CN219674595U - Noncondensable gas recovery unit and space division system - Google Patents
Noncondensable gas recovery unit and space division system Download PDFInfo
- Publication number
- CN219674595U CN219674595U CN202320648313.2U CN202320648313U CN219674595U CN 219674595 U CN219674595 U CN 219674595U CN 202320648313 U CN202320648313 U CN 202320648313U CN 219674595 U CN219674595 U CN 219674595U
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- CN
- China
- Prior art keywords
- heat exchanger
- outlet
- gas
- inlet
- recovery device
- 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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- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 87
- 238000000926 separation method Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 29
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 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
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04642—Recovering noble gases from air
-
- 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
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
-
- 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
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/0489—Modularity and arrangement of parts of the air fractionation unit, in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
-
- 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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/42—Nitrogen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model relates to a noncondensable gas recovery device and an air separation system. The noncondensable gas recovery device comprises a heat exchanger and a separation tank; the heat exchanger is internally provided with a first heat exchange channel and a second heat exchange channel, the two ends of the first heat exchange channel form a first inlet and a first outlet of the heat exchanger, the two ends of the second heat exchange channel form a second inlet and a second outlet of the heat exchanger, the separating tank is provided with an inlet, a gas outlet and a liquid outlet, the first inlet of the heat exchanger is connected with a non-condensable gas discharge port of the air separation device, the first outlet is connected with an inlet of the separating tank, the liquid outlet of the separating tank is connected with the second inlet of the heat exchanger, and the second outlet of the heat exchanger is connected to an exhaust gas discharge position. The air separation system comprises an air separation device with a non-condensable gas discharge port and the non-condensable gas recovery device. The utility model can recycle and separate the noncondensable gas to obtain the neon-helium mixed gas with higher added value, and has better economic benefit.
Description
Technical Field
The utility model relates to a noncondensable gas recovery device and an air separation system based on the noncondensable gas recovery device.
Background
The air contains a small amount of gas such as neon or helium having a low liquefaction temperature. In the production process of the existing air separation device, the gas with low partial melting temperature cannot be completely condensed in the main cooling and needs to be continuously discharged, so that non-condensable gas discharged by the air separation device is formed, and valuable rare gas is wasted.
Disclosure of Invention
The utility model aims to provide a noncondensable gas recycling device for recycling noncondensable gas of an air separation device to obtain neon-helium mixed gas with higher added value, thereby improving economic benefit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a non-condensable gas recovery device connected with a non-condensable gas discharge port of an air separation device, wherein the non-condensable gas recovery device comprises a heat exchanger for cooling and partially liquefying the non-condensable gas to form intermediate gas, and a separation tank for separating the intermediate gas into neon-helium mixed gas and liquid nitrogen; the heat exchanger is internally provided with a first heat exchange channel and a second heat exchange channel, the two ends of the first heat exchange channel form a first inlet and a first outlet of the heat exchanger, the two ends of the second heat exchange channel form a second inlet and a second outlet of the heat exchanger, the separating tank is provided with an inlet, a gas outlet for outputting the neon-helium mixed gas and a liquid outlet for outputting the liquid nitrogen, the first inlet of the heat exchanger is connected with the non-condensable gas discharge port of the air separation device through an air inlet pipeline, the first outlet of the heat exchanger is connected with the inlet of the separation tank through an input pipeline, the gas outlet of the separation tank is connected to a neon helium mixed gas user, the liquid outlet of the separation tank is connected with the second inlet of the heat exchanger through an output pipeline, and the second outlet of the heat exchanger is connected to an exhaust gas discharge position through a discharge pipeline.
The output pipeline is connected with a liquid nitrogen supplementing pipeline for supplementing liquid nitrogen to the output pipeline.
The heat exchanger is internally provided with a third heat exchange channel, and a gas outlet of the separation tank is connected to the neon helium mixed gas user through the third heat exchange channel.
The heat exchanger is a plate-fin heat exchanger.
The heat exchanger and the separating tank are arranged in the cold box.
An input throttle valve is arranged on the input pipeline.
An output throttle valve is arranged on the output pipeline.
And a liquid supplementing throttle valve is arranged on the liquid nitrogen supplementing pipeline.
The utility model also provides an air separation system capable of recycling noncondensable gas and having higher economic benefit, which adopts the scheme that:
an air separation system comprises an air separation device with a non-condensable gas discharge port and the non-condensable gas recovery device.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model can recycle and separate the noncondensable gas to obtain the neon-helium mixed gas with higher added value, and has better economic benefit.
Drawings
FIG. 1 is a schematic view of a noncondensable gas recovery device of the present utility model.
Detailed Description
The utility model will be further described with reference to examples of embodiments shown in the drawings.
Embodiment one: as shown in figure 1, the noncondensable gas recovery device connected with the noncondensable gas discharge port of the air separation device comprises a heat exchanger E1 and a separation tank S1, which are both arranged in a cold box. The heat exchanger E1 is used to cool and partially liquefy the noncondensable gas to form an intermediate gas, and a plate-fin heat exchanger E1 may be used. The separation tank S1 is used to separate the intermediate gas into neon-helium mixture and liquid nitrogen.
At least two heat exchange channels are arranged in the heat exchanger E1, namely a first heat exchange channel and a second heat exchange channel, so that heat exchange is carried out in the heat exchanger E1 by fluid in the first heat exchange channel and fluid in the second heat exchange channel. The two ends of the first heat exchange channel form a first inlet and a first outlet of the heat exchanger E1, and fluid flows into the first heat exchange channel from the first inlet and flows out of the first heat exchange channel from the first outlet. The two ends of the second heat exchange channel form a second inlet and a second outlet of the heat exchanger E1, and fluid flows into the second heat exchange channel from the second inlet and flows out of the second heat exchange channel from the second outlet. The separation tank S1 has an inlet at the middle portion thereof, a gas outlet at the top portion thereof for outputting neon helium mixture, and a liquid outlet at the bottom portion thereof for outputting liquid nitrogen. The first inlet of the heat exchanger E1 is connected with the non-condensable gas discharge port of the air separation device through an air inlet pipeline, the first outlet of the heat exchanger E1 is connected with the inlet of the separation tank S1 through an input pipeline, an input throttle valve is arranged on the input pipeline, the gas outlet of the separation tank S1 is connected to a neon helium mixed gas user, the liquid outlet of the separation tank S1 is connected with the second inlet of the heat exchanger E1 through an output pipeline, an output throttle valve is arranged on the output pipeline, and the second outlet of the heat exchanger E1 is connected to an exhaust gas discharge position through a discharge pipeline.
The noncondensable gas from the air separation device is cooled by the reflux gas in the heat exchanger E1 and partially liquefied, and is fed into the separation tank S1 after being controlled by the input throttle valve. Since the liquefaction temperature of the gas such as neon and helium is low, the non-condensable gas cannot be completely liquefied in the heat exchanger E1, and therefore, the non-liquefied neon-helium mixture is obtained at the top of the separation tank S1, and the liquid nitrogen is obtained at the bottom of the separation tank S1. After being output by the separating tank S1, the neon helium mixed gas can be directly discharged out of the cold box to be sent to users for use. After the liquid nitrogen is throttled and depressurized by an output throttle valve, the liquid nitrogen is heated to normal temperature by non-condensable gas in the heat exchanger E1 and then is discharged as waste gas.
A third heat exchange channel can be further arranged in the heat exchanger E1, so that the gas outlet of the separation tank S1 is connected to the neon helium mixed gas user through the third heat exchange channel. When the amount of the neon helium mixed gas is large, the neon helium mixed gas is reheated in the heat exchanger E1 and then sent out.
The output pipeline is connected with a liquid nitrogen supplementing pipeline for supplementing liquid nitrogen to the output pipeline, and the liquid nitrogen supplementing pipeline is provided with a liquid supplementing throttle valve. The cooling capacity necessary for the operation of the device is provided by the liquid ammonia supplementing pipeline.
The air separation device (comprising a rectifying tower and the like) is connected with the noncondensable gas recovery device to form an air separation system, and the air separation system can recover and separate noncondensable gas generated by an air separation process to obtain neon-helium mixed gas with higher added value, so that the economic benefit is improved.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (9)
1. The utility model provides a noncondensable gas recovery unit is connected with the noncondensable gas discharge port of air separation device, its characterized in that: the noncondensable gas recovery device comprises a heat exchanger for cooling and partially liquefying the noncondensable gas to form intermediate gas, and a separation tank for separating the intermediate gas into neon-helium mixed gas and liquid nitrogen; the heat exchanger is internally provided with a first heat exchange channel and a second heat exchange channel, the two ends of the first heat exchange channel form a first inlet and a first outlet of the heat exchanger, the two ends of the second heat exchange channel form a second inlet and a second outlet of the heat exchanger, the separating tank is provided with an inlet, a gas outlet for outputting the neon-helium mixed gas and a liquid outlet for outputting the liquid nitrogen, the first inlet of the heat exchanger is connected with the non-condensable gas discharge port of the air separation device through an air inlet pipeline, the first outlet of the heat exchanger is connected with the inlet of the separation tank through an input pipeline, the gas outlet of the separation tank is connected to a neon helium mixed gas user, the liquid outlet of the separation tank is connected with the second inlet of the heat exchanger through an output pipeline, and the second outlet of the heat exchanger is connected to an exhaust gas discharge position through a discharge pipeline.
2. The noncondensable gas recovery device according to claim 1 wherein: the output pipeline is connected with a liquid nitrogen supplementing pipeline for supplementing liquid nitrogen to the output pipeline.
3. The noncondensable gas recovery device according to claim 1 wherein: the heat exchanger is internally provided with a third heat exchange channel, and a gas outlet of the separation tank is connected to the neon helium mixed gas user through the third heat exchange channel.
4. The noncondensable gas recovery device according to claim 1 wherein: the heat exchanger is a plate-fin heat exchanger.
5. The noncondensable gas recovery device according to claim 1 wherein: the heat exchanger and the separating tank are arranged in the cold box.
6. The noncondensable gas recovery device according to claim 1 wherein: an input throttle valve is arranged on the input pipeline.
7. The noncondensable gas recovery device according to claim 1 wherein: an output throttle valve is arranged on the output pipeline.
8. The noncondensable gas recovery device according to claim 2 wherein: and a liquid supplementing throttle valve is arranged on the liquid nitrogen supplementing pipeline.
9. An air separation system comprising an air separation plant having a non-condensable gas discharge port, characterized by: the air separation system further comprising a noncondensable gas recovery device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648313.2U CN219674595U (en) | 2023-03-29 | 2023-03-29 | Noncondensable gas recovery unit and space division system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648313.2U CN219674595U (en) | 2023-03-29 | 2023-03-29 | Noncondensable gas recovery unit and space division system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219674595U true CN219674595U (en) | 2023-09-12 |
Family
ID=87899591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320648313.2U Active CN219674595U (en) | 2023-03-29 | 2023-03-29 | Noncondensable gas recovery unit and space division system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219674595U (en) |
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2023
- 2023-03-29 CN CN202320648313.2U patent/CN219674595U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |