhaust pipe 2 and the discharge pipe 8 are connected respectively to the both ends of snakelike coil pipe 4 and are provided with shunt tubes 20, through the better realization snakelike coil pipe 4 of setting up of shunt tubes 20 and the connection between blast pipe 2 and the discharge pipe 8 for dry ice production waste gas can be better evenly distributed to in the middle of each snakelike coil pipe 4, improves cold volume recovery efficiency.
Examples
Referring to fig. 1 to 5, the present utility model relates to a cold recovery apparatus for dry ice production tail gas, comprising a dry ice production device 1, which is connected with a heat exchange box 3 through an exhaust pipe 2, and is provided with a plurality of serpentine coils 4 connected with the exhaust pipe 2 in the heat exchange box 3, wherein the serpentine coils 4 are connected with the exhaust pipe 2 through a shunt pipe 20, and meanwhile, each serpentine coil 4 is provided with a heat exchange fin 19, so that the heat exchange area between a heat exchange medium in the heat exchange box 3 and the serpentine coils 4 can be enhanced through the arrangement of the plurality of serpentine coils 4 and the heat exchange fin 19, thereby improving the recovery effect and efficiency of cold in the exhaust gas emission process generated in the dry ice production process.
Examples
Referring to fig. 1 to 5, on the basis of embodiment 2, the utility model is provided with the upper deflector 5 and the lower deflector 6 in the heat exchange box 3 in cooperation with the serpentine coil 4, a diversion cavity 7 is formed between the upper deflector 5 and the lower deflector 6, and a liquid inlet pipe 13 and a liquid outlet pipe 14 are in cooperation with each other, wherein the flow direction of a heat exchange medium in the diversion cavity 7 is opposite to the flow direction of carbon dioxide gas in the serpentine coil 4, so that the temperature of dry ice production waste gas in the serpentine coil 4 is gradually increased, the temperature of the heat exchange medium in the diversion cavity 7 is gradually reduced, so that the heat exchange medium with higher temperature is firstly contacted with waste gas with higher temperature in the serpentine coil 4 at the tail part after entering the heat exchange box 3, the cooling capacity of the heat exchange medium is fully recovered, and the path of the serpentine coil 4 is matched in the diversion cavity 7 along the direction opposite to the flow direction of the dry ice production waste gas, the heat exchange medium can be gradually cooled, the contact time between the heat exchange medium and the serpentine coil 4 is prolonged, meanwhile, the temperature of the tail part is relatively higher, the heat exchange medium can be cooled with the heat exchange medium with the tail part is relatively high temperature, the heat exchange medium can be fully cooled, and the heat exchange medium can be cooled after the dry ice is further cooled, and the waste gas is fully cooled, and the heat exchange medium can be cooled, and the waste gas can be fully cooled, and the waste gas can pass the heat is cooled, and the waste gas is at the temperature is fully cooled.
Examples
Referring to fig. 1 to 5, on the basis of embodiment 3, the utility model is provided with a rotating shaft 15 in the heat exchange box 3, wherein the upper guide plate 5, the lower guide plate 6 and the serpentine coil 4 are matched, the rotating shaft 15 is provided with stirring blades 16, the outer side of the heat exchange box 3 is matched with the stirring blades 16 and is provided with a driving mechanism, the driving mechanism comprises a motor 17, a synchronous belt assembly 18 is arranged between the adjacent rotating shafts 15, the rotating shaft 15 can be driven to rotate by the matching of the motor 17 and the synchronous belt assembly 18, the stirring blades 16 can be driven to rotate by the rotating shaft 15, and further stirring of a heat exchange medium in the guide cavity 7 is realized, so that the heat exchange medium is in more sufficient contact with the serpentine coil 4, and the recovery efficiency of cold quantity in the dry ice production waste gas emission process is improved.
In all the above mentioned embodiments, the welding, the matching connection of the bolt and the nut, the bolt or the screw connection or other known connection modes can be selected according to the actual situation, and are not described in detail herein, the above description refers to the write-in fixed connection, and the welding is preferentially considered, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art should be covered by the protection scope of the present utility model if the technical scheme and the inventive concept thereof are equivalent or changed within the scope of the present utility model.
Claims (7)
1. The utility model provides a cold volume recovery unit of dry ice production tail gas, includes dry ice production facility (1), have blast pipe (2) on dry ice production facility (1), the output of blast pipe (2) is provided with heat exchange box (3), its characterized in that: the utility model discloses a heat exchange box, including heat exchange box (3), inside blast pipe (2) is provided with multiunit snakelike coil pipe (4), inside top cooperation snakelike coil pipe (4) of heat exchange box (3) are provided with guide plate (5) on a plurality of, the interval is provided with a plurality of guide plates (6) down between inside bottom cooperation snakelike coil pipe (4) of heat exchange box (3) and on guide plate (5), cooperation snakelike coil pipe (4) are formed with water conservancy diversion chamber (7) between last guide plate (5) and lower guide plate (6), be provided with discharge pipe (8) on heat exchange box (3), the trailing end connection of discharge pipe (8) has carbon dioxide recovery tank (9), the outside of heat exchange box (3) is provided with insulation construction.
2. The cold energy recovery device for dry ice production tail gas according to claim 1, wherein: the heat insulation structure comprises a heat insulation cotton layer (10) arranged on the outer side of a heat exchange box (3), a heat insulation board layer (11) is arranged on the outer side of the heat insulation cotton layer (10), and a protective shell (12) is arranged on the outer side of the heat insulation board layer (11).
3. The cold energy recovery device for dry ice production tail gas according to claim 1, wherein: the heat exchange box (3) is provided with a liquid inlet pipe (13) and a liquid outlet pipe (14) in cooperation with the diversion cavity (7), and the flow direction of a heat exchange medium in the diversion cavity (7) is opposite to the flow direction of carbon dioxide gas in the serpentine coil (4).
4. A cold recovery device for dry ice production tail gas according to claim 3, wherein: the heat exchange box is characterized in that a rotating shaft (15) is arranged in the heat exchange box (3) in a matched mode, the upper guide plate (5), the lower guide plate (6) and the serpentine coil pipe (4), stirring blades (16) are arranged on the rotating shaft (15), and a driving mechanism is arranged on the outer side of the heat exchange box (3) in a matched mode, and the stirring blades (16) are arranged on the outer side of the heat exchange box.
5. A cold energy recovery device for dry ice production tail gas as claimed in claim 4, wherein: the driving mechanism comprises a motor (17), and a synchronous belt assembly (18) is arranged between the adjacent rotating shafts (15).
6. The cold energy recovery device for dry ice production tail gas according to claim 1, wherein: and a plurality of heat exchange fins (19) are arranged on each serpentine coil (4).
7. The cold energy recovery device for dry ice production tail gas according to claim 1, wherein: the two ends of the serpentine coil pipe (4) are respectively connected with the exhaust pipe (2) and the exhaust pipe (8) and are provided with a shunt pipe (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978365.2U CN220418159U (en) | 2023-07-26 | 2023-07-26 | Cold volume recovery unit of dry ice production tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978365.2U CN220418159U (en) | 2023-07-26 | 2023-07-26 | Cold volume recovery unit of dry ice production tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418159U true CN220418159U (en) | 2024-01-30 |
Family
ID=89651980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321978365.2U Active CN220418159U (en) | 2023-07-26 | 2023-07-26 | Cold volume recovery unit of dry ice production tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418159U (en) |
-
2023
- 2023-07-26 CN CN202321978365.2U patent/CN220418159U/en active Active
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