AT135115B - Process for utilizing the low-pressure, waste or residual gases that arise when filling and transferring low-boiling, liquefied gases. - Google Patents

Process for utilizing the low-pressure, waste or residual gases that arise when filling and transferring low-boiling, liquefied gases.

Info

Publication number
AT135115B
AT135115B AT135115DA AT135115B AT 135115 B AT135115 B AT 135115B AT 135115D A AT135115D A AT 135115DA AT 135115 B AT135115 B AT 135115B
Authority
AT
Austria
Prior art keywords
pressure
low
gases
filling
boiling
Prior art date
Application number
Other languages
German (de)
Inventor
H C C W Paul Dr Heylandt
Original Assignee
Industriegasverwertung Mbhg
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 Industriegasverwertung Mbhg filed Critical Industriegasverwertung Mbhg
Application granted granted Critical
Publication of AT135115B publication Critical patent/AT135115B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C9/00Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0109Shape cylindrical with exteriorly curved end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0119Shape cylindrical with flat end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03Orientation
    • F17C2201/032Orientation with substantially vertical main axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0636Metals
    • F17C2203/0639Steels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01Mounting arrangements
    • F17C2205/0123Mounting arrangements characterised by number of vessels
    • F17C2205/013Two or more vessels
    • F17C2205/0134Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0142Two or more vessels characterised by the presence of fluid connection between vessels bundled in parallel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/011Oxygen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/012Hydrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/014Nitrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/033Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107Single phase
    • F17C2225/0123Single phase gaseous, e.g. CNG, GNC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/036Very high pressure, i.e. above 80 bars
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01Propulsion of the fluid
    • F17C2227/0128Propulsion of the fluid with pumps or compressors
    • F17C2227/0135Pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01Propulsion of the fluid
    • F17C2227/0128Propulsion of the fluid with pumps or compressors
    • F17C2227/0157Compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0367Localisation of heat exchange
    • F17C2227/0388Localisation of heat exchange separate
    • F17C2227/0393Localisation of heat exchange separate using a vaporiser
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2250/00Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06Controlling or regulating of parameters as output values
    • F17C2250/0605Parameters
    • F17C2250/0626Pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2250/00Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06Controlling or regulating of parameters as output values
    • F17C2250/0605Parameters
    • F17C2250/0636Flow or movement of content
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/32Hydrogen storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Gegenstand der Erfindung ist ein Verfahren zum Nutzbarmachen der beim Ab-und Umfüllen tiefsiedender, verflüssigter Gase entstehenden Niederdruck-, Verlust-oder Restgase, bei dem die Gasmengen, die nicht durch Selbstkompression in geschlossenen Druckgefässen auf den gewiinsehten Arbeitsdruck übergeführt werden zwecks Verhütung von Verlusten, mit Hilfe mechanischer Kompression, beispielsweise durch Kompressoren auf den Betriebsdruck gebracht werden. 



   Ausserdem ist der Gegenstand der Erfindung dadurch gekennzeichnet, dass die während der Gasverbrauchspausen in den   Flüssigkeitsbehältern   sich entwickelnden,   unzulässigen'Überdrücke   erzeugende
Gasmengen   bei Überschreitung   eines hinsichtlich des   Flüssigkeitsbehälters   bestimmten zulässigen Druckes mit Hilfe mechanischer Kompressionsmittel auf hohe Drücke gebracht und in Hochdruckgas-Auf-   speicherungsbehälter übergeführt w erden.   



   Für industrielle Zwecke benutzte,   tiefsiedende,   verflüssigte, Gase wie Sauerstoff, Stickstoff, Wasserstoff, Methan od. dgl., werden nach gebräuchlichem Verfahren am Erzeugungsorte in Stahlflasehen komprimiert und den davon entfernt liegenden   Verbrauchsstellen   zugeführt oder auch in Rohrleitungen dorthin geleitet. Beide Arten der Versorgung erfordern grosse Anlagekapitalien, sei es hinsichtlich des Stahltlaschenmaterials, sei es in bezug auf die zu verlegenden Rohrleitungen. Die Stahltlasche mit durchschnittlich 75 kg Gewicht kann beispielsweise nur 0.5 kg Wasserstoff, 8 leg Sauerstoff aufnehmen. Ähnlich sind die Bedingungen des Versandes anderer solcher Gase.

   Günstiger gestalten sich die Verhältnisse, wenn man die Gase, wie ebenfalls bereits bekannt, vorher verflüssigt und sie im   flüssigen Zustand   transportiert und dann am Verbrauchsort in geeigneten Vorrichtungen durch Selbstkompression auf den gewünschten Druck, unter   Umständen   bis 150 at und mehr, verdichtet. 



   Darin begegnet man jedoch insofern Schwierigkeiten, als beim Überführen des verflüssigten Gases aus dem Transportbehälter in den Hoehdruckvergaser stets gewisse   Umfüllverluste   auftreten. Nach der vorliegenden Erfindung werden alle Verdampfungsverluste während der Umfüllperiode und im Betriebe mittels mechanischer Kompression (Kompressoren) restlos nieder nutzbar gemacht. 



   Während man das verflüssigte Gas direkt von einem   Niederdruektank   am Verbrauehsort in einen 
 EMI1.2 
 Kompressionsarbeit auf einen derartig hohen Druck gebracht, wie er durch Selbstkompression aus praktischen Gründen schwer zu erreichen ist. 



   Dadurch können verflüssigte Gase auch für längere Zeit völlig verlustlos aufbewahrt werden, weil in den Zeiten des Nichtverbrauehes die entstehenden Verdampfungsprodukte immer wieder mit mechanischen   Kompressionsmitteln   in entsprechende   Druckbehälter   an der Verbrauchsstelle gebracht werden und ein Entweichen von Gas ins Freie vermieden wird. Der Leistungsaufwand für einen solchen Kompressor, welcher dann Gas von etwa 75 atü auf 150 atü zu drücken hat, ist sehr gering. In diesem Falle steht der Kompressor am   Verbrauehsort.   



   In der beiliegenden Zeichnung ist eine Ausführungsform des Verfahrens schematisch dargestellt. 



  1 ist der die Flüssigkeit enthaltende Tank auf einem Transportwagen. 2 ist ein auf dem Fahrzeug angebrachter Kompressor, der beispielsweise durch den Wagenmotor angetrieben wird. Gelegentlich der Belieferung eines Verbrauchers mit verflüssigtem Sauerstoff enthalte der an der Verbrauchsstelle befind- 

 <Desc/Clms Page number 2> 

 liehe Vergaser 11 noch eine Restmenge an Gas von zirka 6 at Druck, die nicht weiter herab verbraucht m erden kann. Diese Restmenge wird durch eine zeitweilig kuppelbare Rohrleitung 3 durch das Ventil 5 entnommen, während Ventil 6 geschlossen wird. Das wiederverdichtete Restgas wird durch Druckleitung ? und Ventil 9 entweder in eine leere   Stahlflasehe   10 oder in einen andern Niederdruekrezipienten   gedrückt,   aus welchem heraus gelegentlich ein Verbrauch stattfinden kann.

   Auf diese Weise geht die Restmenge nicht verloren. Sie wird nur wieder auf einen entsprechenden Verbrauehsdruck umgepumpt. 



   Ist der Druck im Vergaser auf   Atmosphärendruck   gesunken, so macht man die   Füllöffnung   frei und schliesst die Flüssigkeitsleitung an. Die im Füllvorgang vergasende Menge wird nun in gleicher Weise umgepumpt, so dass   hiedureh   der   Umfüllprozess   gänzlich verlustlos bleibt bzw. alles umgefüllte Gas restlos in   verbrauchsfähiges   Druckgas verwandelt wird. 



   Die Kompressorarbeit des Umpumpens ist nicht bedeutend, da der Druck nicht höher als zirka 20 at gesteigert zu werden braucht. Die Rohrleitungen 3 und 7 sind als ortsbewegliche   Druckschläuche   gedacht. Sie werden durch einfache Handgriffe und   Momentverschlüsse   4, 8 in die Arbeitslage gebracht. 



   Nach dem Verfahren gemäss der Erfindung ist mit den beschriebenen Mitteln auch die Auffüllung von   Tanks am Verbrauchsorte   ohne weiteres   durchführbar.   Das im Tank befindliche Gas wird abgepumpt, so dass sein Rest an Flüssigkeit nun ohne weiteres frisch aufgefüllt werden kann. Die Nachfüllung des Tanks mit flüssigem Sauerstoff findet also statt, auch ohne dass der Flüssigkeitsinhalt des Tanks beim Verbraucher vollkommen aufgebraucht ist. Auf diese Weise vergrössert man die Leistungsfähigkeit von   Hochdruck- und Niederdruckgefässen   (Tanks), indem die Auffüllung unabhängig vom jeweiligen Flüssigkeitsinhalte gemacht wird. 



   Naturgemäss wird dann im Verfahren nichts   geändert, wenn   der Kompressor nicht fahrbar, sondern ortsfest beim Verbraucher steht. 



   PATENT-ANSPRÜCHE :
1. Verfahren zum Transport und Aufbewahren sowie zum Ab-und Umfüllen tiefsiedender, verflüssigter Gase, insbesondere für Schweiss- und Schneidzwecke, dadurch gekennzeichnet, dass die während des Transportes, des Lagerns oder des Ab- und Umfüllens verflüssigter Gase ungewollt anfallenden Ver-   dampfungsprodukte durch mechanische Kompressionsmittel (Kompressoren, Pumpen od. dgl. ) abge-   saugt und auf den   gewünschten   Druck   gebracht werden, während   die gewollte Vergasung der verflüssigten Gase durch Selbstkompression erfolgt.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   The subject of the invention is a method for utilizing the low-pressure, loss or residual gases that arise when filling and transferring low-boiling, liquefied gases, in which the gas quantities that are not converted to the intended working pressure by self-compression in closed pressure vessels in order to prevent losses, be brought to the operating pressure with the help of mechanical compression, for example by compressors.



   In addition, the subject matter of the invention is characterized in that the "inadmissible" overpressures that develop in the liquid containers during the gas consumption pauses are generated
When a permissible pressure determined with regard to the liquid container is exceeded, gas quantities are brought to high pressures with the help of mechanical compression means and transferred to high-pressure gas storage containers.



   Low-boiling, liquefied gases such as oxygen, nitrogen, hydrogen, methane or the like that are used for industrial purposes are compressed in steel bottles according to customary methods at the place of production and fed to the points of use located away from them or also fed there in pipelines. Both types of supply require large investment capital, be it in terms of the steel plate material or in terms of the pipelines to be laid. The steel bag with an average weight of 75 kg can, for example, only hold 0.5 kg of hydrogen and 8 legs of oxygen. The conditions for the shipment of other such gases are similar.

   The situation is more favorable if, as is also known, the gases are liquefied beforehand and transported in the liquid state and then compressed at the point of use in suitable devices by self-compression to the desired pressure, possibly up to 150 atm and more.



   However, this encounters difficulties insofar as certain transfer losses always occur when transferring the liquefied gas from the transport container into the high-pressure gasifier. According to the present invention, all evaporation losses during the transfer period and during operation are made completely usable by means of mechanical compression (compressors).



   While the liquefied gas is fed directly from a low-pressure tank at the place of consumption into a
 EMI1.2
 Compression work brought to such a high pressure as it is difficult to achieve by self-compression for practical reasons.



   As a result, liquefied gases can be stored for a long time without any loss, because when they are not consumed, the evaporation products are repeatedly brought into appropriate pressure containers at the point of use with mechanical compression means, and gas is prevented from escaping into the open. The power outlay for such a compressor, which then has to press gas from about 75 atmospheres to 150 atmospheres, is very low. In this case the compressor is at the place of consumption.



   An embodiment of the method is shown schematically in the accompanying drawing.



  1 is the tank containing the liquid on a trolley. 2 is a vehicle-mounted compressor driven by the vehicle engine, for example. Occasionally the supply of a consumer with liquefied oxygen contains the at the point of consumption

 <Desc / Clms Page number 2>

 Lent carburetor 11 still has a residual amount of gas of about 6 atm pressure, which cannot be consumed any further. This residual amount is withdrawn through a temporarily connectable pipe 3 through valve 5 while valve 6 is closed. The recompressed residual gas is through the pressure line? and valve 9 pressed either into an empty steel bottle 10 or into another low-pressure recipient, from which consumption can occasionally take place.

   In this way the remaining amount is not lost. It is only pumped back to a corresponding consumption pressure.



   If the pressure in the carburetor has dropped to atmospheric pressure, the filling opening is cleared and the liquid line is connected. The amount that is gasified during the filling process is now pumped around in the same way, so that the filling process remains completely lossless or all the gas that has been filled is completely converted into consumable compressed gas.



   The compressor work of pumping is not important, since the pressure does not need to be increased more than about 20 atm. The pipes 3 and 7 are intended as portable pressure hoses. They are brought into the working position by simple hand movements and momentary locks 4, 8.



   According to the method according to the invention, the filling of tanks at the place of consumption can easily be carried out with the means described. The gas in the tank is pumped out so that the remainder of the liquid can now easily be refilled. The refilling of the tank with liquid oxygen takes place without the liquid content of the tank being completely used up by the consumer. In this way, the capacity of high-pressure and low-pressure vessels (tanks) is increased by making the filling independent of the respective liquid content.



   Naturally, nothing is changed in the process if the compressor is not mobile but is stationary at the consumer.



   PATENT CLAIMS:
1. A method for transporting and storing as well as for filling and transferring low-boiling, liquefied gases, in particular for welding and cutting purposes, characterized in that the evaporation products accruing inadvertently during transport, storage or filling and transferring of liquefied gases through mechanical compression means (compressors, pumps or the like) are sucked off and brought to the desired pressure, while the desired gasification of the liquefied gases takes place by self-compression.

 

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass vor dem Füllen des Vergasers mit EMI2.1 gewünschten Druck gebracht und in entsprechende Hochdruckbehälter gefüllt werden. 2. The method according to claim 1, characterized in that prior to filling the gasifier with EMI2.1 brought to the desired pressure and filled into appropriate high-pressure containers. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die während des Füllens des Vergasers in ihm entwickelten Gase sowie die von dem verflüssigten Gas aus dem Transportbehälter in den Vergaser mitgeführten Gasdämpfe von dem Kompressor angesaugt und als Gase von bestimmtem Druck in die Hochdruekbehälter befördert werden. EMI2.2 3. The method according to claim 1, characterized in that the gases developed in it during filling of the gasifier and the gas vapors carried by the liquefied gas from the transport container into the gasifier are sucked in by the compressor and conveyed as gases of a certain pressure into the high-pressure container . EMI2.2
AT135115D 1928-02-16 1929-01-15 Process for utilizing the low-pressure, waste or residual gases that arise when filling and transferring low-boiling, liquefied gases. AT135115B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1786159X 1928-02-16

Publications (1)

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AT135115B true AT135115B (en) 1933-10-25

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AT135115D AT135115B (en) 1928-02-16 1929-01-15 Process for utilizing the low-pressure, waste or residual gases that arise when filling and transferring low-boiling, liquefied gases.

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US (2) US1786159A (en)
AT (1) AT135115B (en)
BE (1) BE357592A (en)
FR (1) FR668399A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722105A (en) * 1952-10-13 1955-11-01 Little Inc A Delivery tube for liquefied gases
US3066495A (en) * 1958-04-28 1962-12-04 Union Carbide Corp Apparatus and method for filling manifolded gas container
US3234745A (en) * 1962-01-24 1966-02-15 Fisher Governor Co Multiple tank filling system

Also Published As

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BE357592A (en)
US1786159A (en) 1930-12-23
USRE18774E (en) 1933-03-21
FR668399A (en) 1929-10-31

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