CN202885439U - Extracting device for coarse krypton xenon - Google Patents
Extracting device for coarse krypton xenon Download PDFInfo
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- CN202885439U CN202885439U CN 201220319476 CN201220319476U CN202885439U CN 202885439 U CN202885439 U CN 202885439U CN 201220319476 CN201220319476 CN 201220319476 CN 201220319476 U CN201220319476 U CN 201220319476U CN 202885439 U CN202885439 U CN 202885439U
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Abstract
The utility model relates to an extracting device for coarse krypton xenon. According to he extracting device for the coarse krypton xenon, liquid oxygen are extracted from a plurality of theoretical plates arranged on an upper tower bottom through a liquid oxygen pipeline, the concentration of krypton xenon at the theoretical plate positions is lower than that of a tower bottom, and meanwhile CH4 content is one order of magnitude lower than that of a main condenser evaporator, and therefore the phenomenon that the liquid oxygen product takes krypton xenon away is reduced, and more krypton xenon is enabled to gather in the main condenser evaporator. Meanwhile, a small amount of liquid oxygen material is extracted from the positions and enters a coarse krypton xenon tower through a second liquid oxygen pipeline so as to regulate and control the CH4 content in coarse krypton xenon products. The flexible operation of the coarse krypton xenon tower is achieved, the working condition of a main tower is completely unaffected, the limitations that whether an argon recovery system is arranged on an air separation unit and whether the argon recovery system is put into operation are unnecessary, flow choices for users are greatly favorable, the operation is convenient and easy, and energy is saved.
Description
Technical field
The utility model relates to the air separation field, is specifically related to a kind of extraction element of crude krypton xenon.
Background technology
Krypton and xenon are industrial gasses important in the national economy.At present the demand to Krypton and xenon continues to keep high growth in China and even the world, main cause is that its application is more and more wider, they not only are applied in traditional lighting industry, and particularly the application on building doors and windows, flat panel TV, electronic chip, space, satellite and medical industry emerges in recent years.
Industrial producing krypton xenon has following approach: extract from the byproduct of air-separating plant; From discharge gas in ammonia synthesis, extract; From the fission gas of nuclear reactor, extract.China extracts Krypton and xenon from the byproduct of air-separating plant.Under the normal pressure, the boiling point of krypton is-153.2 ℃, the boiling point of xenon is-109.1 ℃, the boiling point that all is higher than oxygen is-182.97 ℃, thereby in air-separating plant, the krypton xenon at first is enriched in the oxygen-enriched liquid air of lower tower, and then be enriched in the liquid oxygen of tower, because krypton xenon content in constituent of atomsphere is very little, krypton: 1.14 * 10-6, xenon: 0.086 * 10-6.In air separation unit, along with the maximization of air separation unit, the raw material liquid oxygen that extracts the krypton xenon also increases at how much numbers.Therefore from oxygen-enriched liquid air or liquid oxygen, reclaim the krypton xenon and containing huge economic outlook.
According to the tissue characteristic of constituent of atomsphere physical property characteristics and space division technique, extract the krypton xenon or from the oxygen-enriched liquid air of lower tower, or from the liquid oxygen of upper tower, extract.Compression air separation plant device oxygen product is to obtain through the pump pressure contracting by main cold liquid oxygen in the liquid oxygen, because the krypton xenon mainly is present in the liquid oxygen, have so a large amount of krypton xenons and taken away by oxygen product, cause the decline of interior compression process krypton xenon recovery rate and the difficulty of crude krypton xenon extraction process tissue.
There is certain defective in traditional extracting method: producing of crude krypton xenon must be carried out when device is produced argon, then can't not carry out producing of crude krypton xenon if argon column processed does not put into operation; Simultaneously to the supplied materials of crude krypton xenon tower: gas, liquid measure operation control require high; The recovery rate of crude krypton xenon product is not high.In addition, the supplied materials of crude krypton xenon tower is restricted, can only be at the bottom of the upper tower and main cold-draw get the less a small amount of liquid oxygen of krypton xenon content, reduced the extraction of krypton xenon; As the air liquefaction of crude krypton xenon tower thermal source, can not participate in air in a rectifying of lower tower, carry out rectifying and need directly enter Shang Ta, weakened the rectifying potentiality of upper tower, the recovery rate of oxygen nitrogen and argon is reduced.
For improving the recovery rate of interior compression process crude krypton xenon, the flexibility that crude krypton xenon tower puts into operation provides a kind of extraction element of crude krypton xenon, has wide market prospects.
Summary of the invention
For the deficiencies in the prior art, it is a kind of rational in infrastructure simple, convenient to operation that the utility model provides, and extracts the extraction element of flexible crude krypton xenon.
The technical solution of the utility model is such realization: a kind of extraction element of crude krypton xenon, comprise raw air Air, cold insulated cabinet, be arranged on the air cleaner AF of cold insulated cabinet outside, air compressor TC1, chilldown system UF, purification system HXK, supercharger BZ, water cooler WE, decompressor pressurized end B, be arranged on the main heat exchanger E1 of cold insulated cabinet inside, decompressor expanding end ET, liquid oxygen pump OP, subcooler E3, lower tower C1, upper tower C2, main condenser evaporimeter K, crude argon column C3, condenser of crude argon tower K3, crude krypton xenon tower C6, crude krypton xenon tower evaporimeter K6, described air cleaner AF is connected with air compressor TC1, air compressor TC1 is connected with chilldown system UF, chilldown system UF is connected with purification system HXK, purification system HXK crosses main heat exchanger E1 by the first pipeline and is connected with lower tower C1, purification system HXK is connected with supercharger BZ, supercharger BZ crosses main heat exchanger E1 by second pipe and is connected with lower tower C1, supercharger BZ is by the 3rd pipeline overexpansion machine pressurized end B, water cooler WE, main heat exchanger E1, decompressor expanding end ET is connected with lower tower C1, upper tower C2 crosses subcooler E3 by the 4th pipeline, main heat exchanger E1 is connected with extraneous nitrogen gas recovering apparatus, upper tower C2 crosses subcooler E3 by the 5th pipeline, main heat exchanger E1 is connected with extraneous dirty nitrogen gas recovering apparatus, upper tower C2 crosses main heat exchanger E1 by the 6th pipeline and is connected with extraneous Oxygen recovery apparatus, lower tower C1 crosses subcooler E3 by lean solution vacant duct LA and is connected with upper tower C2, lower tower C1 crosses subcooler E3 by oxygen-enriched liquid air pipeline LK and is connected with upper tower C2 by the first oxygen-enriched liquid air pipeline LK1, main condenser evaporimeter K is connected with liquid nitrogen pipes LN, liquid nitrogen pipes LN is connected with the second liquid nitrogen pipes LN2 with the first liquid nitrogen pipes LN1 respectively, the first liquid nitrogen pipes LN1 is connected with lower tower C1, the second liquid nitrogen pipes LN2 crosses subcooler E3 and is connected with upper tower C2, upper tower C2 is connected with liquid oxygen pump OP by liquid oxygen line, liquid oxygen pump OP is connected with the 6th pipeline, upper tower C2 is connected with crude krypton xenon tower C6 by the first liquid oxygen line 1, main condenser evaporimeter K is connected with crude krypton xenon tower C6 by the second liquid oxygen line, crude krypton xenon tower C6 is connected with crude krypton xenon product retracting device, lower tower C1 top is connected with crude krypton xenon tower evaporimeter K6 by the first nitrogen pipeline, main condenser evaporimeter K one side is provided with auxiliary condenser/evaporator K2, the bottom of auxiliary condenser/evaporator K2 is connected with main condenser evaporimeter K bottom, the top of auxiliary condenser/evaporator K2 is connected with main condenser evaporimeter K top, liquid nitrogen pipes LN is connected with auxiliary condenser/evaporator K2 by the 7th pipeline, is provided with valve V20 at the 7th pipeline.
Described valve V20 is electromagnetic valve or manually-operated gate.
The utlity model has following good effect: the utility model product liquid oxygen extracts through liquid oxygen line several theoretical version places at the bottom of the upper tower and extracts out, the concentration of this place's krypton xenon is less at the bottom of than tower, the main cold order of magnitude that also lacked of CH4 content has simultaneously so just reduced the liquid oxygen product and has taken away krypton xenon amount more krypton xenon is able in main cold enrichment; Enter the content that crude krypton xenon tower is regulated CH4 in the control crude krypton xenon product from a small amount of liquid oxygen raw material of this extraction through the second liquid oxygen line simultaneously; Owing to can extract the higher raw material of more krypton xenon concentration from the main condenser evaporimeter, the recovery rate of crude krypton xenon product increases, and has increased by 20% than the first flow process recovery rate; The evaporimeter thermal source of crude krypton xenon tower is from top of tower nitrogen GN1 under the first nitrogen pipeline, does thermal source than air the extraction of upper tower oxygen, nitrogen, argon is increased, and particularly the extraction of argon can improve nearly 2%; By auxiliary condenser/evaporator and valve are set, realized putting into operation flexibly of crude krypton xenon tower, do not affect the king-tower operating mode fully, to air separation unit whether arrange argon producing system and argon producing system whether put into operation more unrestricted; Greatly facilitate user's process selecting, make operation more simple and convenient, saved energy consumption.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of extraction element of crude krypton xenon, comprise raw air Air, cold insulated cabinet 6, be arranged on the air cleaner AF of cold insulated cabinet 6 outsides, air compressor TC1, chilldown system UF, purification system HXK, supercharger BZ, water cooler WE, decompressor pressurized end B, be arranged on the main heat exchanger E1 of cold insulated cabinet 6 inside, decompressor expanding end ET, liquid oxygen pump OP, subcooler E3, lower tower C1, upper tower C2, main condenser evaporimeter K, crude argon column C3, condenser of crude argon tower K3, crude krypton xenon tower C6, crude krypton xenon tower evaporimeter K6, described air cleaner AF is connected with air compressor TC1, air compressor TC1 is connected with chilldown system UF, chilldown system UF is connected with purification system HXK, purification system HXK crosses main heat exchanger E1 by the first pipeline 10 and is connected with lower tower C1, purification system HXK is connected with supercharger BZ, supercharger BZ crosses main heat exchanger E1 by second pipe 11 and is connected with lower tower C1, supercharger BZ is by the 3rd pipeline 12 overexpansion machine pressurized end B, water cooler WE, main heat exchanger E1, decompressor expanding end ET is connected with lower tower C1, upper tower C2 crosses subcooler E3 by the 4th pipeline 7, main heat exchanger E1 is connected with extraneous nitrogen gas recovering apparatus, upper tower C2 crosses subcooler E3 by the 5th pipeline 8, main heat exchanger E1 is connected with extraneous dirty nitrogen gas recovering apparatus, upper tower C2 crosses main heat exchanger E1 by the 6th pipeline 9 and is connected with extraneous Oxygen recovery apparatus, lower tower C1 crosses subcooler E3 by lean solution vacant duct LA and is connected with upper tower C2, lower tower C1 crosses subcooler E3 by oxygen-enriched liquid air pipeline LK and is connected with upper tower C2 by the first oxygen-enriched liquid air pipeline LK1, main condenser evaporimeter K is connected with liquid nitrogen pipes LN, liquid nitrogen pipes LN is connected with the second liquid nitrogen pipes LN2 with the first liquid nitrogen pipes LN1 respectively, the first liquid nitrogen pipes LN1 is connected with lower tower C1, the second liquid nitrogen pipes LN2 crosses subcooler E3 and is connected with upper tower C2, upper tower C2 is connected with liquid oxygen pump OP by liquid oxygen line 4, liquid oxygen pump OP is connected with the 6th pipeline 9, upper tower C2 is connected with crude krypton xenon tower C6 by the first liquid oxygen line 1, main condenser evaporimeter K is connected with crude krypton xenon tower C6 by the second liquid oxygen line 2, crude krypton xenon tower C6 is connected with crude krypton xenon product retracting device 5, lower tower C1 top is connected with crude krypton xenon tower evaporimeter K6 by the first nitrogen pipeline 3, main condenser evaporimeter K one side is provided with auxiliary condenser/evaporator K2, the bottom of auxiliary condenser/evaporator K2 is connected with main condenser evaporimeter K bottom, the top of auxiliary condenser/evaporator K2 is connected with main condenser evaporimeter K top, liquid nitrogen pipes LN is connected with auxiliary condenser/evaporator K2 by the 7th pipeline 13, is provided with valve V20 at the 7th pipeline 13.Described valve V20 is electromagnetic valve or manually-operated gate.
Claims (2)
1. the extraction element of a crude krypton xenon, comprise raw air (Air), cold insulated cabinet (6), be arranged on the outside air cleaner (AF) of cold insulated cabinet (6), air compressor (TC1), chilldown system (UF), purification system (HXK), supercharger (BZ), water cooler (WE), decompressor pressurized end (B), be arranged on the inner main heat exchanger (E1) of cold insulated cabinet (6), decompressor expanding end (ET), liquid oxygen pump (OP), subcooler (E3), lower tower (C1), upper tower (C2), main condenser evaporimeter (K), crude argon column (C3), condenser of crude argon tower (K3), crude krypton xenon tower (C6), crude krypton xenon tower evaporimeter (K6), it is characterized in that: described air cleaner (AF) is connected with air compressor (TC1), air compressor (TC1) is connected with chilldown system (UF), chilldown system (UF) is connected with purification system (HXK), purification system (HXK) is crossed main heat exchanger (E1) by the first pipeline (10) and is connected with lower tower (C1), purification system (HXK) is connected with supercharger (BZ), supercharger (BZ) is crossed main heat exchanger (E1) by second pipe (11) and is connected with lower tower (C1), supercharger (BZ) is by the 3rd pipeline (12) overexpansion machine pressurized end (B), water cooler (WE), main heat exchanger (E1), decompressor expanding end (ET) is connected with lower tower (C1), upper tower (C2) is crossed subcooler (E3) by the 4th pipeline (7), main heat exchanger (E1) is connected with extraneous nitrogen gas recovering apparatus, upper tower (C2) is crossed subcooler (E3) by the 5th pipeline (8), main heat exchanger (E1) is connected with extraneous dirty nitrogen gas recovering apparatus, upper tower (C2) is crossed main heat exchanger (E1) by the 6th pipeline (9) and is connected with extraneous Oxygen recovery apparatus, lower tower (C1) is crossed subcooler (E3) by lean solution vacant duct (LA) and is connected with upper tower (C2), lower tower (C1) is crossed subcooler (E3) by oxygen-enriched liquid air pipeline (LK) and is connected with upper tower (C2) by the first oxygen-enriched liquid air pipeline (LK1), main condenser evaporimeter (K) is connected with liquid nitrogen pipes (LN), liquid nitrogen pipes (LN) is connected with the second liquid nitrogen pipes (LN2) with the first liquid nitrogen pipes (LN1) respectively, the first liquid nitrogen pipes (LN1) is connected with lower tower (C1), the second liquid nitrogen pipes (LN2) is crossed subcooler (E3) and is connected with upper tower (C2), upper tower (C2) is connected with liquid oxygen pump (OP) by liquid oxygen line (4), liquid oxygen pump (OP) is connected with the 6th pipeline (9), upper tower (C2) is connected with crude krypton xenon tower (C6) by the first liquid oxygen line (1), main condenser evaporimeter (K) is connected with crude krypton xenon tower (C6) by the second liquid oxygen line (2), crude krypton xenon tower (C6) is connected with crude krypton xenon product retracting device (5), lower tower (C1) top is connected with crude krypton xenon tower evaporimeter (K6) by the first nitrogen pipeline (3), main condenser evaporimeter (K) side is provided with auxiliary condenser/evaporator (K2), the bottom of auxiliary condenser/evaporator (K2) is connected with main condenser evaporimeter (K) bottom, the top of auxiliary condenser/evaporator (K2) is connected with main condenser evaporimeter (K) top, liquid nitrogen pipes (LN) is connected with auxiliary condenser/evaporator (K2) by the 7th pipeline (13), is provided with valve (V20) at the 7th pipeline (13).
2. the extraction element of crude krypton xenon according to claim 1, it is characterized in that: described valve (V20) is electromagnetic valve or manually-operated gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319476 CN202885439U (en) | 2012-07-04 | 2012-07-04 | Extracting device for coarse krypton xenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319476 CN202885439U (en) | 2012-07-04 | 2012-07-04 | Extracting device for coarse krypton xenon |
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| Publication Number | Publication Date |
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| CN202885439U true CN202885439U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220319476 Expired - Fee Related CN202885439U (en) | 2012-07-04 | 2012-07-04 | Extracting device for coarse krypton xenon |
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| CN (1) | CN202885439U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721262A (en) * | 2012-07-04 | 2012-10-10 | 开封空分集团有限公司 | Crude krypton and xenon extraction system and process for extracting crude krypton and xenon by utilizing same |
| CN105115244A (en) * | 2015-08-10 | 2015-12-02 | 开封空分集团有限公司 | Low-purity oxygen air separating device and method |
-
2012
- 2012-07-04 CN CN 201220319476 patent/CN202885439U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721262A (en) * | 2012-07-04 | 2012-10-10 | 开封空分集团有限公司 | Crude krypton and xenon extraction system and process for extracting crude krypton and xenon by utilizing same |
| CN105115244A (en) * | 2015-08-10 | 2015-12-02 | 开封空分集团有限公司 | Low-purity oxygen air separating device and method |
| CN105115244B (en) * | 2015-08-10 | 2017-06-27 | 开封空分集团有限公司 | The device and method that a kind of low purity oxygen air is separate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20160704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |