CN109186178A - A kind of exhaust gas recovery system and method applied to dry ice production system - Google Patents
A kind of exhaust gas recovery system and method applied to dry ice production system Download PDFInfo
- Publication number
- CN109186178A CN109186178A CN201811062687.6A CN201811062687A CN109186178A CN 109186178 A CN109186178 A CN 109186178A CN 201811062687 A CN201811062687 A CN 201811062687A CN 109186178 A CN109186178 A CN 109186178A
- Authority
- CN
- China
- Prior art keywords
- dry ice
- production system
- tail gas
- carbon dioxide
- ice production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 235000011089 carbon dioxide Nutrition 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 229960004424 carbon dioxide Drugs 0.000 claims abstract description 46
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 30
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 30
- 238000004064 recycling Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000006200 vaporizer Substances 0.000 claims abstract description 15
- 238000002309 gasification Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 57
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000005431 greenhouse gas Substances 0.000 abstract description 2
- 238000000746 purification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
- C01B32/55—Solidifying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/80—Carbon dioxide
Abstract
The present invention discloses a kind of exhaust gas recovery system and method applied to dry ice production system, includes the following steps: step S1: the tail gas of dry-ice machine being introduced to vaporizer and is gasified；Step S2: the gaseous carbon dioxide after gasification is input to recycling general pipeline；Step S3: recycling general pipeline is pressurizeed by air blower gaseous carbon dioxide being input to circulating water pool, carries out cold recovery to gaseous carbon dioxide by circulating water pool；Step S4: the gaseous carbon dioxide after cold recovery is input to the feedstock input of gas storage device.Exhaust gas recovery system and method applied to dry ice production system of the invention, design is simple, realizes the recycling of tail gas, substantially increases the utilization rate to raw material, reduces the discharge of greenhouse gases, and realize cold recovery to tail gas, reduces energy consumption.
Description
Technical field
The present invention relates to dry ice production technical fields, and in particular, to a kind of tail gas applied to dry ice production system time
Receive system and method.
Background technique
Dry ice is widely applied in all kinds of occasions, is please referred to shown in Fig. 1, for dry ice production system in the prior art
Structural schematic diagram, traditional dry ice production method process flow, generally by gaseous carbon dioxide pass through unstripped gas pipeline
Then again will to liquid CO 2 process units by processes such as the cooling of device, compression, de- hydrocarbon, purification, liquefaction purifications
Liquid CO 2 is delivered to dry-ice machine from storage tank and is manufactured, and during dry-ice machine produces dry ice, a part is (about
60%) liquid CO 2 is gasified, and tail gas emptying is become, and the liquid CO 2 of another part (about 40%) is gasified
Carbon dioxide take away heat and cool down rapidly, to form bulk dry ice, above-mentioned dry ice in bulk is squeezed dry-ice machine high pressure grinding tool
Pressure forms molding dry ice.Traditional dry ice production method design is simple, still, high to the waste of raw material, high production cost,
Meanwhile the discharge of the carbon dioxide of gasification leads to cryogenic gas loss of refrigeration capacity and the pollution to environment.Therefore, we need one
Kind environmental protection, energy-efficient dry ice production system.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of exhaust gas recovery system applied to dry ice production system and side
Method.
According to the first aspect of the invention, the present invention provides a kind of exhaust gas recovery system applied to dry ice production system,
The dry ice production system includes: sequentially connected gas storage device, liquid CO 2 process units and dry-ice machine, tail gas
Recovery system includes: vaporizer, recycling general pipeline, air blower and follows bad pond；The input terminal of vaporizer and the tail gas of dry-ice machine
Output end connection；The output end of vaporizer is connect with the input terminal of recycling general pipeline；Recycle general pipeline output end and air blower it is defeated
Enter end connection；The output end of air blower and the input terminal of circulating water pool connect；The output end and gas storage device of circulating water pool
Connection.
According to an embodiment of the present invention, buffer air bag is provided between air blower and circulating water pool.
According to the second aspect of the invention, the present invention provides a kind of method for recovering tail gas applied to dry ice production system,
It is included the following steps: based on the exhaust gas recovery system for being applied to dry ice production system described in the first aspect of the present invention
Step S1: the tail gas of dry-ice machine is introduced to vaporizer and is gasified；
Step S2: the gaseous carbon dioxide after gasification is input to recycling general pipeline gasification；
Step S3: recycling general pipeline is pressurizeed by air blower gaseous carbon dioxide being input to circulating water pool, and recirculated water is passed through
Pond carries out cold recovery to gaseous carbon dioxide；And
Step S4: the gaseous carbon dioxide after cold recovery is input to the feedstock input of gas storage device.
According to an embodiment of the present invention, the gaseous carbon dioxide temperature after gasifying in step S1 is -3~-1 Celsius
Degree.
According to an embodiment of the present invention, the gaseous carbon dioxide temperature in step S4 Jing Guo cold recovery is 20~25
Degree Celsius.
According to an embodiment of the present invention, the moulding pressure of air blower is 0.4~0.6MPa.
According to an embodiment of the present invention, further include step S3.1 between step S3 and step S4: passing through buffer air bag
The air-flow of recycling general pipeline is buffered.
According to an embodiment of the present invention, the pressure in buffer air bag is 10~15KPa.
The beneficial effect that the present invention is different from the prior art is: the tail gas recycle applied to dry ice production system of the invention
System and method, design is simple, realizes the recycling of tail gas, substantially increases the utilization rate to raw material, reduce greenhouse
The discharge of gas, and cold recovery is realized to tail gas, reduce energy consumption.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of dry ice production system in the prior art；
Fig. 2 is the structural schematic diagram for being applied to the exhaust gas recovery system of dry ice production system in the application.
Specific embodiment
Multiple embodiments of the invention will be disclosed below, as clearly stated, details in many practices will with
Illustrate together in lower narration.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.That is,
In some embodiments of the invention, the details in these practices is non-essential.
It please refers to shown in Fig. 2, is the structural representation for being applied to the exhaust gas recovery system of dry ice production system in the application
Figure.
The present invention provides a kind of exhaust gas recovery system applied to dry ice production system, which includes successively
Gas storage device 10, liquid CO 2 process units 20 and the dry-ice machine 30 of connection, wherein unstrpped gas, that is, gaseous state two
Carbonoxide is inputted by the feedstock input of gas storage device 10, and gaseous carbon dioxide is input to liquid titanium dioxide by pipeline
Carbon process units 20, gaseous carbon dioxide is by the cooling of liquid CO 2 process units 20, compression, de- hydrocarbon, purification, liquefaction
Liquid CO 2 is made in the processes such as purification, and then liquid CO 2 is input to dry-ice machine 30, and liquid CO 2 passes through dry
Molding dry ice is made in ice maker 30, and tail gas is discharged by its tail gas output end.
Exhaust gas recovery system includes vaporizer 101, recycling general pipeline 102, air blower 103 and follows bad pond 104, vaporizer
101 input terminal is connect with the tail gas output end of dry-ice machine 30, the output end of vaporizer 101 and the input terminal of recycling general pipeline 102
The output end of connection, recycling general pipeline 102 is connect with the input terminal of air blower 103, the output end of air blower 103 and circulating water pool
Input terminal connection, the connection of the output end and gas storage device 10 of circulating water pool, wherein tail gas adds in exhaust gas recovery system
Work process please refers to the content that front is applied to the method for recovering tail gas of dry ice production system, is not repeating herein.
Please continue to refer to shown in Fig. 2, in a preferred embodiment, recycles and be provided with buffering between general pipeline 102 and air blower 103
Air bag 105, wherein the quantity of buffer air bag 105 is multiple, and the air-flow that recycling general pipeline 102 is exported needs first to fill buffer air bag 105
It is further continued for conveying towards 103 direction of air blower after full, so realizes and level-one or multistage are carried out to the air-flow that recycling general pipeline 102 is exported
Buffering, is additionally provided with switch valve 106 between each buffer air bag 105 and the connection of air blower 103, is controlled by switch valve 106
105 start and stop of buffer air bag, to realize the control to productive temp.
Please continue to refer to shown in Fig. 2, the present invention also provides a kind of method for recovering tail gas applied to dry ice production system, should
Method for recovering tail gas is mainly used for recycling the tail gas in dry ice production system, which is about -10~-8 degrees Celsius,
Main component includes a large amount of gaseous carbon dioxide and a small amount of drikold, and the method for recovering tail gas of the application is main
Tail gas is recycled, so that the tail gas is converted into the unstrpped gas that front end inputs in dry ice production system, realize energy-saving ring
It protects, reduces the purpose of production cost.Used equipment or device can be set from using routine on the market in this application
Standby or device.
Method for recovering tail gas applied to dry ice production system includes the following steps:
Step S1: being introduced to vaporizer 101 for the tail gas for the dry-ice machine 30 for producing dry ice, then right by vaporizer 101
Tail gas gasifies, so that a small amount of drikold gasification being mixed in tail gas, avoids influencing the equipment of process below
Work, for example, avoiding drikold from damaging in high-speed flow to equipment, to guarantee the tail gas recycle process
Stability, the gaseous carbon dioxide after wherein vaporizer 101 is gasified are volume -3~-1 degree Celsius.
Step S2: being input to recycling general pipeline 102 for the gaseous carbon dioxide after gasification, passes through 102 pairs of general pipeline gasifications of recycling
Gaseous carbon dioxide afterwards is collected.
Step S3: recycling general pipeline 102 is pressurizeed by air blower 103 gaseous carbon dioxide being input to circulating water pool, wherein
The moulding pressure of air blower 103 is 0.4~0.6MPa, and wherein the conveyance conduit in circulating water pool is designed to coil form, and
Water temperature is set as 30~35 degrees Celsius in circulating water pool, carries out cold recovery to gaseous carbon dioxide by circulating water pool, at this point,
The temperature of gaseous carbon dioxide is 20~25 degrees Celsius, realizes cold recovery, reduces energy consumption.
Step S4: the gaseous carbon dioxide after cold recovery is input to the feedstock input of gas storage device 10, such as
This, completes to utilize the tail gas recycle of dry-ice machine 30, reduces the discharge of carbon dioxide.
In a preferred embodiment of the invention, further includes step S3.1 between step S3 and step S4: passing through buffer air bag 105
The air-flow of recycling general pipeline 102 is buffered, to prevent excessive to recycling 102 output gas flow pressure of general pipeline and cause air blower
103 damage, wherein the pressure of buffer air bag 105 is about 10~15KPa.
In conclusion the exhaust gas recovery system and method applied to dry ice production system of the invention, design is simple, real
The recycling of existing tail gas, substantially increases the utilization rate to raw material, reduces the discharge of greenhouse gases, and realize to tail gas
Cold recovery reduces energy consumption.
The upper only embodiments of the present invention, are not intended to restrict the invention.For those skilled in the art
For, the invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention are equally replaced
It changes, improve, should all be included within scope of the presently claimed invention.
Claims (8)
1. a kind of exhaust gas recovery system applied to dry ice production system, which includes: sequentially connected gas
Storage device, liquid CO 2 process units and dry-ice machine, which is characterized in that exhaust gas recovery system includes: vaporizer, returns
It receives general pipeline, air blower and follows bad pond；The input terminal of the vaporizer is connect with the tail gas output end of the dry-ice machine；It is described
The output end of vaporizer is connect with the input terminal of recycling general pipeline；The output end of the recycling general pipeline and the input terminal of the air blower
Connection；The output end of the air blower is connect with the input terminal of the circulating water pool；The output end of the circulating water pool with it is described
The connection of gas storage device.
2. the exhaust gas recovery system according to claim 1 applied to dry ice production system, which is characterized in that the recycling
Buffer air bag is provided between general pipeline and the air blower.
3. a kind of method for recovering tail gas applied to dry ice production system, it is applied to based on claim 1 to 2 is any described
The exhaust gas recovery system of dry ice production system, which is characterized in that it includes the following steps:
Step S1: being introduced to vaporizer for the tail gas of dry-ice machine and gasify,；
Step S2: the gaseous carbon dioxide after gasification is input to recycling general pipeline gasification；
Step S3: recycling general pipeline is pressurizeed by air blower gaseous carbon dioxide being input to circulating water pool, and circulating water pool pair is passed through
Gaseous carbon dioxide carries out cold recovery；And
Step S4: the gaseous carbon dioxide after cold recovery is input to the feedstock input of gas storage device.
4. the method for recovering tail gas according to claim 3 applied to dry ice production system, which is characterized in that the step
Gaseous carbon dioxide temperature after gasifying in S1 is -3~-1 degree Celsius.
5. the method for recovering tail gas according to claim 3 applied to dry ice production system, which is characterized in that the step
Gaseous carbon dioxide temperature in S4 Jing Guo cold recovery is 20~25 degrees Celsius.
6. the method for recovering tail gas according to claim 3 applied to dry ice production system, which is characterized in that the air blast
The moulding pressure of machine is 0.4~0.6MPa.
7. the method for recovering tail gas according to claim 3 applied to dry ice production system, which is characterized in that the step
Further include step S3.1 between S3 and step S4: being buffered by air-flow of the buffer air bag to recycling general pipeline.
8. the method for recovering tail gas according to claim 7 applied to dry ice production system, which is characterized in that the buffering
Pressure in air bag is 10~15KPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062687.6A CN109186178A (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust gas recovery system and method applied to dry ice production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062687.6A CN109186178A (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust gas recovery system and method applied to dry ice production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186178A true CN109186178A (en) | 2019-01-11 |
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ID=64910544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811062687.6A Pending CN109186178A (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust gas recovery system and method applied to dry ice production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022011901A1 (en) * | 2020-07-15 | 2022-01-20 | 厦门理工学院 | Tail gas treatment system for solid co2 cleaning machine |
-
2018
- 2018-09-12 CN CN201811062687.6A patent/CN109186178A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022011901A1 (en) * | 2020-07-15 | 2022-01-20 | 厦门理工学院 | Tail gas treatment system for solid co2 cleaning machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
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| RJ01 | Rejection of invention patent application after publication |