CN103575065B - Based on wet helium depth drying and the super water condensate recycling device of Cryo Refrigerator - Google Patents

Based on wet helium depth drying and the super water condensate recycling device of Cryo Refrigerator Download PDF

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Publication number
CN103575065B
CN103575065B CN201210250033.2A CN201210250033A CN103575065B CN 103575065 B CN103575065 B CN 103575065B CN 201210250033 A CN201210250033 A CN 201210250033A CN 103575065 B CN103575065 B CN 103575065B
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condenser
helium
super water
wet
recycling device
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CN103575065A (en
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彭楠
刘立强
熊联友
董斌
陆文海
霍志勇
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Beijing Zhongke Fu Hai Low Temperature Technology Co., Ltd.
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Technical Institute of Physics and Chemistry of CAS
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Abstract

The present invention relates to a kind of depth drying of wet helium based on Cryo Refrigerator and the condensate recycling device of super water of chemical field, this device comprises condenser, Cryo Refrigerator, drainage mechanism and vacuum tank, and described condenser is arranged in described vacuum tank; The super water of condensation separated out by the wet helium of incoming flow after carrying out low-temperature heat exchange with the dry helium of low temperature that refluxes in this condenser within the condenser, then flow through cryogenic refrigeration mechanism cold and become the dry helium of low temperature, the dry helium of this low temperature return condenser again with become the dry helium of normal temperature after the wet helium of incoming flow carries out rewarming heat exchange in this condenser and discharge; In described condenser, the super water of condensation is collected by drainage mechanism.The present invention can carry out depth drying to wet helium, and adopt Cryo Refrigerator to provide low-temperature receiver, without the need to drier or adsorbent, avoid the regular replacing of drier or adsorbent, and condensation super water in anti-locking apparatus and helium are secondary polluted, easy to operate.

Description

Based on wet helium depth drying and the super water condensate recycling device of Cryo Refrigerator
Technical field
The present invention relates to the depth drying of wet helium and the condensate recycling device of super water of chemical field, particularly relate to a kind of wet helium depth drying based on Cryo Refrigerator and super water condensate recycling device.
Background technology
Carry in the system of tritium carrying out purifying to high pressure helium cooling agent, the removal of tritium adopts catalysed oxidation processes, first tritium is oxidized to steam, then with the steam in molecular sieve bed absorption removing helium.When molecular sieve adsorption efficiency is lower, need to carry out activation process to molecular sieve bed.Activation temperature is 623K, adopts helium to go out the super water of molecular sieve bed as carrier gas blow-washing method carrier band.And the super water that helium is taken out of is due to very rare, and there is radioactivity, therefore also need to recycle.
Mostly be physical and chemical adsorption method to gas drying means, the chemical drier often used has the concentrated sulfuric acid, soda lime, solid caustic soda, quick lime, anhydrous calcium chloride, phosphorus pentoxide etc., and physical absorbent has active carbon, molecular sieve, activated alumina etc.These methods all need often to change drier or regeneration process adsorbent, and the degree of drying of these methods does not all reach the requirement of 1ppmv, and Part Methods also can produce secondary pollution to dry gas and be difficult to reclaim the water of removing.
In order to overcome the above problems, invention has been useful improvement.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide one and can carry out depth drying based on Cryo Refrigerator to wet helium, the device of condensation recovery can be carried out simultaneously to the super water of wet helium.
(2) technical scheme
The present invention is achieved by the following technical solutions: a kind of wet helium depth drying based on Cryo Refrigerator and super water condensate recycling device, comprise condenser, Cryo Refrigerator, drainage mechanism and vacuum tank, described condenser is arranged in described vacuum tank; The super water of condensation separated out by the wet helium of incoming flow after carrying out low-temperature heat exchange with the dry helium of low temperature that refluxes in this condenser within the condenser, then flow through cryogenic refrigeration mechanism cold and become the dry helium of low temperature, the dry helium of this low temperature return condenser again with become the dry helium of normal temperature after the wet helium of incoming flow carries out rewarming heat exchange in this condenser and discharge; In described condenser, the super water of condensation is collected by drainage mechanism.
And this device also comprises cold header heat exchanger, described cold header heat exchanger is arranged in described vacuum tank; It is outside that described Cryo Refrigerator is arranged on this vacuum tank, and this Cryo Refrigerator is provided with cold head, and described cold head extends in vacuum tank, and this cold head is connected with described cold header heat exchanger.
Further again, described condenser inside is provided with shell side passageway and pipe wing passage; The dry helium of low temperature that the wet helium of incoming flow refluxes in described shell side passageway and pipe wing passage carries out low-temperature heat exchange, then this wet helium is again by becoming the dry helium of low temperature after described cold header heat exchanger, turns back in the pipe wing passage of described condenser and carries out rewarming heat exchange with the wet helium of incoming flow in the shell side passageway of this condenser.
Particularly, described condenser comprises one-level coil condenser and secondary coil condenser, described one-level coil condenser and secondary coil condenser are respectively equipped with shell side passageway and pipe wing passage, and the shell side passageway on described one-level coil condenser is communicated with the shell side passageway on described secondary coil condenser is corresponding with pipe wing passage with pipe wing passage.
And the outside of described secondary coil condenser is provided with radiation shield.
Further, described drainage mechanism comprises one-level spiral drain, deuterostrophies drainpipe and draining valve; Described one-level spiral drain and deuterostrophies drainpipe are arranged in described vacuum tank, and correspondingly with the bottom of secondary coil condenser with one-level coil condenser are respectively communicated with; Described one-level spiral drain and deuterostrophies drainpipe are separately installed with draining valve.
In addition, described condenser is single-stage GM refrigeration machine.
Further, also comprise air temperature type radiator, it is outside that described air temperature type radiator is arranged on described vacuum tank, and this air temperature type radiator is connected with described condenser; Wet helium, by after the cooling of this air temperature type radiator, enters in described condenser.
Further again, also comprise radiator drain valve, the super water of the bottom condensation of described air temperature type radiator is collected by described radiator drain valve.
In addition, the top of described vacuum tank is provided with the flange for installing and overhauling.
(3) beneficial effect
Compare with product with prior art, the present invention has the following advantages:
1. adopt Cryo Refrigerator to provide low-temperature receiver, without the need to drier or adsorbent, avoid the regular replacing of drier or adsorbent, and condensation super water in anti-locking apparatus and helium are secondary polluted, easy to operate;
2. the temperature of helium can be cooled to 120K-200K, can carry out depth drying to helium, and dry effect is higher than 1ppmv;
3., after completing dry run, be convenient to reclaim completely condensation super water;
4. the structure of this super water condensate recycling device is simple, and space structure is compact.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In accompanying drawing, the component list representated by each label is as follows:
1-air temperature type radiator, 2-one-level coil condenser, 3-secondary coil condenser, 4-cold header heat exchanger, 5-single-stage GM refrigeration machine, 6-radiator drain valve, 7-one-level spiral drain, 8-one-level spiral draining valve, 9-deuterostrophies drainpipe, 10-deuterostrophies draining valve, 11-radiation shield, 12-cylindrical shape vacuum tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
One is as shown in Figure 1 used for wet helium depth drying and super water retracting device, and wet helium depth drying and super water retracting device comprise: air temperature type radiator 1, cylindrical shape vacuum tank 12, single-stage GM refrigeration machine 5, one-level coil condenser 2, secondary coil condenser 3, cold header heat exchanger 4, one-level spiral drain 7, deuterostrophies drainpipe 9 and draining valve.
Cylindrical shape vacuum tank 12 top is provided with single-stage GM refrigeration machine 5, it is inner that described single-stage GM refrigeration machine 5 cold head part stretches into cylindrical shape vacuum tank 12, and with cold header heat exchanger 4 good contact, one-level coil condenser 2 and secondary coil condenser 3 is provided with in cylindrical shape vacuum tank 12, and be respectively divided into two gas passages in one-level coil condenser 2 and secondary coil condenser 3, i.e. shell side passageway and pipe wing passage.The shell side passageway exhaust outlet of described one-level coil condenser 2 is connected with the air inlet of secondary coil condenser 3 shell side passageway, the pipe wing passage exhaust outlet of secondary coil condenser 3 is connected with the pipe wing passage air inlet of one-level coil condenser 2, all be provided with discharge outlet bottom one-level coil condenser 2 and secondary coil condenser 3, be correspondingly connected with the water inlet of deuterostrophies drainpipe 9 with the one-level spiral drain 7 of cylindrical shape vacuum tank 12 inner underside respectively; The delivery port of one-level spiral drain 7 and deuterostrophies drainpipe 9 is provided with in cylindrical shape vacuum tank 12 bottom surface.After cylindrical shape vacuum tank 12 drawn by one-level spiral drain 7 and deuterostrophies drainpipe 9, be connected to one-level spiral draining valve 8 and deuterostrophies draining valve 10 respectively; The shell side passageway exhaust outlet of secondary coil condenser 3 is connected with cold header heat exchanger 4 air inlet, and cold header heat exchanger 4 exhaust outlet is connected with the pipe wing passage air inlet of secondary coil condenser 3; Air temperature type radiator 1 is arranged at the outside of cylindrical shape vacuum tank 12, and the shell side passageway air inlet of the exhaust outlet of air temperature type radiator 1 and one-level coil condenser 2, the bottom of air temperature type radiator 1 is provided with discharge outlet and is connected to radiator drain valve 6.
Described one-level coil condenser 2 and secondary coil condenser 3 spatially adopt concentric close-coupled to arrange, the outer setting of secondary coil condenser 3 has radiation shield 11; Be provided with at described cylindrical shape vacuum tank 12 top and install and maintenance flange.
The method that helium depth drying and super water reclaim is as follows:
Molecular sieve bed dehydration helium tail gas (high warm and humid helium) enters from the top air inlet of air temperature type radiator 1 and cools, the overweight moisture of condensation will be collected in the bottom of air temperature type radiator 1, wet helium after cooled is through the vacuum area of cylindrical shape vacuum tank 12, enter the cold dry helium refluxed in the pipe wing passage in the shell side passageway of one-level coil condenser 2 and one-level coil condenser 2 and carry out heat exchange, along with the reduction of temperature, super water in wet helium divides further precipitation, and is collected in the bottom of one-level coil condenser 2.Cold wet helium after cooled enters the further heat exchange of dry helium of the low temperature that the pipe wing passage in secondary coil condenser 3 shell side passageway and this secondary coil condenser 3 refluxes, and the overwhelming majority is wherein overweight, and precipitation formation frost is condensate in the outside wall surface of the pipeline of secondary coil condenser 3 by moisture.After cooled, cold dry helium enters cold header heat exchanger 4, carry out heat exchange with the cold head of single-stage GM refrigeration machine 5 further and become the dry helium of low temperature, then the cold wet helium of secondary coil condenser 3 pipe wing passage cooling incoming flow is returned, become the wet helium that cold dry helium returns the pipe wing passage cooling incoming flow of one-level coil condenser 2 after rewarming, become the dry helium of room temperature after further rewarming and reach drying purpose.
After drying device continuous operation certain hour, single-stage GM refrigeration machine 5 quits work, overall rewarming is carried out to device, the ice sheet be condensate in air temperature type radiator 1, one-level coil condenser 2 and secondary coil condenser 3 is melted into liquid, collects the super water of condensation in device respectively by the draining valve of its correspondence in the drainpipe bottom described air temperature type radiator 1, one-level coil condenser 2 and secondary coil condenser 3.Specifically, the super water of condensation in one-level coil condenser 2 is collected by one-level spiral drain 7 and one-level spiral draining valve 8; Collected the super water of condensation in secondary coil condenser 3 by deuterostrophies drainpipe 9 and deuterostrophies draining valve 10, collected the super water of condensation in air temperature type radiator 1 by radiator drain valve 6.
In the present embodiment, can be set to by gas flow rate in device: the wet helium of 0.2g/s, inlet temperature/pressure/water content: 623K/0.1MPa/10000ppmv is example.The heat exchange area 3m of air temperature type radiator 1 2, the heat exchange area 1.8m of one-level coil condenser 2 2, the heat exchange area 1.4m of secondary coil condenser 3 2, the heat exchange area of cold header heat exchanger 4 is 0.17m 2, the refrigeration work consumption of single-stage GM refrigeration machine 5 is 160W@120K, and radiator drain valve 6, one-level spiral draining valve 8 and deuterostrophies draining valve 10 are DN6 hand-operated valve, and the permanent vacuum degree in cylindrical shape vacuum tank 12 reaches 10 -4pa, the device of the present embodiment can continuous drying helium 8 hours, and outlet helium reaches outlet temperature/water content :≤323K/1ppmv, can collect super water 760g at every turn.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (10)

1., based on wet helium depth drying and the super water condensate recycling device of Cryo Refrigerator, it is characterized in that, comprise condenser, Cryo Refrigerator, drainage mechanism and vacuum tank, described condenser is arranged in described vacuum tank; The super water of condensation separated out by the wet helium of incoming flow after carrying out low-temperature heat exchange with the dry helium of low temperature that refluxes in this condenser within the condenser, then flow through cryogenic refrigeration mechanism cold and become the dry helium of low temperature, the dry helium of this low temperature return condenser again with become the dry helium of normal temperature after the wet helium of incoming flow carries out rewarming heat exchange in this condenser and discharge; In described condenser, the super water of condensation is collected by drainage mechanism.
2. wet helium depth drying according to claim 1 and super water condensate recycling device, is characterized in that, also comprise cold header heat exchanger, and described cold header heat exchanger is arranged in described vacuum tank; It is outside that described Cryo Refrigerator is arranged on this vacuum tank, and this Cryo Refrigerator is provided with cold head, and described cold head extends in vacuum tank, and this cold head is connected with described cold header heat exchanger.
3. wet helium depth drying according to claim 2 and super water condensate recycling device, is characterized in that, described condenser inside is provided with shell side passageway and pipe wing passage; The dry helium of low temperature that the wet helium of incoming flow refluxes in described shell side passageway and pipe wing passage carries out low-temperature heat exchange, then this wet helium is again by becoming the dry helium of low temperature after described cold header heat exchanger, turns back in the pipe wing passage of described condenser and carries out rewarming heat exchange with the wet helium of incoming flow in the shell side passageway of this condenser.
4. wet helium depth drying according to claim 3 and super water condensate recycling device, it is characterized in that, described condenser comprises one-level coil condenser and secondary coil condenser, described one-level coil condenser and secondary coil condenser are respectively equipped with shell side passageway and pipe wing passage, and the shell side passageway on described one-level coil condenser is communicated with the shell side passageway on described secondary coil condenser is corresponding with pipe wing passage with pipe wing passage.
5. wet helium depth drying according to claim 4 and super water condensate recycling device, is characterized in that, the outside of described secondary coil condenser is provided with radiation shield.
6. wet helium depth drying according to claim 4 and super water condensate recycling device, is characterized in that, described drainage mechanism comprises one-level spiral drain, deuterostrophies drainpipe and draining valve; Described one-level spiral drain and deuterostrophies drainpipe are arranged in described vacuum tank, and correspondingly with the bottom of secondary coil condenser with one-level coil condenser are respectively communicated with; Described one-level spiral drain and deuterostrophies drainpipe are separately installed with draining valve.
7. wet helium depth drying according to claim 1 and super water condensate recycling device, is characterized in that, described condenser is single-stage GM refrigeration machine.
8. wet helium depth drying according to claim 1 and super water condensate recycling device, it is characterized in that, also comprise air temperature type radiator, it is outside that described air temperature type radiator is arranged on described vacuum tank, and this air temperature type radiator is connected with described condenser; Wet helium, by after the cooling of this air temperature type radiator, enters in described condenser.
9. wet helium depth drying according to claim 8 and super water condensate recycling device, is characterized in that, also comprise radiator drain valve, and the super water of the bottom condensation of described air temperature type radiator is collected by described radiator drain valve.
10. wet helium depth drying according to claim 1 and super water condensate recycling device, is characterized in that, the top of described vacuum tank is provided with the flange for installing and overhauling.
CN201210250033.2A 2012-07-18 2012-07-18 Based on wet helium depth drying and the super water condensate recycling device of Cryo Refrigerator Active CN103575065B (en)

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CN108053908A (en) * 2017-11-16 2018-05-18 中国核电工程有限公司 Airborne tritium concentration reduces system in a kind of nuclear power plant's workshop
CN117346391B (en) * 2023-12-04 2024-02-20 万气精仪(苏州)气体设备有限公司 Condenser for GM refrigerator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100933A1 (en) * 1991-01-15 1992-07-16 Achenbach Cryotechnik Gmbh Helium purificn. plant using inert diatomaceous earth adsorber filters - for safer operation in presence of liquid oxygen@ residues
US5291738A (en) * 1992-12-07 1994-03-08 Edwards Engineering Corp. Vapor recovery apparatus and method
CN101757837A (en) * 2008-12-25 2010-06-30 上海神开石油化工装备股份有限公司 Low temperature drying device for gas
CN102564066A (en) * 2012-02-10 2012-07-11 南京柯德超低温技术有限公司 Low-temperature device for separating and purifying gas based on small-sized low-temperature refrigerating machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100933A1 (en) * 1991-01-15 1992-07-16 Achenbach Cryotechnik Gmbh Helium purificn. plant using inert diatomaceous earth adsorber filters - for safer operation in presence of liquid oxygen@ residues
US5291738A (en) * 1992-12-07 1994-03-08 Edwards Engineering Corp. Vapor recovery apparatus and method
CN101757837A (en) * 2008-12-25 2010-06-30 上海神开石油化工装备股份有限公司 Low temperature drying device for gas
CN102564066A (en) * 2012-02-10 2012-07-11 南京柯德超低温技术有限公司 Low-temperature device for separating and purifying gas based on small-sized low-temperature refrigerating machine

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Effective date of registration: 20180116

Address after: Room 7, room 711, seat C, No. 2, 2 South Road, Beijing Academy of Sciences

Patentee after: Beijing Zhongke Fu Hai Low Temperature Technology Co., Ltd.

Address before: 100190 Zhongguancun East Road, Beijing, No. 29, No.

Patentee before: Technical Institute of Physics and Chemistry, CAS