CN108224899A - A kind of device of gas low temperature separation - Google Patents
A kind of device of gas low temperature separation Download PDFInfo
- Publication number
- CN108224899A CN108224899A CN201810037858.3A CN201810037858A CN108224899A CN 108224899 A CN108224899 A CN 108224899A CN 201810037858 A CN201810037858 A CN 201810037858A CN 108224899 A CN108224899 A CN 108224899A
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- China
- Prior art keywords
- gas
- valve
- sample chamber
- low temperature
- variable volume
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Classifications
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- 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
-
- 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
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
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- 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 kind of devices of gas low temperature separation.Above device includes：For providing the low temperature cold head of required temperature for gas, it is connect with above-mentioned low temperature cold head, the variable volume sample chamber for accommodating gas and variable volume, gas is controlled to pass in and out the valve of above-mentioned variable volume sample chamber, it connects the first connecting pipe of above-mentioned valve and the variable volume sample chamber and is connected to the second connecting pipe of the relatively described first connecting pipe other side of above-mentioned valve.The above method includes the following steps：Valve is opened, mixed gas to be separated is entered into variable volume sample chamber by the second connecting pipe, valve and the first connecting pipe being connected with above-mentioned valve；Close valve；Start the low temperature cold head being connect with variable volume sample chamber, and variable volume sample chamber is cooled to required gas liquefaction point temperature below；Variable compression volume sample chamber discharges other gases by valve；Needed for raising the temperature to more than gas liquefaction point；Variable compression volume sample chamber, gas needed for discharge.Device provided by the invention is not only simple in structure, and easy to operate.
Description
Technical field
The present invention relates to gas separation technique field, more particularly to a kind of device of gas low temperature separation.
Background technology
With the continuous development of China's metallurgy, chemical industry, particularly electric power, coal chemical industry, market is to gas fractionation unit
Demand it is increasing.At present, gas separation has supercritical fluid extraction and fractionation technology, gas membrane Seperation Technology, hyper-gravity gas
The advantages of a variety of methods such as body isolation technics, each technology have its own and limitation.
The existing method of cryogenic separation target component gas is generally basede on admixture of gas freezing, mesh from admixture of gas
Mark component condenses and is then isolated from admixture of gas the condensate comprising target component gas.In this method, gas
Body mixture freezing generally using the gas expansion in throttle valve and expanding machine for cost carry out or application refrigerating plant come into
Row.In the scheme of cryogenic gas separation, using same flow heat exchanger and rectifying column as additional ancillary equipment.
For example, in a kind of method disclosed in patent US6182468B1, mechanical work is not done in the cooling including mixture
Mixture expansion, during expansion the partial condensation of mixture, separating mixture or part of it obtain in rectifying column
Liquid and gas product.In this case, implement the cooling of mixture using same flow heat exchanger and freezer unit, and mixture
Then by throttling in valve so as to realize the expansion of mixture.
Gas low temperature separator disclosed above and method are needed using numerous large scale equipments such as rectifying column, exchangers
Or device, it is not only complicated, and operate on there is also it is inconvenient for operation the defects of.
Invention content
An embodiment of the present invention provides a kind of device and method of gas low temperature separation, are not only simple in structure, and operate
It is convenient.
In order to achieve the above-mentioned object of the invention, an embodiment of the present invention provides a kind of gas low temperature separation device, including：
For providing the low temperature cold head of required temperature for gas, it is connect with the low temperature cold head, for accommodating gas and variable volume
Variable volume sample chamber, control gas pass in and out the valve of the variable volume sample chamber, connect the valve and the variable capacity
First connecting pipe of product sample chamber and the second company for being connected to the relatively described first connecting pipe other side of the valve
Take over road.
In a kind of device embodiment of gas low temperature separation provided by the invention, the variable volume sample chamber is elasticity
The cavity or cylinder piston structure of material processing.
In a kind of device embodiment of gas low temperature separation provided by the invention, the low-temperature receiver of the low temperature cold head is refrigeration
Machine or cryogenic media.
In a kind of device embodiment of gas low temperature separation provided by the invention, the valve is ball valve or needle-valve.
In a kind of device embodiment of gas low temperature separation provided by the invention, the valve be in low position or
Person is in ambient temperature position.
In a kind of device embodiment of gas low temperature separation provided by the invention, described device is in vacuum environment.
The device of gas low temperature separation provided by the invention is not only simple in structure, and easy to operate.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the schematic diagram of the device of a kind of gas low temperature separation that an embodiment of the present invention provides；
Fig. 2 is the flow diagram of the method for a kind of gas low temperature separation that an embodiment of the present invention provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments,
Embodiment of the present invention is described further in detail.It should be understood that the specific embodiment described in this specification
Just for the sake of explaining the present invention, it is not intended to limit the present invention.
Refering to Figure 1, the embodiment of the present invention has different liquefaction point and solidification point based on different types of gas,
A kind of device of gas low temperature separation is provided, which includes the low temperature cold head 1 for providing low temperature for gas, with low temperature cold
First 1 connection, the variable volume sample chamber 2 for accommodating gas and variable volume, control gas pass in and out the variable volume sample
The valve 4 of chamber, the first connecting pipe 3 of connecting valve 4 and variable volume sample chamber 2 and is connected to the valve 4 with respect to institute
State the second connecting pipe 5 of 3 other side of the first connecting pipe.
Low temperature cold head 1 is connect with variable volume sample chamber 2, and separation gas is provided for the gas in variable volume sample chamber 2
Required temperature, the low-temperature receiver of the low temperature cold head 1 are refrigeration machine or cryogenic media, such as liquid nitrogen, liquid helium etc..
Variable volume sample chamber 2 for housing and detach gas, the volume of the variable volume sample chamber 2 be it is variable,
Cavity or cylinder piston for elastic material processing.
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 as needed in low position or in ambient temperature position.By adjusting first
The length of connecting pipe 3 can cause valve 4 to be in low position or the length in ambient temperature position, i.e. the first connecting pipe 3
Degree is shorter, then valve 4 is in low position；If the length of the first connecting pipe 3 is longer, valve 4 is in ambient temperature position.
Further, to effectively reduce leakage heat, above device is positioned in vacuum environment.It specifically, can will be whole
A device is positioned in a vacuum cavity, so that device is in vacuum environment.
Fig. 2 and Fig. 1 are please referred to, based on the device of above-mentioned gas cryogenic separation shown in FIG. 1, the embodiment of the present invention also provides
A kind of method of gas low temperature separation, this method comprises the following steps：
S1：Open valve 4, by mixed gas to be separated by the second connecting pipe 5 for being connected with the valve 4,
4 and first connecting pipe 3 of valve enters variable volume sample chamber 2；
For example, using mixed gas to be separated as air, required gas is for nitrogen, above-mentioned air is placed in a container
In (not shown).Valve 4 is first turned on, air is inputted from said vesse in above-mentioned variable volume sample chamber 2, specifically,
Air is flowed by the second connecting pipe 5,4 and first connecting pipe 3 of valve in variable volume sample chamber 2.
S2：Close the valve 4；
Valve 4 is closed, air is placed in variable volume sample chamber 2.
S3：Start the low temperature cold head 1 being connect with the variable volume sample chamber 2, and the variable volume sample chamber 2 is cold
But to required gas liquefaction point temperature below；
Further, the device of above-mentioned gas cryogenic separation is in vacuum environment.
Optionally, after the vacuum degree outside the device of gas low temperature separation meets condition, start the low-temperature receiver of low temperature cold head 1,
The temperature of low temperature cold head 1 is reduced to the liquefaction point 77K of nitrogen hereinafter, such as 70K.
S4：The variable volume sample chamber 2 is compressed, other gases are discharged by the valve 4；
Stablize a period of time, after above-mentioned nitrogen after gaseous state liquefaction is liquid, open valve 4, compression is above-mentioned variable
The volume of volume sample chamber 2 discharges in variable volume sample chamber 2 and compares nitrogen still in gaseous hydrogen, helium and liquefaction point
Other low gases.
S5：Needed for raising the temperature to more than gas liquefaction point；
After discharging other gases other than nitrogen, valve is closed, restores the volume of variable volume sample chamber 2, and is passed through low
Temperature in variable volume sample chamber 2 is controlled the liquefaction point temperatures above in nitrogen, such as 80K by warm cold head 1.
S6：The variable volume sample chamber is compressed, discharges the required gas.
Stablize a period of time, after the above-mentioned nitrogen in liquid condition turns to gas, open valve 4, then second compression can
The volume of capacity sample chamber 2 will pass through the first connecting pipe 3,4 and second connecting pipe of valve, 5 row in gaseous nitrogen
Go out variable volume sample chamber 2, so as to fulfill the purpose of the cryogenic separation nitrogen from air.
The device and method of gas low temperature separation provided in an embodiment of the present invention, it is convenient to realize that gas detaches, and
It is simple in structure.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
According to the announcement and introduction of description above, those skilled in the art in the invention can also be to the above embodiment
Carry out appropriate change and modification.Therefore, the invention is not limited in specific embodiment disclosed and described above, to this hair
Some bright modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although in this specification
Some specific terms are used, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (6)
1. a kind of device of gas low temperature separation, which is characterized in that described device includes：For providing required temperature for gas
Low temperature cold head is connect, the variable volume sample chamber for accommodating gas and variable volume with the low temperature cold head, control gas into
Go out the valve of the variable volume sample chamber, connect the first connecting pipe of the valve and the variable volume sample chamber, with
And it is connected to the second connecting pipe of the relatively described first connecting pipe other side of the valve.
2. the apparatus according to claim 1, which is characterized in that the variable volume sample chamber is the chamber of elastic material processing
Body or cylinder piston structure.
3. the apparatus of claim 2, which is characterized in that the low-temperature receiver of the low temperature cold head is situated between for refrigeration machine or low temperature
Matter.
4. device according to claim 3, which is characterized in that the valve is ball valve or needle-valve.
5. device according to claim 4, which is characterized in that the valve is in low position or in room temperature position
It puts.
6. device according to claim 5, which is characterized in that described device is in vacuum environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037858.3A CN108224899A (en) | 2018-01-16 | 2018-01-16 | A kind of device of gas low temperature separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037858.3A CN108224899A (en) | 2018-01-16 | 2018-01-16 | A kind of device of gas low temperature separation |
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| Publication Number | Publication Date |
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| CN108224899A true CN108224899A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810037858.3A Pending CN108224899A (en) | 2018-01-16 | 2018-01-16 | A kind of device of gas low temperature separation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715950A (en) * | 2019-09-27 | 2020-01-21 | 中国科学院理化技术研究所 | Volume-variable fluid thermophysical property measuring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841437A (en) * | 2016-05-24 | 2016-08-10 | 中国科学院理化技术研究所 | Gas low-temperature separation device and method |
| CN205784229U (en) * | 2016-05-24 | 2016-12-07 | 中国科学院理化技术研究所 | The device that a kind of gas low temperature separates |
-
2018
- 2018-01-16 CN CN201810037858.3A patent/CN108224899A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841437A (en) * | 2016-05-24 | 2016-08-10 | 中国科学院理化技术研究所 | Gas low-temperature separation device and method |
| CN205784229U (en) * | 2016-05-24 | 2016-12-07 | 中国科学院理化技术研究所 | The device that a kind of gas low temperature separates |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715950A (en) * | 2019-09-27 | 2020-01-21 | 中国科学院理化技术研究所 | Volume-variable fluid thermophysical property measuring device |
| CN110715950B (en) * | 2019-09-27 | 2022-11-22 | 中国科学院理化技术研究所 | Volume-variable fluid thermophysical property measuring device |
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