CN109847399A - A kind of volatile materials condensation recycling method and device to be run without interruption using gas self heat defrosting - Google Patents
A kind of volatile materials condensation recycling method and device to be run without interruption using gas self heat defrosting Download PDFInfo
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- 238000010257 thawing Methods 0.000 title claims abstract description 48
- 238000009833 condensation Methods 0.000 title claims abstract description 37
- 230000005494 condensation Effects 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 159
- 238000011084 recovery Methods 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000005416 organic matter Substances 0.000 claims abstract description 30
- 238000002425 crystallisation Methods 0.000 claims abstract description 28
- 230000008025 crystallization Effects 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 230000008014 freezing Effects 0.000 claims abstract description 10
- 238000007710 freezing Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 19
- 238000005057 refrigeration Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 210000004243 sweat Anatomy 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000155 melt Substances 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
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Abstract
A kind of volatile materials condensation recycling method and device to be run without interruption using gas self heat defrosting, it is characterized in that the method is that the volatile organic matter gas of the outlet outflow on raw material storage tank gas discharge outlet or conveying groove tank is introduced condensing recovery unit using compress cell, volatile organic matter gas is lower than the volatile organic matter crystallization and freezing of condensation point after the liquefaction of condensing recovery unit, and the volatile organic matter liquid after liquefaction flows into condensing recovery unit and recycled；Secondly, when the admission pressure for entering condensing recovery unit rises to setting value because of volatile organic gases crystallization and freezing person plug, then the overheated gas of compress cell is introduced directly into condensing recovery unit and melts the organic matter of crystallization and freezing, realize the recycling of organic matter.Energy-saving effect of the present invention is good, and recovery utilization rate is high.
Description
Technical field
The present invention relates to a kind of chemical gases processing technique, the recycling of especially a kind of tank car or tank slot conveying gas
Technology, specifically a kind of volatile materials condensation recycling method and dress to be run without interruption using gas self heat defrosting
Set, the device can using volatile material gases self heat will because cryogenic condensation (common the operation is stable be below -40 DEG C,
Even up to -110 DEG C) when the liquid of organic gas that solidifies be melted into liquid, ensuring that volatile materials recyclable device is uninterrupted
The operation energy consumption of volatile materials recyclable device is reduced while operation.The device is energy conservation and environment protecting very significant one
The equipment of kind volatile materials recycling and reusing.
Background technique
It is well known that chemical products or raw material can be in storage tanks under the influence of rising in storage or transport because of charging and temperature
Or volatilization in conveying groove tank, it will lead to chemical products or raw material be directly discharged into atmosphere, very big pollution is caused to environment；For reduction pair
The pollution of environment, the organic gas that need to be excluded to storage tank or conveying groove tank are recycled.
Usual storage tank or the gas of conveying groove tank discharge have the following characteristics that (1) gas is large-minded.(2) waving in gas
Hair property gas, i.e. organic gas, concentration is high, and most poisonous and harmful.In view of the above feature, it is necessary to be returned to such gas
It receives, that is, reduces and very high economic value organic chemical industry product have been recycled again to the pollution of environment.
With the gradually reinforcement of social environment consciousness and being gradually increased for environmental protection standard, environmental protection supervision is more and more tighter, this
Class volatile material gases cannot direct emission again.At present volatile materials recyclable device be to guarantee uninterrupted continuous fortune
Row all carries out defrosting processing using organic matter of the other way to solidification, need to consume other energy or cause device operation not
Stability.Since the gas of volatile materials storage tank or conveying groove tank discharge overcomes follow up device to generate before entering device
Supercharging device need to be arranged in resistance, and while lift gas pressure, temperature also accordingly increases supercharging device.
If defrosting can be carried out using organic matter of the volatile material gases own temperature to solidification, energy will be greatlyd save
Consumption, improves the operation stability of device, guarantees the uninterrupted operation of device.
Summary of the invention
The purpose of the present invention is recycle the big problem of existing energy waste, invention for existing escaping gas
It is a kind of environmental protection and energy-saving effect significantly using gas self heat defrosting run without interruption volatile materials be condensed back to debit
Method and device, it carries out defrosting processing using organic matter of the volatile material gases self heat to solidification, improves the fortune of device
Row stability guarantees the uninterrupted operation of device, energy saving.
One of the technical scheme is that:
A kind of volatile materials condensation recycling method to be run without interruption using gas self heat defrosting, it is characterized in that using increasing
Press unit that the volatile organic matter gas of the outlet outflow on raw material storage tank gas discharge outlet or conveying groove tank is introduced condensation
Recovery unit, volatile organic matter gas are lower than the volatile organic matter crystallization and freezing of condensation point after the liquefaction of condensing recovery unit,
Volatile organic matter liquid after liquefaction flows into condensing recovery unit and is recycled；Secondly, when into condensing recovery unit into
When atmospheric pressure rises to setting value because of volatile organic gases crystallization and freezing person plug, then the overheated gas of compress cell is direct
It introduces condensing recovery unit to melt the organic matter of crystallization and freezing, realizes the recycling of organic matter.
The storage tank or conveying groove tank discharge gas is the mixed gas of volatile organic gases and air (or nitrogen)；
Along the storage tank or the circulating direction of conveying groove tank discharge gas, safety is first passed through before gas is by the compress cell and is let out
Crimping mouth is to guarantee raw material storage tank and convey the safety of groove tank；On pipeline between the storage tank or groove tank and compress cell also
Fire arrester, filter and valve are installed and are provided with the pressure transmitter being monitored to discharge pressure.
The condensing recovery unit includes at least three condensers, and preferably the quantity of condenser is 3 ~ 8.
The substance of the condensing recovery unit recycling passes through pump or pressure itself discharge；Gas is recycled in condensing recovery unit
Body outlet end is equipped with valve and fire arrester；Volatile materials in condensing recovery unit is volatile organic liquid, volatility
Inorganic liquid, volatile solid or any combination.
Supercharging equipment in the compress cell is blower or compressor；Condenser in the condensing recovery unit is
In plate heat exchanger, double-tube heat exchanger, coil heat exchanger, plate-fin heat exchanger, shell and tube exchanger or spiral heat exchanger
Any one or the combination of several of them；The condensing recovery unit refrigeration system is that a refrigeration compressor or 2-10 platform freeze
The combination of compressor；Condenser is forecooler, first-stage condenser, secondary condenser, three-level condensation in the condensing recovery unit
Two kinds in device and level Four condenser and combination of the above；Condensing recovery unit condensation temperature is any between -150 DEG C to 25 DEG C
Temperature, and forecooler, first-stage condenser, secondary condenser, three-level condenser, level Four condenser relevant temperature are any mating makes
With；Refrigeration system is using the direct sweat cooling of refrigerant or using the cooling a certain intermediate refrigerating medium of refrigerant in condensing recovery unit
Condensing recovery is carried out to volatile materials, or condensing recovery is carried out using the right volatile materials of two kinds of groups in above-mentioned technology.
Technical solution of the present invention second is that:
A kind of volatile materials condensate recycling device to be run without interruption using gas self heat defrosting, it is characterized in that it is wrapped
It includes:
One supercharging device 22, the supercharging device are used to be sent into after raw material storage tank or the gas boosting of conveying groove tank discharge and be condensed back to
Receive unit；
One condensing recovery unit；The condensing recovery unit includes forecooler 10, first-stage condenser 12, secondary condenser 2,4, three-level
Condenser 19,6, forecooler 10, first-stage condenser 12, secondary condenser 2, the series connection of three-level condenser 19 form the first condensing recovery
Unit, forecooler 10, first-stage condenser 12, secondary condenser 4, the series connection of three-level condenser 6 form the second condensing recovery unit, the
It is connected between one condensing recovery unit and the second condensing recovery unit by pipeline；Forecooler 10 and secondary condenser 2,4 are equal
Pipeline by installing valve is connected with the export pipeline of supercharging device 22；The high temperature and pressure volatility that supercharging device 22 is discharged
The pre-cooled device 10 of organic gas enters after first-stage condenser 12 exchanges heat after being pre-chilled enters back into secondary condenser 2 and three-level condenser
19 exchange heat, and become liquid and solid after reaching crystallization temperature, and liquid is discharged into fluid reservoir 14 through three-level condenser 19,
Solid is deposited in secondary condenser 2 and three-level condenser 19, uncooled gas through three-level condenser be discharged into forecooler with
The high-temperature gas of supercharging device input exchanges heat to be lowered into the temperature of gas in first-stage condenser, mitigates its cooling load；When
When the admission line of secondary condenser 2 and three-level condenser 19 rises to setting value because of Crystallization Plugging pressure, supercharging device is no longer
It supplies to forecooler and is directly supplied to secondary condenser 2, it is cold to the level-one in the first condensing recovery unit using high-temperature gas
Condenser 12 and secondary condenser 2 carry out defrosting, and the liquid that defrosting generates enters in fluid reservoir 14, and the gas that defrosting generates is through three-level
Condenser 19 enters back into first-stage condenser 12 after entering forecooler 10, enters back into secondary condenser 4, carries out in three-level condenser 6
Condensation-crystallization, until 19 outlet temperature of three-level condenser reaches setting value, the high-temperature gas valve into secondary condenser 2 is closed
It closes, the high-temperature gas valve into forecooler 10 is again turned on, and the pre-cooled device of high-temperature gas enters first-stage condenser, B-grade condensation
Device 4, three-level condenser 6 carry out heat exchange condensation-crystallization, and the liquid for condensing generation is entered in fluid reservoir 14 by three-level condenser 6,
Gas, which enters in forecooler, cools down high-temperature gas, reduces the load of first-stage condenser, solid crystal is in secondary condenser
4, it in three-level condenser 6, when the pressure in the air inlet pipe of secondary condenser 4 is greater than the set value, opens and enters secondary condenser 4
Valve high-temperature gas is introduced directly into secondary condenser 4, simultaneously close off connection forecooler and supercharging device outlet between pipe
The defrosting operation for entering valve, realizing to secondary condenser 4 and three-level condenser 6 in the second condensing recovery unit of road,
The liquid that defrosting generates is entered in fluid reservoir 14 by three-level condenser 6, and the pre-cooled device of gas, first-stage condenser are again introduced into the
Secondary condenser 2, three-level condenser 19 in one condensing recovery unit condense, until the defrosting knot of the second condensing recovery unit
Structure, the high-temperature gas air intake valve into secondary condenser 4 are closed, and the high-temperature gas air intake valve into forecooler 10 is beaten again
It opens, so recycles, the first condensing recovery unit and the second condensing recovery units alternately carry out crystallization defrosting operation；
One fluid reservoir 14, the fluid reservoir 14 are used to receive during three-level condenser 19,6 and the condensation of first-stage condenser 12 and defrosting
The liquid of generation is simultaneously discharged in the liquid level for reaching setting by positive displacement pump 13.
The forecooler 10 is connected with low concentration oil gas vent.
Temperature sensor 7,18 for detecting defrosting progress is installed on the escape pipe of the three-level condenser 19,6.
Pressure sensor 20,21 is installed on connection secondary condenser 2,4 and 19,6 pipeline of three-level condenser, when pressure passes
When the pressure of sensor 20,21 is more than setting value, that is, open the high temperature on connection secondary condenser 2,4 and supercharging device gas exhaust piping
Gas valve, make supercharging device be discharged high-temperature gas be directly entered secondary condenser 2,4, simultaneously close off high-temperature gas directly into
Enter the valve of forecooler.
Temperature sensor 23 is installed on the air inlet pipeline of the first-stage condenser 12 to adjust level-one condensation in real time
The workload of device 12.
Three-level condenser be also serially connected with level Four, Pyatyi ... grade condenser；Forecooler 10 and first-stage condenser 12 are also with two
Grade condenser, three-level condenser concatenate to be formed third, the 4th ... condensing recovery unit.
Beneficial effects of the present invention:
It is an object of the invention to carry out defrosting processing using organic matter of the volatile material gases self heat to solidification, improve
The operation stability of device guarantees the uninterrupted operation of device, energy saving.Be it is a kind of environmental protection and energy-saving effect significantly fill
It sets.The device, which will be substantially reduced, generates wave to refrigeration system Suck and exhaust pressure to coagulated substance defrosting using refrigeration system heat
It is dynamic, and cause breakdown of refrigeration system, improve the operation stability of refrigeration system and recyclable device.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one.
As shown in Figure 1.
A kind of volatile materials condensation recycling method to be run without interruption using gas self heat defrosting, its essence is benefits
The volatile organic matter gas of the outlet outflow on raw material storage tank gas discharge outlet or conveying groove tank is introduced with compress cell
Condensing recovery unit, volatile organic matter gas are solidifying lower than the volatile organic matter crystallization of condensation point after the liquefaction of condensing recovery unit
Gu the volatile organic matter liquid after liquefaction flows into condensing recovery unit and is recycled；Secondly, when entering condensing recovery unit
When admission pressure rises to setting value because of volatile organic gases crystallization and freezing person plug, then the overheated gas of compress cell is straight
The organic matter thawing for introducing condensing recovery unit for crystallization and freezing is connect, realizes the recycling of organic matter.The storage tank or delivery chute
Tank discharge gas is the mixed gas of volatile organic gases and air (or nitrogen)；Gas is discharged along the storage tank or conveying groove tank
The circulating direction of body first passes through safety relief interface before gas is by the compress cell to guarantee raw material storage tank and conveying
The safety of groove tank；Fire arrester, filter and valve are also equipped on pipeline between the storage tank or groove tank and compress cell
And it is provided with the pressure transmitter being monitored to discharge pressure.The condensing recovery unit includes at least three condensers,
It is preferred that the quantity of condenser is 3 ~ 8.The substance of the condensing recovery unit recycling passes through pump or pressure itself discharge；It is condensing
Recovery unit gas recovery outlet end is equipped with valve and fire arrester.Supercharging equipment in the compress cell is blower or pressure
Contracting machine；Condenser in the condensing recovery unit is plate heat exchanger, double-tube heat exchanger, coil heat exchanger, plate fin heat-exchanging
Any one or the combination of several of them in device, shell and tube exchanger or spiral heat exchanger；The condensing recovery unit style
Cooling system is the combination of a refrigeration compressor or 2-10 platform refrigeration compressor；Condenser is pre-cooling in the condensing recovery unit
Two kinds in device, first-stage condenser, secondary condenser, three-level condenser and level Four condenser and combination of the above；Condensing recovery list
First condensation temperature is the arbitrary temp between -150 DEG C to 25 DEG C, cold with forecooler, first-stage condenser, secondary condenser, three-level
Condenser, level Four condenser relevant temperature arbitrarily match；Refrigeration system is directly evaporated using refrigerant in condensing recovery unit
Refrigeration carries out condensing recovery to volatile materials using the cooling a certain intermediate refrigerating medium of refrigerant, or using in above-mentioned technology two
The right volatile materials of kind group carries out condensing recovery.
Embodiment two.
A kind of volatile materials condensate recycling device to be run without interruption using gas self heat defrosting, it includes pressurization
Device 22: condensing recovery unit and fluid reservoir 14, as shown in Figure 1.Supercharging device 22 is used for raw material storage tank or conveying groove tank row
Condensing recovery unit is sent into after gas boosting out；Condensing recovery unit includes forecooler 10, first-stage condenser 12, B-grade condensation
Device 2,4 ..., three-level condenser 19,6 ..., forecooler 10, first-stage condenser 12, secondary condenser 2, three-level condenser 19 are gone here and there
Connection forms the first condensing recovery unit, forecooler 10, first-stage condenser 12, secondary condenser 4, and the series connection of three-level condenser 6 is formed
Second condensing recovery unit, first-stage condenser 12, secondary condenser 2 and remaining grade of condenser, three-level condenser can also concatenate shape
At third, the 4th ... condensing recovery unit is provided with two recovery units in Fig. 1 altogether, therefore the present embodiment is recycled with two
It is illustrated for unit, the principle of three or three or more recovery units is identical.The first condensing recovery list of the present embodiment
It is connected between member and the second condensing recovery unit by pipeline；Forecooler 10 and secondary condenser 2,4 pass through installation valve
Pipeline be connected with the export pipeline of supercharging device 22；The high temperature and pressure volatile organic matter gas warp that supercharging device 22 is discharged
Forecooler 10 enters back into secondary condenser 2 after entering the heat exchange of first-stage condenser 12 after being pre-chilled and three-level condenser 19 exchanges heat,
Become liquid and solid after reaching crystallization temperature, liquid is discharged into fluid reservoir 14 through three-level condenser 19, and solid is deposited on
In secondary condenser 2 and three-level condenser 19, uncooled gas is discharged into forecooler defeated with supercharging device through three-level condenser
The high-temperature gas entered exchanges heat to be lowered into the temperature of gas in first-stage condenser, mitigates its cooling load；When secondary condenser 2
When rising to setting value because of Crystallization Plugging pressure with the admission line of three-level condenser 19, supercharging device is no longer supplied to forecooler
And directly supplied to secondary condenser 2, using high-temperature gas to the first-stage condenser 12 and second level in the first condensing recovery unit
Condenser 2 carries out defrosting, and the liquid that defrosting generates enters in fluid reservoir 14, and the gas that defrosting generates enters through three-level condenser 19
First-stage condenser 12 is entered back into after forecooler 10, is entered back into secondary condenser 4, is carried out condensation-crystallization in three-level condenser 6, until
19 outlet temperature of three-level condenser reaches setting value, and the high-temperature gas valve into secondary condenser 2 is closed, into forecooler 10
High-temperature gas valve be again turned on, the pre-cooled device of high-temperature gas enters first-stage condenser, secondary condenser 4, three-level condenser 6
Heat exchange condensation-crystallization is carried out, the liquid for condensing generation is entered in fluid reservoir 14 by three-level condenser 6, and gas enters in forecooler
High-temperature gas is cooled down, the load of first-stage condenser is reduced, solid crystal in secondary condenser 4, three-level condenser 6,
When the pressure in the air inlet pipe of secondary condenser 4 is greater than the set value, the valve for entering secondary condenser 4 is opened by high-temperature gas
It is introduced directly into secondary condenser 4, simultaneously closes off the valve that enters on the pipeline between connection forecooler and supercharging device outlet, it is real
Now to the defrosting operation of secondary condenser 4 and three-level condenser 6 in the second condensing recovery unit, the liquid that defrosting generates passes through
Three-level condenser 6 enters in fluid reservoir 14, and the pre-cooled device of gas, first-stage condenser are again introduced into the first condensing recovery unit
Secondary condenser 2, three-level condenser 19 condense, until the defrosting structure of the second condensing recovery unit, into secondary condenser 4
High-temperature gas air intake valve is closed, and the high-temperature gas air intake valve into forecooler 10 is again turned on, and is so recycled, the first condensation
Recovery unit and the second condensing recovery units alternately carry out crystallization defrosting operation；Fluid reservoir 14 is for receiving three-level condenser 19,6
And the condensation of first-stage condenser 12 is carried out with the liquid of generation during defrosting and in the liquid level for reaching setting by positive displacement pump 13
Discharge.Forecooler 10 is connected with low concentration oil gas vent.It is equipped on the escape pipe of the three-level condenser 19,6 for examining
Survey the temperature sensor 7,18 of defrosting progress.Pressure is installed on connection secondary condenser 2,4 and 19,6 pipeline of three-level condenser
Sensor 20,21 opens connection secondary condenser 2,4 and pressurization when the pressure of pressure sensor 20,21 is more than setting value
High-temperature gas valve on device gas exhaust piping, the high-temperature gas that supercharging device is discharged are directly entered secondary condenser 2,4, together
When close high-temperature gas and be directly entered the valve of forecooler.
The course of work of the invention is further described by taking two condensing recovery units as an example below.
After supercharging device 22 starts, the first valve 1 is closed at this time, the second valve 3 is opened, the closing of third valve 5, the 4th
Valve 8 is closed, the 5th valve 9 is closed, the 6th valve 11 is closed, the 7th valve 15 is opened, the 8th valve 16 is opened, the 9th valve
Door 17 is closed.
Through the pressurization of supercharging device 22, (temperature can increase 15- simultaneously through pipeline connection for storage tank or the gas of conveying groove tank discharge
50 DEG C) after, the second valve 3 is first passed around, enters first-stage condenser 12 after tentatively cooling down into forecooler 10.Gas is by level-one
Further cooling carries out cryogenic condensation into secondary condenser 2 and three-level condenser 19 through the 7th valve 15 to condenser 12；Through low
The condensed gas of temperature flows into forecooler 10 by the 8th valve 16, and cryogenic gas exports supercharging device 22 in forecooler 10
Hot gas exchanges heat, and reduces by 12 load of first-stage condenser.
The high volatile materials of condensation point can be solidified in secondary condenser 2 and 19 surface crystallization of three-level condenser；With operation
The substance of the extension of time, heat exchanger surface solidification is more and more thicker, and gas flow blocking, heat transfer effect is caused sharply to decline.
After the perception of differential pressure transmitter 20 enters secondary condenser 2 and the pressure difference of three-level condenser 19 reaches setting value out
First valve 1 is opened, the second valve 3 is closed, third valve 5 is closed, the 4th valve 8 is closed, the 5th valve 9 is opened, the 6th valve
Door 11 is opened, the 7th valve 15 is closed, the 8th valve 16 is closed, the 9th valve 17 is opened, and is pressurized and is heated up through supercharging device 22
Gas enter secondary condenser 2 and three-level condenser 19 and carry out defrosting to it, the volatile materials of solidification becomes liquid inflow
Liquid storage oil tank 14；The gas of three-level condenser 19 is through the 9th valve 17 out) forecooler 10 and first-stage condenser 12 are flowed into, through the 6th
Valve 11 enters secondary condenser 4 and three-level condenser 6；Gas is in secondary condenser 4 and three-level condenser 6 by low temperature cold
It is solidifying, bleeder after the hot gas that forecooler 10 and supercharging device 22 export is exchanged heat is flowed into through the 5th valve 9.Second valve at this time
Door 3 is that 22 closed enter 10 without gas.
Temperature sensor 18 perceives gas and goes out three-level condenser 19 higher than after set temperature after running for a period of time, melts
White process terminates.The first valve 1 is closed at this time, the second valve 3 is opened, third valve 5 is closed, the closing of the 4th valve 8, the 5th
Valve 9 is opened, the 6th valve 11 is opened, the 7th valve 15) it closes, the closing of the 8th valve 16, the 9th valve 17 is closed.Gas warp
Pipeline connection is further through first-stage condenser 12 into forecooler 10, first-stage condenser 12 through supercharging device 22, the second valve 3
Cooling carries out cryogenic condensation through the 6th valve 11, into secondary condenser 4 and three-level condenser 6；Gas after cryogenic condensation
Forecooler 10 is flowed by the 5th valve 9, cryogenic gas exchanges heat in the hot gas that forecooler 10 exports supercharging device 22, drops
Low 12 load of first-stage condenser.
The after the pressure difference that the perception of differential pressure transmitter 21 enters secondary condenser 4 and three-level condenser 6 reaches setting value
One valve 1 is closed, the second valve 3 is closed, third valve 5 is opened, the 4th valve 8 is opened, the 5th valve 9 is closed, the 6th valve
11 close, the 7th valve 15 is opened, the 8th valve 16 is opened, and the 9th valve 17 is closed.It is pressurized and heats up through supercharging device 22
Gas enters secondary condenser 4 and three-level condenser 6 and carries out defrosting to it, and the volatile materials of solidification becomes liquid and flows into liquid storage
Tank 14；The gas of three-level condenser 6 flows into forecooler 10 and first-stage condenser 12 through the 4th valve 8 out, through the 7th valve 15 into
Enter secondary condenser 2 and three-level condenser 19；Gas in secondary condenser 2 and three-level condenser 19 by cryogenic condensation, through
Eight valves 16 flow into bleeder after the hot gas that forecooler 10 and supercharging device 22 export is exchanged heat.Second valve 3 at this time
It is that 22 closed enter 10 without gas.
Temperature sensor 7 perceives gas and goes out three-level condenser 6 higher than after set temperature after running for a period of time, defrosting
Process terminates.The first valve 1 is closed at this time, the second valve 3 is opened, third valve 5 is closed, the 4th valve 8 is closed, the 5th valve
Door 9 is closed, the 6th valve 11 is closed, the 7th valve 15 is opened, the 8th valve 16 is opened, and the 9th valve 17 is closed.Gas is through pipe
Road connection is through supercharging device 22, the second valve 3, into forecooler 10, first-stage condenser 12, further drops through first-stage condenser 12
Seven valve 15 of Wen Jing carries out cryogenic condensation into secondary condenser 2 and three-level condenser 19；Gas after cryogenic condensation is logical
Cross the 8th valve 16) forecooler 10 is flowed into, cryogenic gas exchanges heat in the hot gas that forecooler 10 exports supercharging device 22, drops
Low 12 load of first-stage condenser.
By above-mentioned outflow, two groups of heat exchangers can realize continuously condensation, defrosting process.
When temperature sensor 23 perceives temperature lower than set temperature, level-one refrigerator 12 is automatically closed, and saves operation
The stable operation of energy consumption guarantee level-one refrigeration system.
Condensation and the volatile materials liquid melted flow into fluid reservoir 14, and positive displacement pump 13 is by liquid after reaching setting liquid level
It is transported to user designated place.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (10)
1. a kind of volatile materials condensation recycling method to be run without interruption using gas self heat defrosting, it is characterized in that utilizing
Compress cell introduces the volatile organic matter gas of the outlet outflow on raw material storage tank gas discharge outlet or conveying groove tank cold
Solidifying recovery unit, volatile organic matter gas are solidifying lower than the volatile organic matter crystallization of condensation point after the liquefaction of condensing recovery unit
Gu the volatile organic matter liquid after liquefaction flows into condensing recovery unit and is recycled；Secondly, when entering condensing recovery unit
When admission pressure rises to setting value because of volatile organic gases crystallization and freezing person plug, then the overheated gas of compress cell is straight
The organic matter thawing for introducing condensing recovery unit for crystallization and freezing is connect, realizes the recycling of organic matter.
2. according to the method described in claim 1, it is characterized in that the storage tank or conveying groove tank discharge gas has for volatility
The mixed gas of machine gas and air or mixed gas for volatile organic gases and nitrogen；Along the storage tank or conveying groove tank
The circulating direction of gas is discharged, first passes through safety relief interface before gas is by the compress cell to guarantee raw material storage tank
With the safety of conveying groove tank；Fire arrester, filter are also equipped on pipeline between the storage tank or groove tank and compress cell
With valve and be provided with the pressure transmitter being monitored to discharge pressure.
3. according to the method described in claim 1, it is characterized in that the condensing recovery unit include at least three condensers, it is excellent
The quantity for selecting condenser is 3 ~ 8.
4. according to the method described in claim 1, it is characterized in that the substance that recycles of the condensing recovery unit by pump or from
Body pressure venting；Valve and fire arrester are equipped on condensing recovery unit gas recovery outlet end.
5. according to the method described in claim 1, it is characterized in that the supercharging equipment in the compress cell is blower or compression
Machine；Condenser in the condensing recovery unit be plate heat exchanger, double-tube heat exchanger, coil heat exchanger, plate-fin heat exchanger,
Any one or the combination of several of them in shell and tube exchanger or spiral heat exchanger；The condensing recovery unit, which freezes, is
System is the combination of a refrigeration compressor or 2-10 platform refrigeration compressor；In the condensing recovery unit condenser be forecooler,
Two kinds in first-stage condenser, secondary condenser, three-level condenser and level Four condenser and combination of the above；Condensing recovery unit is cold
Solidifying temperature is the arbitrary temp between -150 DEG C to 25 DEG C, with forecooler, first-stage condenser, secondary condenser, three-level condenser,
Level Four condenser relevant temperature arbitrarily matches；In condensing recovery unit refrigeration system using the direct sweat cooling of refrigerant or
Condensing recovery is carried out to volatile materials using the cooling a certain intermediate refrigerating medium of refrigerant, or using two kinds of combinations in above-mentioned technology
It spends volatile materials and carries out condensing recovery.
6. a kind of volatile materials condensate recycling device to be run without interruption using gas self heat defrosting, it is characterized in that it is wrapped
It includes:
One supercharging device (22), the supercharging device are used to be sent into after raw material storage tank or the gas boosting of conveying groove tank discharge and condense
Recovery unit；
One condensing recovery unit；The condensing recovery unit include forecooler (10), first-stage condenser (12), secondary condenser (2,
4), three-level condenser (19,6), forecooler (10), first-stage condenser (12), secondary condenser (2), three-level condenser (19) string
Connection forms the first condensing recovery unit, forecooler (10), first-stage condenser (12), secondary condenser (4), three-level condenser (6)
Series connection forms the second condensing recovery unit, is connected between the first condensing recovery unit and the second condensing recovery unit by pipeline
It is logical；Forecooler (10) and secondary condenser (2,4) pass through the export pipeline phase of the pipeline and supercharging device (22) of installation valve
Connection；
One fluid reservoir (14), the fluid reservoir (14) is for receiving three-level condenser (19,6) and first-stage condenser (12) condensation and melting
The white liquid generated in the process is simultaneously discharged in the liquid level for reaching setting by positive displacement pump (13).
7. device according to claim 6, it is characterized in that the forecooler (10) is connected with low concentration oil gas vent；Increase
Enter first-stage condenser (12) after the pre-cooled device of high temperature and pressure volatile organic matter gas (10) pre-cooling of pressure device (22) discharge
Secondary condenser (2) is entered back into after heat exchange and three-level condenser (19) exchanges heat, and becomes liquid after reaching crystallization temperature and is consolidated
Body, liquid are discharged into fluid reservoir (14) through three-level condenser (19), and solid is deposited on secondary condenser (2) and three-level condensation
In device (19), uncooled gas is discharged into the high-temperature gas inputted in forecooler with supercharging device through three-level condenser and exchanges heat to drop
The low temperature into gas in first-stage condenser, mitigates its cooling load；When secondary condenser (2) and three-level condenser (19)
When admission line rises to setting value because of Crystallization Plugging pressure, supercharging device is no longer to forecooler gas supply and directly to B-grade condensation
Device (2) gas supply, using high-temperature gas to the first-stage condenser (12) and secondary condenser (2) progress in the first condensing recovery unit
Defrosting, the liquid that defrosting generates enter in fluid reservoir (14), and the gas that defrosting generates enters forecooler through three-level condenser (19)
(10) first-stage condenser (12) are entered back into after, are entered back into secondary condenser (4), condensation-crystallization are carried out in three-level condenser (6), directly
Reach setting value to three-level condenser (19) outlet temperature, the high-temperature gas valve into secondary condenser (2) is closed, into pre-
The high-temperature gas valve of cooler (10) is again turned on, the pre-cooled device of high-temperature gas enter first-stage condenser, secondary condenser (4),
Three-level condenser (6) carries out heat exchange condensation-crystallization, and the liquid for condensing generation enters fluid reservoir (14) by three-level condenser (6)
In, gas, which enters in forecooler, cools down high-temperature gas, reduces the load of first-stage condenser, solid crystal is in B-grade condensation
In device (4), three-level condenser (6), when the pressure in the air inlet pipe of secondary condenser (4) is greater than the set value, opens and enter two
High-temperature gas is introduced directly into secondary condenser (4) by the valve of grade condenser (4), simultaneously closes off connection forecooler and supercharging device
On pipeline between outlet enter valve, realize in the second condensing recovery unit secondary condenser (4) and three-level condensation
The defrosting operation of device (6), the liquid that defrosting generates are entered in fluid reservoir (14) by three-level condenser (6), the pre-cooled device of gas,
First-stage condenser is again introduced into secondary condenser (2) in the first condensing recovery unit, three-level condenser (19) condensation, until the
The defrosting structure of two condensing recovery units, the high-temperature gas air intake valve into secondary condenser (4) is closed, into forecooler
(10) high-temperature gas air intake valve is again turned on, and is so recycled, and the first condensing recovery unit and the second condensing recovery unit are handed over
For carry out crystallization defrosting operation；.
8. device according to claim 6, it is characterized in that being equipped on the escape pipe of the three-level condenser (19,6)
For detecting the temperature sensor (7,18) of defrosting progress；Temperature is installed on the air inlet pipeline of the first-stage condenser (12)
Sensor (23) to adjust the workloads of first-stage condenser (12) in real time.
9. device according to claim 6, it is characterized in that connection secondary condenser (2,4) and three-level condenser (19,6) pipe
Road is equipped with pressure sensor (20,21), when the pressure of pressure sensor (20,21) is more than setting value, that is, opens connection
High-temperature gas valve on secondary condenser (2,4) and supercharging device gas exhaust piping, the high-temperature gas that supercharging device is discharged are straight
It taps into secondary condenser (2,4), simultaneously closes off the valve that high-temperature gas is directly entered forecooler.
10. device according to claim 6, it is characterized in that three-level condenser be also serially connected with level Four, Pyatyi ... grade condensation
Device；Forecooler (10) and first-stage condenser (12) also concatenated with secondary condenser, three-level condenser to be formed third, the 4th ...
Condensing recovery unit.
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