CN105841437A - Device and method for low-temperature separation of gas - Google Patents
Device and method for low-temperature separation of gas Download PDFInfo
- Publication number
- CN105841437A CN105841437A CN201610348061.6A CN201610348061A CN105841437A CN 105841437 A CN105841437 A CN 105841437A CN 201610348061 A CN201610348061 A CN 201610348061A CN 105841437 A CN105841437 A CN 105841437A
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- CN
- China
- Prior art keywords
- gas
- valve
- variable volume
- sample chamber
- volume sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000926 separation method Methods 0.000 title abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000003913 materials processing Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 abstract description 73
- 238000001816 cooling Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000013536 elastomeric material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000194 supercritical-fluid extraction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a device and a method for low-temperature separation of gas. The above-mentioned device includes: the low-temperature cold head is used for providing required temperature for gas, the variable volume sample cavity which is connected with the low-temperature cold head and used for containing gas and has variable volume is used for controlling the gas to enter and exit the variable volume sample cavity, the valve is connected with the first connecting pipeline of the variable volume sample cavity, and the second connecting pipeline is connected to the other side of the first connecting pipeline, wherein the second connecting pipeline is opposite to the valve. The method comprises the following steps: opening a valve, and enabling the mixed gas to be separated to enter a variable volume sample cavity through a second connecting pipeline, the valve and a first connecting pipeline which are connected with the valve; closing the valve; starting a low-temperature cold head connected with the variable-volume sample cavity, and cooling the variable-volume sample cavity to a temperature below a required gas liquefaction point; compressing the variable volume sample chamber and exhausting other gases through the valve; raising the temperature above the liquefaction point of the desired gas; the variable volume sample chamber is compressed and the desired gas is vented. The device provided by the invention is simple in structure and convenient to operate.
Description
Technical field
The present invention relates to gas separation technique field, the apparatus and method separated particularly to a kind of gas low temperature.
Background technology
Along with China's metallurgy, chemical industry, the development of electric power, particularly coal chemical industry, market is to gas
The demand of separator is increasing.At present, gas separation has supercritical fluid extraction and fractionation technology, gas
The multiple methods such as membrane separation technique, hypergravity gas separation, every kind of technology have himself advantage and
Limitation.
From admixture of gas, to be generally basede on admixture of gas cold for the existing method of cryogenic separation target component gas
Freeze, target components condenses, and isolates the condensation comprising target component gas subsequently from admixture of gas
Thing.In this method, admixture of gas is freezing general with the gas expansion in choke valve and decompressor as generation
Valency is carried out, or application refrigerating plant is carried out.In the scheme that cryogenic gas separates, use same streaming heat
Interchanger and rectifying column are as additional auxiliary equipment.
Such as, patent US 6182468 B1 disclose a kind of method in, it include mixture cooling,
Do not do the mixture expansion of mechanical power, during expanding the partial condensation of mixture, separate in rectifying column mixed
Compound or one part obtain liquid and gas product.In this case, use same flow heat exchanger and
The cooling of mixture implemented by freezer unit, and mixture then realizes mixing by carrying out throttling in valve
The expansion of thing.
Gas low temperature separator disclosed above and method, need to use rectifying column, interchanger etc. numerous greatly
Type equipment or device, not only structure is complicated, and there is also the defect of inconvenient operation on operating.
Summary of the invention
Embodiments provide the apparatus and method that a kind of gas low temperature separates, be not only simple in structure, and
And it is easy to operate.
In order to realize foregoing invention purpose, embodiments provide the device that a kind of gas low temperature separates,
Comprising: for the low temperature cold head temperature required for gas offer, be connected with described low temperature cold head, be used for holding
Receive the variable volume sample chamber of gas and variable volume, control gas and pass in and out the valve of described variable volume sample chamber
Door, connects described valve and is connected pipeline with the first of described variable volume sample chamber, and be connected to described valve
Door the most described first connects the second connection pipeline of pipeline other side.
In the device embodiment that a kind of gas low temperature of present invention offer separates, described variable volume sample chamber
The cavity processed for elastomeric material, or cylinder piston structure.
In the device embodiment that a kind of gas low temperature of present invention offer separates, the low-temperature receiver of described low temperature cold head
For refrigeration machine, or cryogenic media.
In the device embodiment that a kind of gas low temperature of present invention offer separates, described valve is ball valve, or
Person's needle-valve.
In the device embodiment that a kind of gas low temperature of present invention offer separates, described valve is in low-temperature level
Put, or be in ambient temperature position.
In the device embodiment that a kind of gas low temperature of present invention offer separates, described device is in vacuum ring
In border.
The embodiment of the present invention additionally provides a kind of method that gas low temperature separates, and the method comprises the steps:
Open valve, by mixed gas to be separated by be connected with described valve second be connected pipeline,
Described valve and first connects pipeline and enters variable volume sample chamber；
Close described valve；
Start the low temperature cold head being connected with described variable volume sample chamber, and by cold for described variable volume sample chamber
But to desired gas liquefaction point temperature below；
Compress described variable volume sample chamber, discharge other gas by described valve；
Temperature is increased to more than desired gas liquefaction point；
Compress described variable volume sample chamber, discharge described desired gas.
In the embodiment of the method that a kind of gas low temperature of present invention offer separates, described variable volume sample chamber
The cavity processed for elastomeric material, or cylinder piston structure.
In the embodiment of the method that a kind of gas low temperature of present invention offer separates, the low-temperature receiver of described low temperature cold head
For cold-producing medium, or cryogenic media.
In the embodiment of the method that a kind of gas low temperature provided in the present invention separates, described low temperature cold head, variable
Volume sample chamber and valve are in vacuum environment.
The device that the gas low temperature that the present invention provides separates is not only simple in structure, and easy to operate.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the device that a kind of gas low temperature that an embodiment of the present invention provides separates；
Fig. 2 is the schematic flow sheet of the method that a kind of gas low temperature that an embodiment of the present invention provides separates.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, real with concrete below in conjunction with accompanying drawing
Executing mode, embodiment of the present invention is described further in detail.It should be appreciated that in this specification
The detailed description of the invention described is only used to explain the present invention, is not intended to limit the present invention.
Refer to shown in Fig. 1, the embodiment of the present invention based on different types of gas have different liquefaction points and
Freezing point, it is provided that the device that a kind of gas low temperature separates, this device includes for providing low temperature for gas
Low temperature cold head 1, is connected with low temperature cold head 1, for accommodating the variable volume sample chamber 2 of gas and variable volume,
Control gas and pass in and out the valve 4 of described variable volume sample chamber, connecting valve 4 and variable volume sample chamber 2
First connects pipeline 3, and is connected to described valve 4 the most described first and connects the of pipeline 3 other side
Two connect pipeline 5.
Low temperature cold head 1 is connected with variable volume sample chamber 2, provides for the gas in variable volume sample chamber 2
Separating the temperature needed for gas, the low-temperature receiver of this low temperature cold head 1 is refrigeration machine or cryogenic media, such as liquid nitrogen,
Liquid helium etc..
Variable volume sample chamber 2 is used for housing and separating gas, and the volume of this variable volume sample chamber 2 is can
Becoming, it is the cavity of elastomeric material processing, or cylinder piston.
Valve 4 may be configured as the other kinds of valve such as ball valve or needle-valve according to specific needs.
Further, above-mentioned valve 4 can be in low temperature position as required, or is in ambient temperature position.Pass through
Adjust the length of the first connection pipeline 3, so that valve 4 is in low temperature position, or be in ambient temperature position,
The length of the i.e. first connection pipeline 3 is shorter, then valve 4 is in low temperature position；If first connects pipeline 3
Length is longer, then valve 4 is in ambient temperature position.
Further, for effectively reducing Lou heat, said apparatus is positioned in vacuum environment.Specifically,
Whole device can be positioned in a vacuum cavity, so that device is in vacuum environment.
Referring to Fig. 2 and Fig. 1, device based on the above-mentioned gas cryogenic separation shown in Fig. 1, the present invention implements
Example additionally provides a kind of method that gas low temperature separates, and the method comprises the steps:
S1: open valve 4, second is connected mixed gas to be separated by be connected with described valve 4
Pipeline 5, described valve 4 and the first connection pipeline 3 enter variable volume sample chamber 2；
Such as, with mixed gas to be separated as air, as a example by desired gas is nitrogen, above-mentioned air houses
In a container (not shown).It is first turned on valve 4, air is inputted from said vesse above-mentioned variable capacity
In long-pending sample chamber 2, specifically, air connects pipeline 3 by the second connection pipeline 5, valve 4 and first,
Flow in variable volume sample chamber 2.
S2: close described valve 4；
Close valve 4, air is placed in variable volume sample chamber 2.
S3: start the low temperature cold head 1 being connected with described variable volume sample chamber 2, and described variable volume is tried
Sample chamber 2 is cooled to desired gas liquefaction point temperature below；
Further, the device of above-mentioned gas cryogenic separation is in vacuum environment.
Alternatively, after the vacuum outside the device that gas low temperature separates meets condition, start low temperature cold head 1
Low-temperature receiver, the temperature of low temperature cold head 1 is reduced to below liquefaction point 77K of nitrogen, such as 70K.
S4: compress described variable volume sample chamber 2, discharges other gas by described valve 4；
Stablize a period of time, until above-mentioned nitrogen after gaseous state liquefaction is for liquid, open valve 4, in compression
State the volume of variable volume sample chamber 2, discharge hydrogen, helium still in gaseous state in variable volume sample chamber 2
Other gases that gas and liquefaction point are lower than nitrogen.
S5: temperature is increased to more than desired gas liquefaction point；
After discharging other gases beyond nitrogen, close valve, recover the volume of variable volume sample chamber 2,
And by low temperature cold head 1, the temperature in variable volume sample chamber 2 controlled the liquefaction point temperatures above at nitrogen,
Such as 80K.
S6: compress described variable volume sample chamber, discharge described desired gas.
Stablize a period of time, after the above-mentioned nitrogen being in liquid condition turns to gas, open valve 4, again
The volume of variable compression volume sample chamber 2, will be in the nitrogen of gaseous state by the first connection pipeline 3, valve 4
Connect pipeline 5 with second and discharge variable volume sample chamber 2, thus realize the mesh of cryogenic separation nitrogen from air
's.
The apparatus and method that the gas low temperature that the embodiment of the present invention provides separates, it is convenient to realize gas and separate,
And simple in construction.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
According to announcement and the teaching of description above, those skilled in the art in the invention can also be to above-mentioned reality
The mode of executing carries out suitable change and amendment.Therefore, the invention is not limited in tool disclosed and described above
Some modifications and changes of the present invention be should also be as falling into the protection of the claim of the present invention by body embodiment
In the range of.Although additionally, employ some specific terms in this specification, but these terms are intended merely to
Convenient explanation, does not constitute any restriction to the present invention.
Claims (10)
1. the device that a gas low temperature separates, it is characterised in that described device includes: for carrying for gas
For temperature required low temperature cold head, is connected with described low temperature cold head, be used for accommodating gas and variable volume can
Capacity sample chamber, controls gas and passes in and out the valve of described variable volume sample chamber, connect described valve and institute
State the first connection pipeline of variable volume sample chamber, and be connected to the most described first connecting tube of described valve
Second connection pipeline of road other side.
Device the most according to claim 1, it is characterised in that described variable volume sample chamber is elastic
The cavity of materials processing, or cylinder piston structure.
Device the most according to claim 2, it is characterised in that the low-temperature receiver of described low temperature cold head is refrigeration
Machine, or cryogenic media.
Device the most according to claim 3, it is characterised in that described valve is ball valve, or needle-valve.
Device the most according to claim 4, it is characterised in that described valve is in low temperature position, or
Person is in ambient temperature position.
Device the most according to claim 5, it is characterised in that described device is in vacuum environment.
7. the method that a gas low temperature separates, it is characterised in that comprise the steps:
Open valve, by mixed gas to be separated by be connected with described valve second be connected pipeline,
Described valve and first connects pipeline and enters variable volume sample chamber；
Close described valve；
Start the low temperature cold head being connected with described variable volume sample chamber, and by cold for described variable volume sample chamber
But to desired gas liquefaction point temperature below；
Compress described variable volume sample chamber, discharge other gas by described valve；
Temperature is increased to more than desired gas liquefaction point；
Compress described variable volume sample chamber, discharge described desired gas.
Method the most according to claim 7, it is characterised in that: described variable volume sample chamber is elastic
The cavity of materials processing, or cylinder piston structure.
Method the most according to claim 8, it is characterised in that: the low-temperature receiver of described low temperature cold head is refrigeration
Agent, or cryogenic media.
Method the most according to claim 9, it is characterised in that: described low temperature cold head, variable volume
Sample chamber and valve are in vacuum environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348061.6A CN105841437B (en) | 2016-05-24 | 2016-05-24 | Device and method for low-temperature separation of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348061.6A CN105841437B (en) | 2016-05-24 | 2016-05-24 | Device and method for low-temperature separation of gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105841437A true CN105841437A (en) | 2016-08-10 |
| CN105841437B CN105841437B (en) | 2018-12-14 |
Family
ID=56593230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610348061.6A Active CN105841437B (en) | 2016-05-24 | 2016-05-24 | Device and method for low-temperature separation of gas |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224899A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of device of gas low temperature separation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841732A (en) * | 1987-12-28 | 1989-06-27 | Sarcia Domenico S | System and apparatus for producing and storing liquid gases |
| CN101625191B (en) * | 2009-08-10 | 2011-01-05 | 中国科学院理化技术研究所 | Gas low-temperature liquefaction separation system applying segregation separation effect |
| JP6109825B2 (en) * | 2011-07-14 | 2017-04-05 | カンタム デザイン インターナショナル，インコーポレイテッドＱｕａｎｔｕｍ Ｄｅｓｉｇｎ Ｉｎｔｅｒｎａｔｉｏｎａｌ，Ｉｎｃ． | Liquefaction apparatus with pressure controlled liquefaction chamber |
| CN104534811B (en) * | 2014-12-26 | 2016-07-13 | 宁波健信核磁技术有限公司 | Liquid cryogenic fluid device for making |
| CN205784229U (en) * | 2016-05-24 | 2016-12-07 | 中国科学院理化技术研究所 | Gas low-temperature separation device |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224899A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of device of gas low temperature separation |
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| Publication number | Publication date |
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| CN105841437B (en) | 2018-12-14 |
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