EP0193795B1 - Verfahren zum Einbringen eines Adsorptionsmittels - Google Patents

Verfahren zum Einbringen eines Adsorptionsmittels Download PDF

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Publication number
EP0193795B1
EP0193795B1 EP86102132A EP86102132A EP0193795B1 EP 0193795 B1 EP0193795 B1 EP 0193795B1 EP 86102132 A EP86102132 A EP 86102132A EP 86102132 A EP86102132 A EP 86102132A EP 0193795 B1 EP0193795 B1 EP 0193795B1
Authority
EP
European Patent Office
Prior art keywords
adsorption agent
vacuum
container
protective envelope
filled
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.)
Expired
Application number
EP86102132A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0193795A3 (en
EP0193795A2 (de
Inventor
Friedel Theissen
Martin Dr. Kesten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of EP0193795A2 publication Critical patent/EP0193795A2/de
Publication of EP0193795A3 publication Critical patent/EP0193795A3/de
Application granted granted Critical
Publication of EP0193795B1 publication Critical patent/EP0193795B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/014—Suspension means
    • F17C2203/018—Suspension means by attachment at the neck
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/901—Liquified gas content, cryogenic

Definitions

  • the invention relates to a method for introducing an adsorbent into the insulation space of vacuum-insulated double-walled containers according to the preamble of claim 1.
  • Containers for the storage of cryogenic liquefied gases must always be provided with complex insulation in order to keep the evaporation of the liquefied gas caused by the heat from the environment low. They are therefore always designed as double-walled containers, an insulation space being formed between the inner and outer containers. The insulation is produced by filling the intermediate space with poorly heat-conducting material, for example with super insulation, and evacuating it after the containers have been completed.
  • adsorption materials have the properties of being able to adsorb large amounts of gas molecules even at low temperatures and thus ensure that, in the operating state, ie when the inner container is cold, the pressure in the insulation space is sufficiently low even after several years of service life of the container.
  • cryocontainer production a problem in cryocontainer production is the high affinity of the adsorbents, in particular molecular sieves, for moisture. They are able to absorb several percent by weight of water from the air, which significantly reduces their adsorption capacity for other gases. For this reason, they are activated before being installed in the containers, which essentially means that they are removed from their adsorbed water. This is done by heating to 100 ° C (activated carbon) or over 300 ° C (molecular sieve) and simultaneously evacuating.
  • the adsorbents are again exposed to the atmospheric air so that they can adsorb water again. Furthermore, the other materials brought into the isolation room are loaded with water molecules, which must be removed by heating and flushing with dry nitrogen after the container has been built. As a result, considerable water vapor partial pressures can occur in the insulation space, which also contributes to the adsorbent being loaded with moisture again. This practically nullifies the previous activation of the adsorbent. The consequence of this is that the heating and evacuation times before the isolation space is closed are significantly lengthened, which causes both increased expenditure of time and enormous additional energy costs.
  • a getter arrangement for vacuum vessels, in particular electron tubes is known, in which these disadvantages are avoided by arranging the getter material in a metallic foil. After the vessel has been heated and degassed, the getter is activated. To do this, the metallic foil is opened by heating it from the outside until it melts. However, this precludes an arrangement of the film containing the getter material directly on the inner container, as is desirable for double-walled containers for storing low-boiling liquefied gases.
  • the invention is therefore based on the object of providing a method for introducing an adsorbent into the insulation space from the vacuum-insulated double-walled containers for storing low-boiling liquefied gases, in which the activated adsorbent can be arranged in a protective film in the insulation space on the inner container and the protective film can be opened, without having to be destroyed by external heat.
  • the patent claim 5 relates to the use of a sealed edge bag made of metallized plastic film as a protective cover for carrying out the method according to one of claims 1 to 4.
  • the adsorbents are activated in gas and moisture-impermeable containers, for. B. sealed edge bags made of metallized plastic films, packaged.
  • the packaging is attached to the inner container at the start of container production and keeps the adsorbent closed. Only during the final evacuation does an overpressure arise in the packaging due to the negative pressure in the insulation space, which leads to the destruction of the packaging and thus to the release of the adsorbent.
  • the adsorbent is packaged at an elevated temperature.
  • the adsorbent is loaded with less Gas than when packaging below room temperature.
  • the packaging container does not burst when the vacuum is generated, but only when the insulation space is at least approximately heated to the temperature at which the adsorbent was packed. It is therefore possible in this case to evacuate the insulation space when the container is cold, for example to carry out a leak detection without the adsorbent being released. Likewise, the insulation can be baked out without creating a vacuum.
  • the packaging temperature should be at least 50 ° C to achieve the described effects.
  • the upper temperature is only limited by the thermal stability of the packaging container and can be several hundred ° C. Since heating is usually carried out at around 100 ° C, the majority of practical applications result in an upper packaging temperature of around 120 ° C.
  • Attaching the containers filled with adsorbent to the inner container is advisable because the lowest temperatures prevail there. In principle, however, the containers can also be attached at other locations.
  • the invention is of course not limited to the use of sealed edge bags. Any container that fulfills the criteria of being gas and watertight and bursting open under vacuum is suitable. So z. B. rigid container with a single opening can be used if the opening is closed with an appropriate film. Such a container can be arranged, for example, in the form of a circular ring around the neck tube of the cryocontainer.
  • the container shown in Figure 1 is a sealed edge bag, which is filled with molecular sieve 1.
  • the material of the sealed edge pouch is an adhesive-laminated composite film made of plastic and metal. Specifically, it consists of a 75 ⁇ thick polypropylene film 2, a 12 ⁇ thick aluminum film 3 and also a 12 ⁇ thick biaxially stretched polyester film 4.
  • the outer dimensions of the sealed edge bag are 10 cm x 20 cm.
  • FIG. 2 shows a cryocontainer, consisting of an inner container 5 and an outer container 6, connected by a neck tube 7. There is superinsulation 8 between the inner container 5 and the outer container 6. According to the invention, an annular adsorbent container 9 with adsorbent 10 is arranged around the neck tube 7. According to the invention, the adsorbent container is closed with an aluminum foil 11 that bursts under vacuum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Packages (AREA)
EP86102132A 1985-03-07 1986-02-19 Verfahren zum Einbringen eines Adsorptionsmittels Expired EP0193795B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3508059 1985-03-07
DE3508059 1985-03-07
DE3600298 1986-01-08
DE19863600298 DE3600298A1 (de) 1985-03-07 1986-01-08 Verfahren zum einbringen eines adsorptionsmittels

Publications (3)

Publication Number Publication Date
EP0193795A2 EP0193795A2 (de) 1986-09-10
EP0193795A3 EP0193795A3 (en) 1986-11-26
EP0193795B1 true EP0193795B1 (de) 1989-06-07

Family

ID=25830077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102132A Expired EP0193795B1 (de) 1985-03-07 1986-02-19 Verfahren zum Einbringen eines Adsorptionsmittels

Country Status (4)

Country Link
US (1) US4704068A (enrdf_load_stackoverflow)
EP (1) EP0193795B1 (enrdf_load_stackoverflow)
JP (1) JPH0684798B2 (enrdf_load_stackoverflow)
DE (1) DE3600298A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500305A (en) * 1990-09-24 1996-03-19 Aladdin Industries, Inc. Vacuum insulated panel and method of making a vacuum insulated panel
US5252408A (en) * 1990-09-24 1993-10-12 Aladdin Industries, Inc. Vacuum insulated panel and method of forming a vacuum insulated panel
FR2697074B1 (fr) * 1992-10-21 1994-12-23 Air Liquide Réservoir cryogénique.
DE10107651A1 (de) * 2001-02-19 2002-08-29 Bsh Bosch Siemens Hausgeraete Verfahren zum Einbringen und Aktivieren eines Getters in einem Vakuumbehälter und Gettereinheit
EP2042064B1 (en) * 2007-09-26 2013-01-02 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Adsorption box for single distillation column within the insulated enclosure
CN103453312A (zh) * 2013-09-11 2013-12-18 张家港韩中深冷科技有限公司 低温罐体的外置式银沸石吸附装置
EP3699476B1 (en) 2017-10-16 2023-11-29 Kawasaki Jukogyo Kabushiki Kaisha Double shell tank and ship
CN113446508B (zh) * 2021-06-16 2023-04-07 西藏友氧健康科技有限公司 用于保温容器的真空层结构及液氧储存容器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE300161C (enrdf_load_stackoverflow) *
US1561101A (en) * 1924-01-28 1925-11-10 Purox Company Liquid-oxygen container
US2100746A (en) * 1935-11-07 1937-11-30 Rca Corp Gettering vacuum tube
NL255383A (enrdf_load_stackoverflow) * 1959-08-31 1900-01-01 Union Carbide Corp
NL301245A (enrdf_load_stackoverflow) * 1962-12-07
US3114469A (en) * 1963-02-20 1963-12-17 Union Carbide Corp Means for improving thermal insulation space
US4272259A (en) * 1976-07-21 1981-06-09 Union Carbide Corporation Gas gettering system
US4394929A (en) * 1981-04-10 1983-07-26 Union Carbide Corporation Cryogenic liquid storage container having an improved access conduit

Also Published As

Publication number Publication date
DE3600298A1 (de) 1986-09-11
JPH0684798B2 (ja) 1994-10-26
DE3600298C2 (enrdf_load_stackoverflow) 1988-06-16
EP0193795A3 (en) 1986-11-26
EP0193795A2 (de) 1986-09-10
US4704068A (en) 1987-11-03
JPS61206900A (ja) 1986-09-13

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