DE455016C - Process for the production of hydrogen by partial liquefaction of hydrogen-containing gas mixtures - Google Patents

Process for the production of hydrogen by partial liquefaction of hydrogen-containing gas mixtures

Info

Publication number
DE455016C
DE455016C DEA44666D DEA0044666D DE455016C DE 455016 C DE455016 C DE 455016C DE A44666 D DEA44666 D DE A44666D DE A0044666 D DEA0044666 D DE A0044666D DE 455016 C DE455016 C DE 455016C
Authority
DE
Germany
Prior art keywords
hydrogen
production
partial liquefaction
nitrogen
containing 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
DEA44666D
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 Air Liquide SA filed Critical Air Liquide SA
Application granted granted Critical
Publication of DE455016C publication Critical patent/DE455016C/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
    • F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/506—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification at low temperatures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/047—Composition of the impurity the impurity being carbon monoxide

Description

Vorliegende Erfindung betrifft die Behandlung von Gasgemischen, wie Koksofengas, Gas von städtischen Werken u. dgl., zwecks Ausscheidung des in denselben enthaltenen Wasserstoffes durch teilweise Verflüssigung. Es ist bekannt, daß, da der in solchen Gasen meist enthaltene Stickstoff von allen Bestandteilen außer Wasserstoff derjenige ist, der sich am schwersten verflüssigen läßt, die rückständigen komprimierten Gase durch den sich zuletzt bildenden flüssigen Stickstoff einem Waschverfahren unterzogen werden, das in sehr wirksamer Weise zur Beseitigung des Kohlenoxydes beiträgt.The present invention relates to the treatment of gas mixtures, such as coke oven gas, Gas from municipal works and the like, for the purpose of eliminating what is contained in them Hydrogen through partial liquefaction. It is known that since the in such Gases mostly contain nitrogen of all components except hydrogen is the one the most difficult to liquefy, the residual compressed gases through the liquid nitrogen that forms last are subjected to a scrubbing process, which contributes in a very effective way to the elimination of the carbon monoxide.

Es ist ferner bekannt, daß, wenn man dem bei der Verflüssigung übrigbleibenden komprimierten Wasserstoff vor seinem Entspannen unter Abgabe äußerer Arbeit einen gewissen Prozentsatz kalten komprimiertenIt is also known that when the remaining from liquefaction is compressed Hydrogen was compressed a certain percentage of cold before decompression, releasing external work

ao Stickstoffes zusetzt, dieser Stickstoff sich gegen Ende jedes Entspannungsprozesses verflüssigt und das Schmieren der Entspannungsmaschine besorgt. ao nitrogen adds, this nitrogen itself liquefied towards the end of each expansion process and takes care of the lubrication of the expansion machine.

Vorliegende Erfindung soll nun zeigen, in welcher Weise man den zu diesem letzteren Zweck (Schmierung der Entspannungsmaschine) nötigen Stickstoff zur Verbesserung des oben erwähnten Wasch Verfahrens verwenden kann, besonders wenn in den behandelten Gasen wenig Stickstoff enthalten ist.The present invention is now to show in which way one can to this latter Purpose (lubrication of the expansion machine) necessary nitrogen to improve the above-mentioned washing process especially if the treated gases contain little nitrogen is.

Das Verfahren besteht darin, daß der zur Schmierung nötige, vorher in den Temperaturausgleichern abgekühlte Stickstoffstrom gegebenenfalls zuerst in einem Röhrensystem, das von kaltem, aus dem Verdampfer des Apparates kommenden Kohlenoxyd durchzogen wird, einer zusätzlichen Kühlung und jedenfalls einer möglichst intensiven Endkühlung unterworfen wird, indem man denselben durch ein in der Austrittleitung der Entspannungsmaschine liegendes Röhrensystem streichen läßt.The method consists in that the necessary for lubrication, beforehand in the temperature equalizers cooled nitrogen flow, if necessary, first in a tube system, which is permeated with cold carbon dioxide coming from the evaporator of the apparatus additional cooling and, in any case, as intensive final cooling as possible is subjected by passing the same through a system of pipes located in the outlet line of the expansion machine can be deleted.

Der in dieser Weise gebildete flüssige Stickstoff, der die unmittelbare Nähe des Erstarrungspunktes erreichen kann, wird alsdann in eine Rektifikationskolonne mit Raschigringen bzw. Tellern, die das Röhrenbündel verlängern, abgeleitet, das den rückständigen komprimierten Wasserstoff, derThe liquid nitrogen formed in this way, which is in the immediate vicinity of the solidification point can reach, is then in a rectification column with Raschig rings or plates, which the tube bundle extend, derived, that the residual compressed hydrogen, the

Mwtsch«*VAT «*

noch geringe Mengen Kohlenoxyd enthält, abgibt. Unter der Einwirkung des sehr kalten flüssigen Stickstoffes, vorausgesetzt, daß er in genügender Menge vorhanden ist, wird das gesamte Kohlenoxyd zurückgehalten. Der Stickstoff erwärmt sich und verdampft dann, indem er die Verflüssigung des Kohlenoxydes auf dem Weg durch die Rektifikationskolonne hervorruft. Zweckmäßig soll eine genügendestill contains small amounts of carbon monoxide. Under the action of the very cold liquid nitrogen, provided that it is present in sufficient quantity all the carbon dioxide retained. The nitrogen heats up and then evaporates, by having the carbon dioxide liquefied on its way through the rectification column evokes. Appropriately, a sufficient

ίο Menge dieser Waschflüssigkeit verwendet werden, damit noch ein Überschuß an flüssigem Stickstoff mit dem durch diese Flüssigkeit kondensierten Kohlenoxyd übrigbleibt; in diesem Fall wird dieser Überschuß am unteren Teil des Verflüssigungsbündels. für Kohlenoxyd abgeleitet. Der übrige Teil verdampft, mischt sich mit den Gasen, und durch dessen Verflüssigung in der Entspannungsmaschine wird die Schmierung derselben unter ίο amount of this washing liquid used so that there is still an excess of liquid nitrogen with the flow through this liquid condensed carbon oxide remains; in this case this excess becomes at the lower part of the liquefaction bundle. for Derived from carbon monoxide. The remaining part evaporates, mixes with the gases, and through its liquefaction in the expansion machine is the lubrication of the same under

ao normalen Bedingungen gewährleistet.ao normal conditions guaranteed.

Claims (1)

Patentanspruch :Claim: Verfahren zur Gewinnung von Wasserstoff bzw. von wasserstoffreichem Gasgemisch durch teilweise Verflüssigung von wasserstoffhaltigen Gasgemischen und durch Entspannung unter Leistung äußerer Arbeit, dadurch gekennzeichnet, daß die Kälte des entspannten Gases oder Gasgemisches zur Verflüssigung und Kühlung von komprimiertem Stickstoff bei sehr tiefer Temperatur verwendet wird, und daß der so gewonnene flüssige Stickstoff dazu benutzt wird, um das durch die teilweise Verflüssigung gewonnene wasserstoffreiche Gasgemisch vor seiner Entspannung zv- waschen, während der verbleibende gasförmige Stickstoff zur Schmierung der Entspannungsmaschine verwendet wird.Process for the production of hydrogen or of a hydrogen-rich gas mixture by partial liquefaction of hydrogen-containing gas mixtures and by relaxation with the performance of external work, characterized in that the coldness of the relaxed gas or gas mixture is used to liquefy and cool compressed nitrogen at a very low temperature, and that the liquid nitrogen obtained in this way is used to wash the hydrogen-rich gas mixture obtained by the partial liquefaction before it is expanded , while the remaining gaseous nitrogen is used to lubricate the expansion machine.
DEA44666D 1924-05-15 1925-04-08 Process for the production of hydrogen by partial liquefaction of hydrogen-containing gas mixtures Expired DE455016C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR455016X 1924-05-15

Publications (1)

Publication Number Publication Date
DE455016C true DE455016C (en) 1928-01-23

Family

ID=8901199

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA44666D Expired DE455016C (en) 1924-05-15 1925-04-08 Process for the production of hydrogen by partial liquefaction of hydrogen-containing gas mixtures

Country Status (3)

Country Link
DE (1) DE455016C (en)
FR (1) FR594530A (en)
NL (1) NL18423C (en)

Also Published As

Publication number Publication date
NL18423C (en)
FR594530A (en) 1925-09-14

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