CN207738460U - Emptying end gas recovery system in a kind of dry ice production process - Google Patents
Emptying end gas recovery system in a kind of dry ice production process Download PDFInfo
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- CN207738460U CN207738460U CN201721619921.1U CN201721619921U CN207738460U CN 207738460 U CN207738460 U CN 207738460U CN 201721619921 U CN201721619921 U CN 201721619921U CN 207738460 U CN207738460 U CN 207738460U
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- drier
- dry ice
- forecooler
- production process
- ice production
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Abstract
The utility model discloses emptying end gas recovery systems in a kind of dry ice production process, including forecooler, buffer unit, compressor, the first drier, the second drier, liquefaction unit, separator, regenerating unit and heater, buffer unit connects forecooler and compressor, liquefy unit connection forecooler and separator, first drier and the second drier are all connected with compressor, heater and forecooler, regenerating unit connects heater, it is equipped with blow-down pipe on first drier and the second drier, evacuated tube and drain pipe are respectively equipped on separator.The utility model device is with good investment, and operating cost is low, and the tail gas resource utilization generated in dry ice production process is recycled, liquid CO is made again2For manufacturing dry ice, turn waste into wealth, high financial profit.
Description
Technical field
The utility model, which belongs in exhaust-gas resource reutilization technology field more particularly to a kind of dry ice production process, to be vented
Exhaust gas recovery system.
Background technology
Existing dry ice production technology is all by liquid CO mostly2What the method for throttling expansion was produced, this method liquid turns
It is only 0.46 to turn to solids ratio maximum, that is to say, that 46% raw material liq CO2It is converted into dry ice, remaining is as dry ice tail
Gas discharges.This is not only the huge waste to raw material, while also resulting in a large amount of CO2Exhaust gas discharges, and pollutes environment.State at this stage
Interior dry ice enterprise exhausts mostly using the tail gas in dry ice production process as exhaust gas directly emptying, so as to cause raw material liq
CO2Utilization rate is low, and the cost of manufacture of dry ice is high.
Utility model content
The utility model aim is solution the above-mentioned technical problems in the prior art, provides a kind of dry ice production mistake
Emptying end gas recovery system in journey, low equipment investment, operating cost is low, and the tail gas recycling generated in dry ice production process is returned
It receives and recycles, liquid CO is made again2For manufacturing dry ice, turn waste into wealth, high financial profit.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
Emptying end gas recovery system in a kind of dry ice production process, it is characterised in that：Including forecooler, buffer unit, pressure
Contracting machine, the first drier, the second drier, liquefaction unit, separator, regenerating unit and heater, buffer unit connection precooling
Device and compressor, liquefaction unit connection forecooler and separator, the first drier and the second drier are all connected with compressor, heating
Device and forecooler, regenerating unit connect heater, and blow-down pipe is equipped on the first drier and the second drier, is divided on separator
It She You not evacuated tube and drain pipe；The recovery system low equipment investment, operating cost is low, the tail that will be generated in dry ice production process
Gas resource utilization recycles, and liquid CO is made again2For manufacturing dry ice, turn waste into wealth, high financial profit.
Further, it is connected with pneumatic filter in evacuated tube, the fixed gas through separator separation is discharged from evacuated tube, through gas
After the absorption of body filter, purification, suspended particulate substance, dust etc. are eliminated, air will not be polluted after emptying.
Further, contaminant filter, qualified liquid CO are connected on drain pipe2It is discharged from drain pipe, by impurity mistake
After filter, fixation particle, the impurity wherein mixed is removed, is purified, is used further to manufacture dry ice, improve exhaust gas resource
Utilization rate.
Further, it is equipped with the first control valve between the first drier and compressor, is set between the second drier and forecooler
There is the second control valve, open the first control valve, close the second control valve, the dry ice tail gas come out from compressor enters the first drying
It is dehydrated in device, the second drier is then in stand-by state, after the first drier, which absorbs water, to be saturated, opens the second control valve, closes
First control valve, the dry ice tail gas come out from compressor, which then enters in the second drier, to be dehydrated, and is then carried out to the first drier
Regeneration, switching use, and control is simple, and one opens one standby, does not interfere with the operation of system, improves work efficiency.
Further, it is equipped with first switch valve between heater and the first drier, is set between heater and the second drier
There is second switch valve, after the first drier, which absorbs water, to be saturated, opens first switch valve, close second switch valve, filled by regenerating
It sets the first drier after being saturated water suction with heater to regenerate, the second drier then participates in dry work；When second dry
After dry device water suction saturation, second switch valve is opened, first switch valve is closed, after being saturated to water suction by regenerating unit and heater
The second drier regenerated, the first drier then participates in dry work, toggles, and control is simple, does not interfere with system
Operation, improve work efficiency.
The utility model is by adopting the above-described technical solution, have the advantages that：
By the pulse low temperature exhaust gas generated in dry ice production process, first pre-cooled device recycles waste cold, then buffered device buffering
Go compressor to be compressed after voltage stabilizing, subsequently enter and be dehydrated in the first drier, dewatered tail gas return to forecooler with later
Low temperature dry ice tail gas carry out heat exchange precooling, subsequently into liquefaction unit liquefaction, the tail gas after liquefaction finally enters in separator
It is detached, fixed gas is discharged from evacuated tube, remaining as qualified liquid CO2It is discharged from drain pipe, can be used for manufacturing dry
Ice is turned waste into wealth, and the utilization rate of exhaust gas resource is improved；After the first drier, which absorbs water, to be saturated, the second drier is switched to
Working condition, one opens one standby, recycles, does not interfere with the operation of system, improve work efficiency, by regenerating unit and plus
The first drier after hot device is saturated water suction regenerates, in case using.The utility model device is with good investment, operating cost
It is low, the tail gas resource utilization generated in dry ice production process is recycled, liquid CO is made again2For manufacturing dry ice, become
Waste be changed into values, high financial profit.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural schematic diagram of emptying end gas recovery system in a kind of dry ice production process of the utility model.
In figure：1- forecoolers；2- buffer units；3- compressors；The first driers of 4-；The second driers of 5-；6- liquefiers
Group；7- separators；8- regenerating units；9- heaters；The first control valves of 10-；The second control valves of 11-；12- first switch valves；13-
Second switch valve；14- blow-down pipes；15- evacuated tubes；16- drain pipes；17- pneumatic filters；18- contaminant filters.
Specific implementation mode
As shown in Figure 1, for emptying end gas recovery system in a kind of dry ice production process of the utility model, including forecooler 1,
Buffer unit 2, compressor 3, the first drier 4, the second drier 5, liquefaction unit 6, separator 7, regenerating unit 8 and heater
9, buffer unit 2 connects forecooler 1 and compressor 3, and liquefaction unit 6 connects forecooler 1 and separator 7, and the connection of regenerating unit 8 adds
Hot device 9, the first drier 4 and the second drier 5 are all connected with compressor 3, heater 9 and forecooler 1, the first drier 4 and pressure
It is equipped with the first control valve 10 between contracting machine 3, the second control valve 11 is equipped between the second drier 5 and forecooler 1, opens the first control
Valve 10 processed closes the second control valve 11, and the dry ice tail gas come out from compressor 3, which enters in the first drier 4, to be dehydrated, the second drying
Device 5 is then in stand-by state, after the first drier 4, which absorbs water, to be saturated, opens the second control valve 11, closes the first control valve 10,
The dry ice tail gas come out from compressor 3, which then enters in the second drier 5, to be dehydrated, and is then regenerated, is switched to the first drier 4
It uses, control is simple, and one opens one standby, does not interfere with the operation of system, improves work efficiency.
It is equipped with first switch valve 12 between heater 9 and the first drier 4, is equipped between heater 9 and the second drier 5
Second switch valve 13 opens first switch valve 12 after the first drier 4, which absorbs water, to be saturated, and second switch valve 13 is closed, by again
The first drier 4 after generating apparatus 8 and heater 9 are saturated water suction regenerates, and the second drier 5 then participates in dry work；
After the second drier 5, which absorbs water, to be saturated, second switch valve 13 is opened, closes first switch valve 12, passes through regenerating unit 8 and heating
The second drier 5 after device 9 is saturated water suction regenerates, and the first drier 4 then participates in dry work, toggles, and controls
Simply, the operation for not interfering with system, improves work efficiency.It is equipped with blow-down pipe on first drier 4 and the second drier 5
14, the regeneration gas that blow-down pipe 14 is used to generate the first drier 4 and the second drier 5 in regenerative process is vented, and is made at its
In drying regime.It is respectively equipped with evacuated tube 15 and drain pipe 16 on separator 7, pneumatic filter 17 is connected in evacuated tube 15,
The fixed gas detached through separator 7 is discharged from evacuated tube 15, after the absorption of pneumatic filter 17, purification, eliminates suspended particulate
Object, dust etc. will not pollute air after emptying.Contaminant filter 18, qualified liquid CO are connected on drain pipe 162
It is discharged from drain pipe 16, after contaminant filter 18, removes fixation particle, the impurity wherein mixed, purified, then use
In manufacture dry ice, the utilization rate of exhaust gas resource is improved.
It is reasonable flexibly to be chosen according to the size of recycling dry ice tail gas tolerance and the actual conditions at dry ice tail gas recycle scene
Compressor 3, liquefaction unit 6, energy expenditure is low.One control system of each collaborative share, can further decrease I＆C system
Input realizes the principle that resource maximally utilizes.
By generated in dry ice production process -40~-55 DEG C of pulse low temperature exhaust gas, first pre-cooled device 1 recycles waste cold, then
Buffered device 2 goes compressor 3 to be compressed to 1.8~2.8MPa after buffering voltage stabilizing, subsequently enters and is dehydrated in the first drier 4, takes off
Tail gas after water returns to forecooler 1 and carries out heat exchange precooling with low temperature dry ice tail gas later, liquefies subsequently into liquefaction unit 6,
Tail gas after liquefaction finally enters to be detached in separator 7, and fixed gas is discharged from evacuated tube 15, remaining as qualified liquid
Body CO2It is discharged from drain pipe 16, can be used for manufacturing dry ice, turn waste into wealth, improve the utilization rate of exhaust gas resource；When the first drying
After the water suction saturation of device 4, the second drier 5, which switches, to be in working condition, and one opens one standby, recycles, does not interfere with the fortune of system
Row, improves work efficiency, and the first drier 4 after being saturated to water suction by regenerating unit 8 and heater 9 regenerates, with
It is standby to use.The utility model device is with good investment, and operating cost is low, again by the tail gas resource utilization generated in dry ice production process
It utilizes, liquid CO is made again2For manufacturing dry ice, turn waste into wealth, high financial profit.
The above are only specific embodiments of the present invention, but the technical characteristics of the utility model is not limited thereto.Appoint
How based on the utility model, for the technical problem for solving essentially identical, essentially identical technique effect is realized, it is made
Simple change, equivalent replacement or modification etc., are all covered by among the scope of protection of the utility model.
Claims (5)
1. emptying end gas recovery system in a kind of dry ice production process, it is characterised in that：Including forecooler, buffer unit, compression
Machine, the first drier, the second drier, liquefaction unit, separator, regenerating unit and heater, the buffer unit connect institute
State forecooler and the compressor, the liquefaction unit connects the forecooler and the separator, first drier with
Second drier is all connected with the compressor, the heater and the forecooler, and the regenerating unit connection is described to be added
It is equipped with blow-down pipe on hot device, first drier and second drier, evacuated tube is respectively equipped on the separator
And drain pipe.
2. emptying end gas recovery system in a kind of dry ice production process according to claim 1, it is characterised in that：The row
Pneumatic filter is connected on blank pipe.
3. emptying end gas recovery system in a kind of dry ice production process according to claim 1, it is characterised in that：The row
Contaminant filter is connected in liquid pipe.
4. emptying end gas recovery system in a kind of dry ice production process according to claim 1, it is characterised in that：Described
It is equipped with the first control valve between one drier and the compressor, second is equipped between second drier and the forecooler
Control valve.
5. emptying end gas recovery system in a kind of dry ice production process according to claim 1, it is characterised in that：It is described to add
It is equipped with first switch valve between hot device and first drier, second is equipped between the heater and second drier
Switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619921.1U CN207738460U (en) | 2017-11-28 | 2017-11-28 | Emptying end gas recovery system in a kind of dry ice production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619921.1U CN207738460U (en) | 2017-11-28 | 2017-11-28 | Emptying end gas recovery system in a kind of dry ice production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738460U true CN207738460U (en) | 2018-08-17 |
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ID=63116217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721619921.1U Active CN207738460U (en) | 2017-11-28 | 2017-11-28 | Emptying end gas recovery system in a kind of dry ice production process |
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| CN (1) | CN207738460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021196423A1 (en) * | 2020-04-01 | 2021-10-07 | 厦门理工学院 | Circulating solid co2 cleaning system |
-
2017
- 2017-11-28 CN CN201721619921.1U patent/CN207738460U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021196423A1 (en) * | 2020-04-01 | 2021-10-07 | 厦门理工学院 | Circulating solid co2 cleaning system |
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