CN103983087A - Gas trapping method - Google Patents
Gas trapping method Download PDFInfo
- Publication number
- CN103983087A CN103983087A CN201410223586.8A CN201410223586A CN103983087A CN 103983087 A CN103983087 A CN 103983087A CN 201410223586 A CN201410223586 A CN 201410223586A CN 103983087 A CN103983087 A CN 103983087A
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- China
- Prior art keywords
- refrigeration
- trapping
- metal
- trap tube
- temperature
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- 238000001926 trapping method Methods 0.000 title claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012159 carrier gas Substances 0.000 claims description 2
- 238000003795 desorption Methods 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012855 volatile organic compound Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a gas trapping method. The gas trapping method involves a refrigerator and a trapping component; the refrigerator is a commercial refrigerator which is capable of refrigerating to obtain a desired low temperature; the trapping component is connected with the refrigerator; the refrigeration head of the trapping component is refrigerated by the refrigerator and the refrigeration temperature is adjustable and controllable; the outer wall of the refrigeration head of the trapping component is wound with a metal trapping pipe; a temperature sensor probe is mounted on the refrigeration head, and is in contact with the metal trapping pipe and used for measuring the temperature of the metal trapping pipe. Besides, a thermal insulating cover component is mounted outside the trapping component and used for preserving heat of internal components. The gas trapping method is capable of quantitatively trapping and thermally desorbing various polar and nonpolar volatile organic compounds, and also capable of realizing continuous automatic operation; the method is capable of achieving the liquid nitrogen refrigeration effect, and has the advantages of small volume, high refrigeration efficiency and low energy consumption.
Description
Technical field
The present invention relates to a kind of gas trapping method, especially relate to a kind of method that traps atmospheric volatile organic compounds.
Background technology
In atmosphere, the capture method of volatile organic matter has the trapping of adsorption tube room temperature, the trapping of adsorption tube electronic cooling, the trapping of adsorption tube liquid nitrogen (liquid oxygen) refrigeration at present.The effect of electronic cooling is limited, is generally-40 DEG C of left and right; Although liquid nitrogen refrigerating effect is good, refrigeration system more complicated and be subject to the restriction of liquid nitrogen;
In the patent ZL201120347390.1 of Li Hongjie etc., capture method and the device for atmospheric volatile organic compounds described, adopt superposition type compressor refrigeration system, it has avoided the application limitation and the running cost that bring with liquid nitrogen refrigerating to cross high defect, is convenient to promote the use of.
Folding type cooling system has the following advantages: 1) the cylinder ratio Two-stage Compression low temperature Partial shrinkage machine volume of cylinder of cryogenic system compressor is much smaller.This weight, size to minimizing complete machine is favourable.2) in system, keep normal pressure,
Air is difficult for the system of bleeding, and makes stable and safety.3) cascade refrigeration machine not only can combine with different cold-producing mediums, and available different refrigeration modes is combined.
The shortcoming of folding type cooling system is that the equipment such as condenser/evaporator, expansion vessel and polynary cold-producing medium improve the complexity of system.Exist because evaporative condenser has heat transfer temperature difference, in the time that heat transfer temperature difference is excessive, the merit that can make folding type cooling system consume is larger than the system of multi-stage compression unitary system cryogen simultaneously.
Folding type cooling system is applied to volatile organic matter in trapping atmosphere, need to reaches the refrigeration of-150 DEG C, this refrigeration system has the following disadvantages in During Process of Long-term Operation: 1) volume heaviness, and power is large; 2) be down to-150 DEG C of required times from room temperature long; 3) heat shedding to surrounding air is large; 4) interpolation cold-producing medium is loaded down with trivial details; 4) cryogenic temperature of folding type cooling system can only regulate among a small circle.Therefore, need to research and develop the capture method that a kind of volume is little, energy consumption is low, refrigerating efficiency is higher.
Summary of the invention
This method is invented the technical problem that will solve and is to provide a gas trapping method that volume is little, simple in structure, energy consumption is low, refrigerating efficiency is higher.
In order to solve the problems of the technologies described above, the technical scheme of this method invention is:
A kind of gas trapping method, method comprises a refrigeration machine and a round platform refrigeration head member;
Refrigeration machine is commodity refrigeration machines, can freeze to needed low temperature;
Round platform refrigeration head member is connected with refrigeration machine, cooled mechanism cold, and it is controlled that cryogenic temperature is adjustable;
A refrigeration outer wall in round platform refrigeration head member is wound with metal trap tube (1/8 " inert metal trap tube or 0.53mm internal diameter metal capillary trap tube); the two ends that round platform refrigeration head member is provided with positive and negative two electrode slices and metal trap tube (1/8 " inert metal trap tube or 0.53mm internal diameter metal capillary trap tube) are connected, the inlet end contact that can directly be heated to metal trap tube, needed temperature, it is controlled that temperature is adjustable.Round platform refrigeration head member is provided with a temp probe and contacts with metal trap tube, for measuring the temperature of metal trap tube.
Stay-warm case parts of the outside installation of round platform refrigeration head member, for the insulation of interior mark parts.
This capture method tool has the following advantages: 1) capture method device therefor volume is little, lightweight; 2) method heat loss amount is little, and refrigerating efficiency is high; 3) method energy consumption is low; 4) method can fine regulate temperature control as required; 5) method is without carrying out expensive and loaded down with trivial details later maintenance.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present invention,
Detailed description of the invention
Below in conjunction with accompanying drawing and implementing procedure, this method is invented and is described in detail.In figure, in figure: 1. refrigeration machine; 2. trapping parts; 3. stay-warm case; 4. refrigeration head; 5. trap tube; 6. temperature sensor probe.
This gas trapping method comprises a refrigeration machine 1 and a round platform refrigeration head member 2; Refrigeration machine 1 is commodity refrigeration machine, as refrigeration source; Trapping parts 2 are made up of stay-warm case 3, refrigeration 4, metal trap tube 5, temperature sensor probe 6.Metal trap tube 5 uniform winding are on refrigeration 4 outer wall, and temperature sensor probe 6 contacts with metal trap tube 5, freeze 4 to be mounted in stay-warm case parts 3.
The heating of the refrigeration of the refrigeration machine of this gas trapping method and metal trap tube is by Power supply.
The operation principle of gas trapping method is: first by refrigeration machine 1, a refrigeration 2-1 for round platform refrigeration head member 2 is freezed, and then conduct and freeze to being wrapped in metal trap tube on refrigeration head (1/8 " inert metal pipe or 0.53mm internal diameter metal capillary trap tube) 2-2 by heat, the gas trapping that is condensed in metal trap tube 2-2; After gas trapping completes, refrigeration machine 2 stop refrigeration, metal trap tube 2-2 direct-electrifying is carried out to Fast Heating, be condensed trapping gas by thermal desorption after carrier gas purge under enter analytical system analysis.
The present invention includes method design, implementation method and structure composition; be not limited to the variation of temperature, the concrete size of parts and the change of material; the change that all come from structural amendment that the design of technology of the present invention, method and structure done, size, material, all belongs to protection scope of the present invention.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. a gas trapping method, it is characterized in that, concrete steps are: first by refrigeration machine, the refrigeration head of round platform refrigeration head member is freezed, and then metal trap tube conduct contacting with refrigeration by heat freeze, and the gas trapping that is condensed in metal trap tube; After gas trapping completes, refrigeration machine stop refrigeration, metal trap tube direct-electrifying is carried out to Fast Heating, be condensed trapping gas by thermal desorption after carrier gas purge under enter analytical system analysis.
2. round platform refrigeration head member as claimed in claim 1, is characterized in that: round platform refrigeration head member comprises a refrigeration head, metal trap tube, temp probe and stay-warm case.
3. refrigeration head is connected with refrigeration machine as claimed in claim 2, can cooled mechanism cold; It is controlled that temperature is adjustable.
4. refrigeration head can uniform winding metal trap tube as claimed in claim 3, and specification can be 1/8 " metal capillary of inert metal trap tube or 0.53mm internal diameter; Metal trap tube can conduct the needed temperature of freezing by heat by cooled head, and it is controlled that temperature is adjustable.
5. metal trap tube as claimed in claim 4, can be heated rapidly to needed temperature by power supply, and it is controlled that temperature is adjustable.
6. refrigeration head is provided with temp probe as claimed in claim 5, and temp probe contacts with metal capillary, temperature that can Accurate Determining metal tube.
7. refrigeration head is provided with stay-warm case as claimed in claim 6, and refrigeration head and metal trap tube are arranged on stay-warm case inside, and stay-warm case is incubated refrigeration head and metal trap tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223586.8A CN103983087A (en) | 2014-05-23 | 2014-05-23 | Gas trapping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223586.8A CN103983087A (en) | 2014-05-23 | 2014-05-23 | Gas trapping method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103983087A true CN103983087A (en) | 2014-08-13 |
Family
ID=51275154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223586.8A Pending CN103983087A (en) | 2014-05-23 | 2014-05-23 | Gas trapping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103983087A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043846A (en) * | 2015-09-01 | 2015-11-11 | 武汉市天虹仪表有限责任公司 | Volatile organic compound sample gas trapping system and method |
| CN105466756A (en) * | 2015-12-30 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Adsorption heat desorption device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288210A (en) * | 1991-10-30 | 1994-02-22 | General Electric Company | Turbine disk attachment system |
| US20060054805A1 (en) * | 2004-09-13 | 2006-03-16 | Flanagan Michael J | Multi-inlet sampling device for mass spectrometer ion source |
| CN101609074A (en) * | 2009-07-17 | 2009-12-23 | 国家海洋环境监测中心 | Be applicable to the refrigeration-type purge and trap instrument of nitrous oxide |
| CN201464437U (en) * | 2009-07-17 | 2010-05-12 | 国家海洋环境监测中心 | Refrigeration trapping and heating resolver for blowing and trapping nitrogen monoxide |
| CN102980960A (en) * | 2011-09-05 | 2013-03-20 | 核工业北京地质研究院 | Heat purge and trap instrument and heat purge and trap method |
-
2014
- 2014-05-23 CN CN201410223586.8A patent/CN103983087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288210A (en) * | 1991-10-30 | 1994-02-22 | General Electric Company | Turbine disk attachment system |
| US20060054805A1 (en) * | 2004-09-13 | 2006-03-16 | Flanagan Michael J | Multi-inlet sampling device for mass spectrometer ion source |
| CN101609074A (en) * | 2009-07-17 | 2009-12-23 | 国家海洋环境监测中心 | Be applicable to the refrigeration-type purge and trap instrument of nitrous oxide |
| CN201464437U (en) * | 2009-07-17 | 2010-05-12 | 国家海洋环境监测中心 | Refrigeration trapping and heating resolver for blowing and trapping nitrogen monoxide |
| CN102980960A (en) * | 2011-09-05 | 2013-03-20 | 核工业北京地质研究院 | Heat purge and trap instrument and heat purge and trap method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043846A (en) * | 2015-09-01 | 2015-11-11 | 武汉市天虹仪表有限责任公司 | Volatile organic compound sample gas trapping system and method |
| CN105466756A (en) * | 2015-12-30 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Adsorption heat desorption device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140813 |