EP3830505A1 - Verfahren zum wiederverwerten von argon - Google Patents
Verfahren zum wiederverwerten von argonInfo
- Publication number
- EP3830505A1 EP3830505A1 EP19731943.7A EP19731943A EP3830505A1 EP 3830505 A1 EP3830505 A1 EP 3830505A1 EP 19731943 A EP19731943 A EP 19731943A EP 3830505 A1 EP3830505 A1 EP 3830505A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- argon
- fed
- cooling medium
- raw
- industrial process
- 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.)
- Withdrawn
Links
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
- F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
-
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/02—Processes or apparatus using separation by rectification in a single pressure main column system
-
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas
-
- 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
-
- 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
- F25J2210/20—H2/N2 mixture, i.e. synthesis gas for or purge gas from ammonia synthesis
-
- 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
-
- 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
- F25J2210/58—Argon
-
- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/04—Recovery of liquid products
-
- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/58—Argon
-
- 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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/30—Compression of the feed stream
-
- 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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/58—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being argon or crude argon
-
- 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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
-
- 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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/904—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by liquid or gaseous cryogen in an open loop
Definitions
- the invention relates to a method for recycling argon according to the preamble of patent claim 1.
- washing and condensation processes are used, in which the loaded gas stream is brought into direct or indirect thermal contact with a cooling medium, the loading substance condensing out.
- Adsorption and chemical sorption processes attach the loading substance to a medium, which is then freed from it by desorption.
- Methods of this type which serve in particular to reduce pollutant emissions or to recover certain ingredients, are known, for example, from EP 0 537 473 A1, EP 0 827 770 A2, EP 1 366 793 A1, or EP 1 602 401 A1.
- EP 0 331 028 B1 describes a process for cleaning crude argon
- Argon is used in a variety of industrial processes, for example in the field of smelting metallurgy. With an argon purge, a freshly produced steel alloy can be degassed and homogenized at the same time, specifically the unwanted, dissolved nitrogen is removed from the melt. Other applications include the use of argon as an inert or Purge gas for heat treatment or in certain processes
- the argon used in such processes is generally stored in a tank at a pressure of, for example, 5 bar to 20 bar in the cryogenic liquefied state and evaporated before it is used.
- the argon which is still present in the tank with a very high level of purity, becomes contaminated with various substances, the boiling points of which are sometimes lower than the boiling point of the argon at the same pressure, such as nitrogen, carbon oxide or hydrogen (such components are hereinafter referred to as "lower boiling substances” ), but sometimes also higher, such as oxygen or organic substances (hereinafter referred to as "higher-boiling substances").
- the argon stream loaded with these substances can then no longer be used in the same industrial process; as a rule, the argon is therefore subsequently released into the atmosphere, which leads to a high consumption of argon.
- the processing and recovery of argon involves a great deal of effort and energy and is therefore currently uneconomical in most cases.
- the invention is therefore based on the object of a method for
- the method according to the invention for recycling argon, which is stored in the liquid state in a tank (hereinafter referred to as “pure argon”), removed from the tank, vaporized and fed to an industrial process in gaseous form, is characterized in that the gaseous argon after its Use in the industrial process (hereinafter referred to as "raw argon”) is compressed in a compressor, the compressed raw argon is fed to a main heat exchanger and there by indirect heat exchange with at least one first cooling medium, preferably cooled to a temperature above the boiling point of argon at the pressure prevailing in the main heat exchanger, the compressed and cooled crude argon is fed to a separating device and there by preferably direct heat exchange with a second cooling medium to a temperature below the boiling point of argon at the in the separating device
- argon argon loaded with low-boiling substances and a liquid phase from argon at least largely freed from lower-boiling substances
- Product argon in the liquid state is withdrawn from a sump of the separating device, expanded and used in the main heat exchanger as a cooling medium for cooling the raw argon and evaporated, the vaporized product argon is at least partially returned to the industrial process, with cooling of the raw argon in the separating device and / or the raw argon is fed to the separator pure argon from the tank and brought into direct or indirect thermal contact with the raw argon.
- the main heat exchanger there is indirect thermal contact of the compressed crude argon with at least one first cooling medium.
- Product argon is used as the first cooling medium; additional ones may be used if necessary
- Cooling media are used, for example pure argon. As a result, the raw argon is cooled to a temperature above or below the
- Boiling point of argon at the one prevailing in the main heat exchanger Raw argon pressure exerted in the main heat exchanger.
- a direct or indirect thermal contact of the raw argon with a second cooling medium takes place in the separating device.
- the second cooling medium is either liquid pure argon, which is fed, for example, into the head space of the separating device and brought into direct contact with the raw argon, and / or a medium that is indirectly cooled with liquid pure argon, for example a partial flow that is in the head space of the separating device accumulating and discharged from this gas phase, which is at least partially liquefied by indirect heat exchange with cold pure argon and into the headspace of the separating device
- the method according to the invention considerably reduces the quantity of fresh pure argon supplied to the industrial plant in which the industrial process is carried out, thereby saving costs to a not inconsiderable extent.
- a “separation device” is to be understood here generally to mean a device which allows the cryogenic separation of the crude argon described into a gas phase laden with lower-boiling substances and a liquid phase which is at least largely freed from lower-boiling substances.
- the separation device is a rectification column or a condenser.
- the pure liquid argon taken from the tank can be fed into the head space of the separation device.
- the pure argon fed in is in direct contact with that in the separating device
- the pure argon thus acts as a "second cooling medium" for cooling the raw argon.
- an additional temperature is required Cooling required.
- the cold content of the product argon is used, for example, which is relaxed and brought into indirect thermal contact with the raw argon. Designs with direct contact between raw argon and pure argon are easy to implement, but are only recommended if no further, higher-boiling constituents can be removed from the argon flow, or if they have already been removed from the raw argon in a previous cleaning stage.
- the cold content of the pure argon is used in that the pure argon enters into indirect heat exchange with the raw argon.
- the pure argon evaporates without taking up contaminants from the raw argon.
- the crude argon can be effectively cooled by the fact that the pure argon is present at a lower pressure than the crude argon during indirect heat exchange.
- Pure argon is stored in the tank at a pressure that is lower from the start than the pressure of the raw argon after it has been compressed (and before it comes into contact with the pure argon), or the pure argon from the tank is expanded to a correspondingly low pressure before the raw argon comes into contact with heat ,
- a preferred embodiment of this type with indirect heat transfer from the crude argon to the pure argon is characterized in that a partial stream of the argon removed from there, which is loaded with lower-boiling substances, is fed from the head space of the separating device to a head condenser, cooled in the latter by indirect heat exchange with a third cooling medium and then again Separator is supplied, with pure argon taken from the tank as the "third cooling medium" in the top condenser. The through the "third
- Cooling medium ”cooled partial flow thus serves as a“ second cooling medium ”for cooling the raw argon in the separation device.
- the top condenser is a heat exchanger which is arranged in the headspace of the separating device in terms of flow technology before the introduction of a medium, here the partial flow of argon loaded with lower-boiling substances.
- Main heat exchanger The pure argon is thus used as the "first cooling medium" in the main heat exchanger for pre-cooling the raw argon.
- cooling medium or several other cooling media can be used in the main heat exchanger or in the top condenser instead of the pure argon or in addition to it for precooling the raw argon and brought into indirect heat exchange with it, for example residual gas withdrawn from the head space of the separating device and / or another cryogenic one Refrigerants, such as liquid nitrogen or liquid oxygen.
- the pure argon is preferred after use as a cooling medium in the
- Head condenser and / or the main heat exchanger fed to the same industrial process in which the product argon is returned.
- at least a partial stream of the pure argon used for this purpose can also be fed to other industrial processes in which particularly pure argon is required.
- This cleaning stage can also be carried out before or after the cleaning stage to remove low-boiling substances.
- all known methods for gas purification can be used according to the invention, for example one cryogenic gas cleaning process in which the higher-boiling substances are condensed out of the argon flow in a preferably indirect heat exchange with a cryogenic cooling medium and then removed.
- pure argon from the tank is preferably used as the cooling medium, but within the scope of the invention it is also possible to use other liquefied gases as cooling medium, such as, for example, liquid nitrogen or liquid oxygen.
- the pure argon used for cooling is sufficient to fully compensate for any argon losses that occur in the course of the industrial process.
- the process according to the invention is suitable for purifying streams of argon which are heavily or weakly laden with low-boiling substances.
- the argon stream to be purified has an argon content between 20 vol.% And less than 99 vol.%, Preferably between 40 vol.% And 90 vol.%, Particularly preferably between 50 vol.% And 85 vol.% , the respective rest at least predominantly consisting of low-boiling components such as nitrogen and / or hydrogen.
- FIGS. 1-3 show schematic views (FIGS. 1-3).
- crude argon 2 is obtained in an industrial process 3 in which the crude argon 2 was previously loaded with lower-boiling and higher-boiling substances.
- Industrial process 3 is, for example, a heat treatment of metallic workpieces in which the raw argon was used as an inert or purge gas.
- the crude argon 2 is compressed in a compressor 4 to a pressure of, for example, 5 bar to 20 bar, passes through a main heat exchanger 5 in countercurrent to several cooling media, it being brought to a temperature which is just above, for example Boiling temperature of the argon at the pressure prevailing in the main heat exchanger 5 on the raw argon side.
- the raw argon 2 is introduced into the bottom area of a cryogenic separation device, which in the exemplary embodiments shown here is a rectification column 6.
- a cryogenic separation device which in the exemplary embodiments shown here is a rectification column 6.
- Rectification column 6 the crude argon 2 is further cooled by thermal contact with a cooling medium and separated into its components, whereby liquid argon (product argon) largely freed from lower boiling substances collects in the sump 7 of the rectification column 6, while part of the argon and
- Pure argon 9 is used to cool the process in the rectification column 6 and is stored in a tank 10 in the liquefied state.
- Pure argon 9 is removed from the tank 10 and, in exemplary embodiment 1, is fed as liquefied gas into the head space 8 of the rectification column 6.
- the low-boiling gas portions accumulating in the head space 8 are discharged together with a smaller amount of argon as residual gas 12.
- a partial stream 13 of the residual gas 12 is fed to a top condenser 14, in which it is liquefied and reintroduced into the top space 8 of the rectification column 6.
- the remaining gas 12 is used as a cooling medium for pre-cooling the raw argon 2 in
- Main heat exchanger 5 used and then released into the ambient atmosphere or possibly used for further use.
- the argon collecting in the sump 7 of the rectification column 6 is discharged as pure, liquefied product argon 15. It goes through
- Top condenser 14 used for cooling the partial flow 13. Finally, it arrives at the main heat exchanger 5, in which it - in addition to the residual gas 12
- Cooling medium for pre-cooling the raw argon 2 is used. Subsequently, the now heated product argon 15 becomes a device 18 for removal
- the device 18 can also be arranged in terms of flow technology in front of the main heat exchanger 5.
- the device 18 can comprise various gas cleaning processes (depending on the type and concentration of the contamination), for example a condenser or several condensers, in which the product argon 15 is cooled in thermal contact with a cooling medium to a temperature at which the higher-boiling substances contained therein condense out.
- the product argon 15 itself remains in the gaseous state during this process.
- the cooling medium used in the device 18 is also, for example, liquid pure argon from the tank 10, which is removed there from a connecting piece 19, or another cooling medium, for example liquid nitrogen.
- raw argon 2 is freed of loading substances from an industrial process 3 and again the industrial one Process 3 fed.
- Embodiment 20 the pure argon 9 from the tank 10 is not introduced into the head space 8 of the rectification column 6, but the pure argon 9 passes through as the cooling medium for indirect heat exchange with the partial flow 13
- Top condenser 14 and evaporates there at least partially. Then it is used as a cooling medium for indirect heat exchange with crude argon 2
- the cold content of the pure argon 9 is therefore used in the embodiment 20 only by indirect heat transfer in the heat exchangers 5 and 14.
- the Pure argon 9 from the tank 10 does not come into direct contact with the raw argon 2. This makes it possible to store the pure argon 9 in the tank 10 at a pressure which is lower than the pressure of the raw argon 2 after its compression, for example at a pressure , which corresponds approximately to the pressure in industrial process 3. If the pure argon 9 is stored in the tank 10 at a higher pressure, for example at a usual tank pressure of 5 bar to 20 bar, it is advisable to relax the pure argon 9 at a relief valve 21 before passing through at least one of the heat exchangers 14, 5 and thus to a lower one
- the pure argon 9 heated in the heat exchangers 5, 14 is, for example, as shown in FIG. 2, fed to the industrial process 3 or mixed with the product argon 15 downstream to the device 18, or it can be used for other purposes.
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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018006002.1A DE102018006002B3 (de) | 2018-07-28 | 2018-07-28 | Verfahren zum Wiederverwerten von Argon |
| PCT/EP2019/065693 WO2020025214A1 (de) | 2018-07-28 | 2019-06-14 | Verfahren zum wiederverwerten von argon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3830505A1 true EP3830505A1 (de) | 2021-06-09 |
Family
ID=66998384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19731943.7A Withdrawn EP3830505A1 (de) | 2018-07-28 | 2019-06-14 | Verfahren zum wiederverwerten von argon |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20210310733A1 (de) |
| EP (1) | EP3830505A1 (de) |
| DE (1) | DE102018006002B3 (de) |
| WO (1) | WO2020025214A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022028732A1 (de) | 2020-08-03 | 2022-02-10 | Linde Gmbh | Verfahren und anlage zur durchführung eines industrieprozesses |
| CN116989532A (zh) * | 2023-06-30 | 2023-11-03 | 上海跃绅能源科技有限公司 | 一种惰性气体保护回收的方法和装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3806523A1 (de) | 1988-03-01 | 1989-09-14 | Linde Ag | Verfahren zur reinigung von rohargon |
| DE4134293C1 (de) | 1991-10-17 | 1993-02-11 | Messer Griesheim Gmbh, 6000 Frankfurt, De | |
| DE19635817A1 (de) | 1996-09-04 | 1998-03-05 | Messer Griesheim Gmbh | Verfahren und Vorrichtung zur Desorption von Adsorbern |
| JPH1183309A (ja) * | 1997-09-04 | 1999-03-26 | Nippon Air Rikiide Kk | アルゴン精製方法及び装置 |
| DE10223845C1 (de) | 2002-05-28 | 2003-10-30 | Messer Griesheim Gmbh | Verfahren und Vorrichtung zur Gasreinigung |
| US6838066B2 (en) * | 2002-09-13 | 2005-01-04 | Air Products And Chemicals, Inc. | Process for recovery, purification, and recycle of argon |
| DE102004026909A1 (de) | 2004-06-01 | 2005-12-29 | Messer Group Gmbh | Verfahren und Vorrichtung zur aerosolarmen Partialkondensation |
| DE102009044249B3 (de) * | 2009-10-14 | 2011-06-30 | ReiCat GmbH, 63571 | Verfahren und Vorrichtung zur Abtrennung von Argon aus einem Gasgemisch |
| DE102011050247B4 (de) * | 2011-05-10 | 2019-02-21 | Reicat Gmbh | Verfahren und Vorrichtung zur Abtrennung von Argon aus einem Gasgemisch |
| WO2015094175A1 (en) * | 2013-12-17 | 2015-06-25 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Purification of inert gases to remove trace impurities |
| CN106288653A (zh) * | 2016-10-21 | 2017-01-04 | 上海跃绅能源科技有限公司 | 一种单塔低温精馏回收氩气的装置及纯化回收氩气的方法 |
| CN106642996A (zh) * | 2016-12-20 | 2017-05-10 | 杭州杭氧股份有限公司 | 一种工艺氩气回收系统中的低温精馏装置及方法 |
-
2018
- 2018-07-28 DE DE102018006002.1A patent/DE102018006002B3/de not_active Expired - Fee Related
-
2019
- 2019-06-14 US US17/263,046 patent/US20210310733A1/en not_active Abandoned
- 2019-06-14 EP EP19731943.7A patent/EP3830505A1/de not_active Withdrawn
- 2019-06-14 WO PCT/EP2019/065693 patent/WO2020025214A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20210310733A1 (en) | 2021-10-07 |
| DE102018006002B3 (de) | 2019-11-07 |
| WO2020025214A1 (de) | 2020-02-06 |
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