DE481138C - Process for liquefying and separating gas mixtures - Google Patents

Process for liquefying and separating gas mixtures

Info

Publication number
DE481138C
DE481138C DEM76747D DEM0076747D DE481138C DE 481138 C DE481138 C DE 481138C DE M76747 D DEM76747 D DE M76747D DE M0076747 D DEM0076747 D DE M0076747D DE 481138 C DE481138 C DE 481138C
Authority
DE
Germany
Prior art keywords
column
nitrogen
liquefying
gas mixtures
separating gas
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
DEM76747D
Other languages
German (de)
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.)
FENO GES fur ENERGIEVERWERTUN
Original Assignee
FENO GES fur ENERGIEVERWERTUN
Publication date
Priority to DEM76747D priority Critical patent/DE481138C/en
Application granted granted Critical
Publication of DE481138C publication Critical patent/DE481138C/en
Expired legal-status Critical Current

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
    • F25J3/02—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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04351—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of 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
    • 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
    • F25J3/044—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 single pressure main column system only
    • 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
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/76—Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration cycle

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)

Description

Verfahren zum Verflüssigen und Trennen von Gasgemischen Die Erfindung betrifft ein Verfahren zum Verflüssigen und Trennen schwerkondensierbarer Gasgemische, wie Luft u. dgl. Erfindungsgemäß wird ein Teil des im Verdampfer verflüssigten Druckstickstoffes von etwa ioo bis zoo Atm. auf Trennerdruck entspannt, in den oberen Teil der Säule direkt 'aufgegeben, während der andere Teil in einem am Kopf der Säule angeordneten Kondensator entspannt wird, in welchem die für die`Vaschflüssigkeiten bestimmten Dämpfe verflüssigt und in die Säule zurückgeführt werden.Method for liquefying and separating gas mixtures The invention relates to a process for liquefying and separating gas mixtures that are difficult to condense, such as air and the like from about ioo to zoo atm. relaxed on separator pressure, in the upper part of the column directly 'abandoned, while the other part in one arranged at the head of the column The condenser is relaxed, in which the intended for the 'vash liquids Vapors are liquefied and returned to the column.

Der Trennerdruck kann etwa 5 bis io Atm. betragen, aber mit Rücksicht auf die tiefe Temperatur des den Kondensator kühlenden entspannten flüssigen Stickstoffes noch weit unter 5Atm. sinken.The separator pressure can be about 5 to 10 atm. amount, but with consideration to the low temperature of the relaxed liquid nitrogen cooling the condenser still far below 5Atm. sink.

Die Durchführung des Verfahrens gemäß der Erfindung soll an dem Beispiel der Verflüssigung und Zerlegung von Luft erläutert werden. Es kann mittels der in der Abbildung dargestellten Ausführungsform einer Vorrichtung für die Verflüssigung und Trennung schwerkondensierbarer Gasgemische ermöglicht «-erden.The implementation of the method according to the invention should be based on the example the liquefaction and decomposition of air are explained. It can be done using the in the embodiment shown in the figure of a device for liquefaction and separation of difficultly condensable gas mixtures enables «-erden.

Um die Trennung in Sauerstoff und Stickstoff unter Trennerdruck durchführen zu können, wird der Verdampfer oder die Blase d mittels Druckstickstoff, welcher durch einen nicht gezeichneten Hochdruckverdichter in die Heizschlange f gedrückt wird, beheizt, wobei sich der Stickstoff verflüssigt. Die erhaltene Stickstoffflüssigkeit wird mittels des an die Spirale f sich anscbließenden Rohres f i teilweise in den Kondensator>>. teilweise in die Säule c auf geeigneten Druck entspannt, und zwar mittels des Rohres g, in welches das Ventil h eingebaut ist. Es wird also ein Teil des flüssigen Stickstoffes auf Säulendruck entspannt, der innerhalb der Säule mit zum Auswaschen des aufsteigenden Dampfgemisches dient. Es kann der Säule an mehreren Stellen Gasgemisch entnommen und durch den Kondensator p geführt werden, worauf die dabei sich bildende Flüssigkeit als Waschflüssigkeit in die Säule aufgegeben wird> , Da diese Waschung nicht das Wesen der Erfindung berührt, so ist sie nicht besonders zur Darstellung gebracht. Die zu trennende Luft wird nach erfolgter Reinigung und Vorkühlung bei o1 in die Abtriebs.säufe b unter Säulendruck eingeführt. Vom Stickstoffverdichter wird der benötigte Stickstoff aus dem abgeschiedenen Stickstoff .angesaugt. Bei O kann gasförmiger reiner Sauerstoff und bei N reiner gasförmiger Stickstoff der Säule bzw. dem Kondensator entnommen werden.In order to be able to perform the separation into oxygen and nitrogen under separator pressure, the evaporator or the bladder d is heated by means of pressurized nitrogen, which is pressed into the heating coil f by a high-pressure compressor (not shown), with the nitrogen liquefying. The nitrogen liquid obtained is partially into the condenser >> by means of the pipe f i connected to the spiral f. partially relaxed in the column c to a suitable pressure, by means of the tube g in which the valve h is installed. A part of the liquid nitrogen is released to column pressure, which is used within the column to wash out the rising vapor mixture. A gas mixture can be taken from the column at several points and passed through the condenser p, whereupon the liquid which is formed is fed into the column as washing liquid. Since this washing does not affect the essence of the invention, it is not specifically illustrated . After cleaning and precooling, the air to be separated is introduced into the stripping tank b under column pressure at o1. The nitrogen required is sucked in from the separated nitrogen by the nitrogen compressor. With O, pure gaseous oxygen and with N pure gaseous nitrogen can be taken from the column or the condenser.

Die neue technische Wirkung, welche durch die beschriebene Arbeitsweise erreicht wird, besteht darin, daß der im Kreislauf verdichtete Stickstoff, der, wenn er vollständig in die Säule entspannt wird, einen gewissen Reinheitsgrad von etwa 97 % nicht überschreiten kann, nunmehr ständig einer Nachreinigung unterworfen wird, so daß ein reinerer Stickstoff gewonnen werden kann, ,als er bisher erhalten werden konnte.The new technical effect, which by the described way of working is achieved, consists in the fact that the nitrogen compressed in the cycle, the when completely relaxed into the column, a certain degree of purity of Cannot exceed about 97%, now constantly subjected to post-cleaning is so that a purer nitrogen can be obtained than previously obtained could be.

Für den Trennungsvorgang ist es belanglos, in welcher Weise die unter Trennerdruck durch den Austauscher abgezogenen Bestandteile weiterbehandelt und verwertet werden.For the separation process, it is irrelevant in which way the Separator pressure treated by the exchanger and withdrawn components be recycled.

Claims (1)

PATErrTAUSPRUCg: Verfahren zum Verflüssigen und Trennen von Gasgemischen bei Überdruck durch Waschen mit Stickstoff in einer einzigen Säule, dadurch gekennzeichnet, daß der zum Beheizen der Blase dienende Hochdruckstickstoff nur zum Teil zur Kühlung in den Kondensator entspannt wird, während der .andere Teil des Hochdruckstickstoffes auf Säulendruck entspannt in die Säule direkt als Waschflüssigkeit eingeführt wird.PATTERN EXPRESSION: Process for liquefying and separating gas mixtures at overpressure by washing with nitrogen in a single column, characterized in that that the high-pressure nitrogen used to heat the bladder is only partially used for cooling is expanded in the condenser, while the other part of the high pressure nitrogen is introduced into the column directly as a washing liquid in a relaxed manner at column pressure.
DEM76747D Process for liquefying and separating gas mixtures Expired DE481138C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM76747D DE481138C (en) Process for liquefying and separating gas mixtures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM76747D DE481138C (en) Process for liquefying and separating gas mixtures

Publications (1)

Publication Number Publication Date
DE481138C true DE481138C (en) 1929-08-14

Family

ID=7317209

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM76747D Expired DE481138C (en) Process for liquefying and separating gas mixtures

Country Status (1)

Country Link
DE (1) DE481138C (en)

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