CN211782275U - Rectification system for preparing high-purity liquid argon - Google Patents
Rectification system for preparing high-purity liquid argon Download PDFInfo
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- CN211782275U CN211782275U CN202020423685.1U CN202020423685U CN211782275U CN 211782275 U CN211782275 U CN 211782275U CN 202020423685 U CN202020423685 U CN 202020423685U CN 211782275 U CN211782275 U CN 211782275U
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- argon
- tower
- liquid
- crude
- condenser
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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
- F25J3/04406—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 using a dual pressure main column system
- F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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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
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
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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
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
- F25J3/04727—Producing pure argon, e.g. recovered from a crude argon column using an auxiliary pure argon column for nitrogen rejection
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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
- F25J3/04763—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
- F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
- F25J3/04927—Liquid or gas distribution devices
Abstract
The utility model relates to a rectification system for preparing high-purity liquid argon, which comprises an air separation rectification tower and a cold box, the device comprises a crude argon I tower, a crude argon II tower and a fine argon tower, wherein the top of the crude argon II tower is provided with a condenser A, the top of the fine argon tower is provided with a condenser B, the bottom of the fine argon tower is provided with an evaporator, an upper tower is connected with the bottom of the crude argon I tower, the top of the crude argon I tower is connected with the bottom of the crude argon II tower, the bottom of the crude argon II tower is connected with the crude argon I tower through a liquid argon pump, the bottom of the crude argon I tower is connected with an upper tower, the condenser A is connected with the lower part of the fine argon tower, the top of a lower tower is connected with the evaporator, the evaporator is connected with the condenser B, the top of the lower tower is provided with a liquid nitrogen conveying pipe, the liquid nitrogen conveying pipe penetrates through a cold box and then is connected with the condenser B, liquid nitrogen condenses argon in the condenser; the utility model improves the preparation efficiency of the pure liquid argon and the yield of the pure liquid argon.
Description
Technical Field
The utility model relates to the technical field of air separation, in particular to a rectification system for preparing high-purity liquid argon.
Background
Argon is a byproduct of air separation, but high purity argon is widely used in industry. The material is quite inactive, so that the material can be applied to the industries of aircraft manufacturing, shipbuilding, atomic energy industry, mechanical industry and the like, and can also be used as shielding gas of welding and electronic industry, filling gas of lamps and lanterns and the like.
Disclosure of Invention
The utility model aims at providing a rectification system for preparing high-purity liquid argon in order to improve the preparation efficiency, purity and productivity of the liquid argon.
The utility model has the following concrete scheme: a rectifying system for preparing high-purity liquid argon comprises an air separation rectifying tower, a cold box, a crude argon I tower, a crude argon II tower and a fine argon tower, wherein a condenser A is arranged at the top of the crude argon II tower, a condenser B is arranged at the top of the fine argon tower, an evaporator is arranged at the bottom of the fine argon tower, the air separation rectifying tower consists of an upper tower and a lower tower, the upper tower is connected with the bottom of the crude argon I tower to input argon fraction air into the crude argon I tower, the top of the crude argon I tower is connected with the bottom of the crude argon II tower, the bottom of the crude argon II tower is connected with the top of the crude argon I tower through a liquid argon pump to input reflux liquid argon into the crude argon I tower, the bottom of the crude argon I tower is connected with the upper tower to input reflux liquid into the upper tower, the condenser A is connected with the lower part of the fine argon tower to input crude liquid argon into the fine argon tower, the top of the lower tower is connected with the evaporator to input nitrogen as a heat source into the evaporator, and, the top of the lower tower is equipped with the liquid nitrogen conveyer pipe, and the liquid nitrogen conveyer pipe passes be connected with condenser B behind the cold box, and the liquid nitrogen flows to smart argon column bottom for liquid argon with the argon condensation in the condenser B, and smart argon column bottom is equipped with the tapping pipe and is used for discharging pure liquid argon, is equipped with the tapping valve on the tapping pipe.
The smart argon tower includes the tower body, and the tower body top is equipped with the gas outlet, and tower body upper end lateral wall is equipped with the liquid nitrogen import, is equipped with the liquid distributor with liquid nitrogen access connection in the tower body, and at least two-layer packing layer is equipped with to the liquid distributor below, is equipped with a liquid distributor between every two-layer packing layer, and all liquid distributors communicate mutually, and tower body lower extreme lateral wall is equipped with the import of thick argon, and the tower body bottom is equipped with the liquid argon export.
The bottom of every layer of packing layer is equipped with the backup pad, and the top is equipped with the apron.
The tower body bottom is equipped with the conical tube.
The liquid distributor comprises a central pipe, the bottom of the central pipe is provided with a disc, and the disc is evenly provided with a plurality of liquid leakage holes.
The working principle of the utility model is as follows: pumping argon fraction gas with proper argon content from the upper tower, sending the argon fraction gas into a crude argon I tower, discharging crude argon from the top of the crude argon I tower, introducing the crude argon from the bottom of the crude argon II tower, pressurizing crude liquid argon discharged from the bottom of the crude argon II tower by a liquid argon pump, and then feeding the crude liquid argon into the top of the crude argon I tower to serve as reflux liquid; the condenser A of the crude argon II tower adopts supercooled liquid air as a cold source, most of rising gas of the crude argon II tower is condensed in the condenser A, liquid returns to the crude argon II tower to be used as reflux liquid, the rest of the crude liquid argon enters the fine argon tower to be continuously rectified, the condensing side of the evaporator utilizes nitrogen input by the lower tower to be used as a heat source, so that the liquid argon at the bottom of the fine argon tower is evaporated to be rising vapor, and the nitrogen is condensed into liquid nitrogen to be input into the condenser B; condenser B utilizes the subcooling liquid nitrogen as the cold source, cools off the argon vapour at smart argon column top, makes smart argon column top produce the rectification of reflux in order to guarantee the tower to realize the argon nitrogen separation, finally obtain pure liquid argon bottom smart argon column, condenser B produces pure nitrogen gas simultaneously.
The utility model discloses following beneficial effect has: the reasonable rectification system is arranged, so that the preparation efficiency of the pure liquid argon is improved, and the yield of the pure argon is higher; the design of the multilayer liquid distributor and the filler of the fine argon tower improves the contact degree of liquid nitrogen and argon gas, and further improves the yield of pure liquid argon.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
FIG. 2 is a schematic structural view of the argon refining column of the present invention;
FIG. 3 is a view A-A of FIG. 2;
in the figure: 1-lower tower, 2-cold box, 3-upper tower, 4-crude argon I tower, 5-condenser A, 6-crude argon II tower, 7-liquid argon pump, 8-evaporator, 9-fine argon tower, 91-gas outlet, 92-liquid nitrogen inlet, 93-liquid distributor, 931-disc, 932-central pipe, 933-liquid leakage hole, 94-cover plate, 95-support plate, 96-packing layer, 97-crude argon inlet, 98-liquid argon outlet and 10-condenser B.
Detailed Description
Referring to fig. 1, the present embodiment includes an air separation rectifying column, a cold box 2, a crude argon I column 4, a crude argon II column 6 and a refined argon column 9, the top of the crude argon II column 6 is provided with a condenser a5, the top of the refined argon column 9 is provided with a condenser B10, the bottom of the refined argon column 9 is provided with an evaporator 8, the air separation rectifying column is composed of an upper column 3 and a lower column 1, the upper column 3 is connected with the bottom of the crude argon I column 4 to input argon fraction air into the crude argon I column 4, the top of the crude argon I column 4 is connected with the bottom of the crude argon I column 6, the bottom of the crude argon II column 6 is connected with the top of the crude argon I column 4 through a liquid argon pump 7 to input reflux liquid argon into the crude argon I column 4, the bottom of the crude argon I column 4 is connected with the upper column 3 to input reflux liquid into the upper column 3, the condenser a5 is connected with the lower portion of the refined argon column 9 to input crude argon into the refined argon column 9, the top of the lower column 1, evaporimeter 8 is connected the messenger and is got into condenser B10 by the argon gas of nitrogen gas heating evaporation with condenser B10, 1 top of lower tower is equipped with the liquid nitrogen conveyer pipe, and the liquid nitrogen conveyer pipe passes be connected with condenser B10 behind the cold box 2, and the liquid nitrogen flows to smart argon tower 9 bottoms for liquid argon with the argon condensation in the condenser B10, and smart argon tower 9 bottoms is equipped with the casting tube and is used for discharging pure liquid argon, is equipped with the tapping valve on the casting tube.
Referring to fig. 2-3, the fine argon tower 9 according to this embodiment includes a tower body, an air outlet 91 is formed in the top of the tower body, a liquid nitrogen inlet 92 is formed in the side wall of the upper end of the tower body, a liquid distributor 93 connected to the liquid nitrogen inlet 92 is disposed in the tower body, two layers of packing layers 96 are disposed below the liquid distributor 93, another liquid distributor 93 is disposed between the two layers of packing layers 96, the two liquid distributors 93 are communicated with each other, a coarse argon inlet 97 is formed in the side wall of the lower end of the tower body, and a liquid.
In this embodiment, each packing layer 96 is provided with a support plate 95 at the bottom and a cover plate 94 at the top.
In this embodiment, the tower body bottom is equipped with the conical tube.
The liquid distributor 93 described in this embodiment includes a central tube 932, a disk 931 is disposed at the bottom of the central tube 932, and a plurality of liquid leaking holes 933 are uniformly distributed on the disk 931.
Claims (5)
1. The utility model provides a rectifying system for preparing high-purity liquid argon, includes empty rectifying column, cold box, thick argon I tower, thick argon II tower and smart argon tower of dividing, and thick argon II top of the tower portion is equipped with condenser A, and smart argon tower top is equipped with condenser B, and smart argon tower bottom is equipped with the evaporimeter, and empty rectifying column comprises last tower and lower tower, characterized by: the upper tower is connected with the bottom of the crude argon I tower to input argon fraction air into the crude argon I tower, the top of the crude argon I tower is connected with the bottom of the crude argon II tower, the bottom of the crude argon II tower is connected with the top of the crude argon I tower through a liquid argon pump to input reflux liquid argon into the crude argon I tower, the bottom of the crude argon I tower is connected with the upper tower to input reflux liquid argon into the upper tower, the condenser A is connected with the lower part of the fine argon tower to input the crude liquid argon into the fine argon tower, the top of the lower tower is connected with an evaporator at the bottom of the fine argon tower, nitrogen is input into the evaporator as a heat source, the evaporator is connected with a condenser B, so that the argon heated and evaporated by the nitrogen enters the condenser B, the top of the lower tower is equipped with the liquid nitrogen conveyer pipe, and the liquid nitrogen conveyer pipe passes be connected with condenser B behind the cold box, and the liquid nitrogen flows to smart argon column bottom for liquid argon with the argon condensation in the condenser B, and smart argon column bottom is equipped with the tapping pipe and is used for discharging pure liquid argon, is equipped with the tapping valve on the tapping pipe.
2. A rectification system for producing high purity liquid argon as claimed in claim 1 wherein: the fine argon tower comprises a tower body, a gas outlet is formed in the top of the tower body, a liquid nitrogen inlet is formed in the side wall of the upper end of the tower body, a liquid distributor connected with the liquid nitrogen inlet is arranged in the tower body, at least two layers of packing layers are arranged below the liquid distributor, a liquid distributor is arranged between every two layers of packing layers and communicated with each other, a coarse argon inlet is formed in the side wall of the lower end of the tower body, and a liquid argon outlet is formed in the bottom of the.
3. A rectification system for producing high purity liquid argon as claimed in claim 2 wherein: the bottom of each layer of packing layer is provided with a supporting plate, and the top of each layer of packing layer is provided with a cover plate.
4. A rectification system for producing high purity liquid argon as claimed in claim 2 wherein: the bottom of the tower body is provided with a conical pipe.
5. A rectification system for producing high purity liquid argon as claimed in claim 2 wherein: the liquid distributor comprises a central pipe, a disc is arranged at the bottom of the central pipe, and a plurality of liquid leakage holes are uniformly distributed in the disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020423685.1U CN211782275U (en) | 2020-03-30 | 2020-03-30 | Rectification system for preparing high-purity liquid argon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020423685.1U CN211782275U (en) | 2020-03-30 | 2020-03-30 | Rectification system for preparing high-purity liquid argon |
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| Publication Number | Publication Date |
|---|---|
| CN211782275U true CN211782275U (en) | 2020-10-27 |
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| CN202020423685.1U Active CN211782275U (en) | 2020-03-30 | 2020-03-30 | Rectification system for preparing high-purity liquid argon |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063263A (en) * | 2021-04-29 | 2021-07-02 | 开封迪尔空分实业有限公司 | Air separation method for preparing liquid oxygen by using liquid nitrogen |
| CN113091401A (en) * | 2021-04-29 | 2021-07-09 | 开封迪尔空分实业有限公司 | Liquid air separation device for preparing liquid oxygen by using liquid nitrogen |
| CN113091402A (en) * | 2021-04-30 | 2021-07-09 | 开封迪尔空分实业有限公司 | Argon making system with single tower |
-
2020
- 2020-03-30 CN CN202020423685.1U patent/CN211782275U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063263A (en) * | 2021-04-29 | 2021-07-02 | 开封迪尔空分实业有限公司 | Air separation method for preparing liquid oxygen by using liquid nitrogen |
| CN113091401A (en) * | 2021-04-29 | 2021-07-09 | 开封迪尔空分实业有限公司 | Liquid air separation device for preparing liquid oxygen by using liquid nitrogen |
| CN113091401B (en) * | 2021-04-29 | 2022-05-31 | 开封迪尔空分实业有限公司 | Liquid air separation device for preparing liquid oxygen by using liquid nitrogen |
| CN113091402A (en) * | 2021-04-30 | 2021-07-09 | 开封迪尔空分实业有限公司 | Argon making system with single tower |
| CN113091402B (en) * | 2021-04-30 | 2022-02-18 | 开封迪尔空分实业有限公司 | Argon making system with single tower |
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