DE4332789A1 - Process for storing energy - Google Patents

Process for storing energy

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Publication number
DE4332789A1
DE4332789A1 DE4332789A DE4332789A DE4332789A1 DE 4332789 A1 DE4332789 A1 DE 4332789A1 DE 4332789 A DE4332789 A DE 4332789A DE 4332789 A DE4332789 A DE 4332789A DE 4332789 A1 DE4332789 A1 DE 4332789A1
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Germany
Prior art keywords
hydrogen
energy
carbon dioxide
methanol
reactor
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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.)
Ceased
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DE4332789A
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German (de)
Inventor
Baldur Dr Eliasson
Eric Killer
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ABB Research Ltd Switzerland
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ABB Research Ltd Switzerland
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Application filed by ABB Research Ltd Switzerland filed Critical ABB Research Ltd Switzerland
Priority to DE4332789A priority Critical patent/DE4332789A1/en
Priority to AU71568/94A priority patent/AU7156894A/en
Priority to JP6231439A priority patent/JPH07149670A/en
Publication of DE4332789A1 publication Critical patent/DE4332789A1/en
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
    • C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
    • 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
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • 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
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • C01B3/042—Decomposition of water
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/02—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon
    • C07C1/12—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon from carbon dioxide with hydrogen
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

To store hydrogen energy, a mixture of hydrogen and carbon dioxide is converted in a reactor into methane and/or methanol. Preferably, the carbon dioxide from the exhaust gas of fossil-fuelled energy (power) generation plants is used here. Methane or methanol can be used as required as an energy source for vehicles, power stations and heating systems. <IMAGE>

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung bezieht sich auf ein Verfahren zur Speicherung von Energie. Sie betrifft insbesondere ein Verfahren zur Speicherung von Energie aus Wasserstoff.The invention relates to a method for storage of energy. It relates in particular to a method for Storage of energy from hydrogen.

TECHNOLOGISCHER HINTERGRUND UND STAND DER TECHNIKTECHNOLOGICAL BACKGROUND AND PRIOR ART

Der Kohlendioxidausstoß fossiler Verbrennungsprozesse hat ein Ausmaß erreicht, das globale Veränderungen der Zusam­ mensetzung der Atmosphäre bewirkt und über den Treibhausef­ fekt zu gravierenden Klimaveränderungen führen kann. Nach Angaben der IPCC-Kommission, welche die Weltklima-Konferenz in Genf im Oktober/November 1990 vorbereitet hat, müßte man die Emission von Kohlendioxid sofort um 60% reduzieren, um den Kohlendioxid-Gehalt der Atmosphäre zu stabilisieren.The carbon dioxide emissions from fossil combustion processes reached a level that global changes in the together the atmosphere and the greenhouse boss can lead to serious climate changes. To Information from the IPCC Commission, which is the World Climate Conference in Geneva in October / November 1990, one would have to immediately reduce the emission of carbon dioxide by 60% stabilize the carbon dioxide content of the atmosphere.

Schon vor vielen Jahren wurde vorgeschlagen, Wasserstoff als Energieträger für Verkehrsmittel und stationäre Anlagen zu verwenden, weil die Verbrennung von Wasserstoff absolut "sauber" erfolgt. Abgesehen vom großen Energieaufwand bei seiner Herstellung ist der Transport, die Lagerung und Handhabung von Wasserstoff sehr problematisch.It was proposed many years ago to be hydrogen Energy sources for transportation and stationary systems too use because the combustion of hydrogen absolutely done "clean". Apart from the large amount of energy involved its manufacture is transportation, storage and Handling hydrogen very problematic.

Hingegen bietet sich die Umwandlung von Kohlendioxid in chemische Verbindungen an, die in großen Mengen Absatz finden könnten, z. B. als Treibstoff für Verkehrsmittel oder Verbrennungsanlagen. Zu diesen Verbindungen gehören in erster Linie Methanol oder auch Methan.On the other hand, there is the conversion of carbon dioxide into chemical compounds that are sold in large quantities could find e.g. B. as a fuel for transportation or  Incinerators. These connections include in primarily methanol or methane.

KURZE DARSTELLUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Speicherung von Wasserstoffenergie anzugeben, das die geschilderten Probleme nicht aufweist und mit dazu beiträgt, den Gesamtausstoß von Kohlendioxid zu vermindern.The invention has for its object a method for Specify storage of hydrogen energy that the does not have the described problems and contributes to reduce the total emissions of carbon dioxide.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Mischung von Wasserstoff und Kohlendioxid in einem Reaktor in Methan und/oder Methanol umgesetzt wird. Vorzugs­ weise wird dabei das Kohlendioxid aus dem Abgas fossil be­ heizter Energieerzeugungsanlagen verwendet.This object is achieved in that a mixture of hydrogen and carbon dioxide in one Reactor is implemented in methane and / or methanol. Preferential wise, the carbon dioxide from the exhaust gas will be fossil heated power generation plants used.

Methan und insbesondere Methanol sind wesentlich problem­ loser zu speichern und handzuhaben. Bekanntlich ist Wasser­ stoff gasförmig unter normalen Bedingungen. Methanol hinge­ gen ist bei Atmosphärendruck und normalen Bedingungen eine Flüssigkeit. Ein weiterer Vorteil von Methanol als Speicher gegenüber Wasserstoff ist, daß Methanol einen fast doppelt so hohen Energiegehalt pro Volumeneinheit hat als flüssiger Wasserstoff.Methane and especially methanol are a major problem more loose to store and handle. Water is known substance gaseous under normal conditions. Methanol was hanging at atmospheric pressure and normal conditions Liquid. Another advantage of methanol as a storage compared to hydrogen is that methanol almost doubles you has such a high energy content per unit volume than liquid Hydrogen.

Die Umwandlung von Wasserstoffenergie ist zwar mit zusätz­ lichem apparativen Aufwand verbunden, doch überwiegen zu­ mindest aus ökologischer Sicht die daraus resultierenden Vorteile:The conversion of hydrogen energy is with additional equipment costs, but predominate at least the resulting from an ecological perspective Benefits:

Die Verbrennung von Methan oder Methanol erzeugt zwar wieder das Treibhausgas Kohlendioxid, doch gewinnt man das Kohlen­ dioxid aus den Abgasen eines anderen Verbrennungsvorganges, z. B. fossil beheizten Kraftwerken, so wird der Kohlendioxid­ ausstoß gesamthaft vermindert. The combustion of methane or methanol does produce again the greenhouse gas carbon dioxide, but you get the coal dioxide from the exhaust gases from another combustion process, e.g. B. fossil-fired power plants, so the carbon dioxide total emissions reduced.  

Die Herstellung von Methan und Methanol aus Kohlendioxid und Wasserstoff kann dabei so erfolgen, daß die Ausgangs­ substanzen Kohlendioxid und Wasserstoff einem thermischen Reaktor zugeführt und darin unter Überdruck und in Anwesen­ heit eines Katalysators in Methanol umgewandelt werden. Eine weitere Möglichkeit ist in der DE-A-42 20 865 beschrieben. Dort wird in einem Reaktor ein Gemisch aus Kohlendioxid und Wasserstoff oder einer Wasserstoff enthaltenden Substanz, z. B. Wasserdampf, stillen elektrischen Entladungen ausge­ setzt und auf diese Methan und Methanol erzeugt.The production of methane and methanol from carbon dioxide and Hydrogen can be so that the output substances carbon dioxide and hydrogen a thermal Reactor fed and therein under pressure and in property unit of a catalyst can be converted into methanol. A Another possibility is described in DE-A-42 20 865. There is a mixture of carbon dioxide and in a reactor Hydrogen or a substance containing hydrogen, e.g. B. steam, silent electrical discharges sets and generates methane and methanol on this.

Die Ausgangssubstanz Wasserstoff kann nach einem der heute gängigen Verfahren hergestellt werden, z. B. durch Elektro­ lyse, wobei als Energiequelle Kernenergie oder erneuerbare Energiequellen (Sonne, Wind, Wasserkraft, Biomasse) dienen können. Daneben kann der Wasserstoff durch Spaltung von Schwefelwasserstoff (H₂S) mittels stiller elektrischer Ent­ ladungen, durch thermische Dissoziation, durch elektroly­ tische Dissoziation oder auch Dissoziation von Schwefelwas­ serstoff mittels Mikrowellen erzeugt werden. Gerade die letztgenannte Methode zeichnet sich durch vergleichsweise geringe Herstellungskosten aus. So werden z. B. bei Verwen­ dung von Mikrowellen etwa 2 kWh/m₃ Wasserstoff, bei der Elektrolyse etwa 5 kWh/m₃ Wasserstoff benötigt (vgl. A.Z. Bagagautdinov et al. "Proceedings of the 9th World Hydrogen Conference" Paris, France, June 22-25, 1992, pp. 87-90). Schwefelwasserstoff fällt bei bestimmten chemischen Verfahren quasi als Abfallprodukt an; er ist auch ein Neben­ produkt der erdgasverarbeitenden Industrie. Die Gewinnung von Wasserstoff aus Schwefelwasserstoff hat dazu den Vorteil, daß dessen Bindungsenergie kleiner ist als die von Wasser.The starting substance hydrogen can according to one of the today common processes are manufactured, e.g. B. by electro lysis, with nuclear or renewable energy sources Serve energy sources (sun, wind, hydropower, biomass) can. In addition, the hydrogen can be split by Hydrogen sulfide (H₂S) using silent electrical Ent charges, by thermal dissociation, by electroly table dissociation or dissociation of sulfur be generated by means of microwaves. Just that the latter method is characterized by comparative low manufacturing costs. So z. B. in use extension of microwaves about 2 kWh / m₃ hydrogen, in the Electrolysis requires about 5 kWh / m₃ of hydrogen (cf. A.Z. Bagagautdinov et al. "Proceedings of the 9th World Hydrogen Conference "Paris, France, June 22-25, 1992, pp. 87-90). Hydrogen sulfide drops at certain chemical Process as a waste product; he is also a minor product of the natural gas processing industry. The extraction of hydrogen from hydrogen sulfide has the Advantage that its binding energy is less than that of Water.

Das erfindungsgemäße Verfahren wird nachstehend anhand eines Ausführungsbeispiels anhand der Zeichnung näher erläu­ tert.The method according to the invention is described below of an embodiment with reference to the drawing tert.

KURZE BESCHREIBUNG DER ZEICHNUNGBRIEF DESCRIPTION OF THE DRAWING

In der Zeichnung sind Ausführungsbeispiele des erfindungsge­ mäßen Verfahren schematisch dargestellt. Dabei zeigt:In the drawing, embodiments of the fiction are The method is shown schematically. It shows:

Fig. 1 eine erste Variante zur Speicherung von aus Sonnenenergie erzeugter Wasserstoffenergie unter Verwendung eines thermischen Reaktors, wobei als Wasserstoffquelle Wasser dient; Fig. 1 shows a first variant for storing generated from solar energy hydrogen energy using a thermal reactor, serves as a hydrogen source;

Fig. 2 eine zweite Variante zur Speicherung von aus Son­ nenenergie erzeugter Wasserstoffenergie unter Verwendung eines thermischen Reaktors, wobei als Wasserstoffquelle Schwefelwasserstoff dient;2 shows a second variant for storing nenenergie from Son generated hydrogen energy using a thermal reactor, serves as a source of hydrogen sulfide.

Fig. 3 eine zweite Variante zur Speicherung von aus Son­ nenenergie erzeugter Wasserstoffenergie unter Verwendung stiller elektrischer Entladungen. Fig. 3 shows a second variant for storing hydrogen energy generated from Son nenenergie using silent electrical discharges.

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

Gemäß Fig. 1 wird Strahlungsenergie des Sonne 1 in einer Solarstromanlage 2 in elektrische Energie umgewandelt. Diese wird in einer Wasserelektrolyseanlage 3 zur Spaltung von Wasser in Wasserstoff und Sauerstoff verwendet. Der entstan­ dene Sauerstoff wird technischen oder sonstigen Zwecken zugeführt. Der Wasserstoff gelangt in einen Reaktor 4. Fos­ sile Energie (Kohle, Gas, Erdöl), symbolisiert durch den Block 5 wird in einem Kraftwerk 6 in elektrische Energie und/oder Heizenergie umgewandelt. Die Abgasreinigungsanlage des Kraftwerks ist mit einer (bekannten) Einrichtung 6a zur Kohlendioxidgewinnung ausgerüstet, z. B. wie sie in der Fir­ menschrift der ABB Lummus Crest, 12141 Wickester, Houston, TX 77079-9570 U.S.A. "CO₂ Recovery from Flue Gas" undatiert, beschrieben und dargestellt ist. Das gewonnene Kohlendioxid wird ebenfalls dem Reaktor 4 zugeführt.According to Fig. 1 of the solar radiation energy is converted to 1 in a solar power system 2 into electrical energy. This is used in a water electrolysis plant 3 to split water into hydrogen and oxygen. The resulting oxygen is supplied for technical or other purposes. The hydrogen enters a reactor 4 . Fos sile energy (coal, gas, oil), symbolized by block 5 , is converted into electrical energy and / or heating energy in a power plant 6 . The exhaust gas cleaning system of the power plant is equipped with a (known) device 6 a for the production of carbon dioxide, for. B. as in the Fir manuscript of ABB Lummus Crest, 12141 Wickester, Houston, TX 77079-9570 USA "CO₂ Recovery from Flue Gas" undated, described and shown. The carbon dioxide obtained is also fed to the reactor 4 .

Im Reaktor 4 wird z. B. nach dem aus der DE-A-42 20 865 bekannten Verfahren unter Einfluß stiller elektrischer Entladungen Methanol erzeugt. Alternativ kann die Methanol­ synthese auch in einem thermischen Reaktor unter Druck und erhöhter Temperatur und in Anwesenheit eines Katalysators auf Kupferbasis erfolgen. Typische Katalysatoren sind bei­ spielsweise in der Veröffentlichung von N.Kanoun et al. "Catalytic properties of new Cu based catalysts containing Zr and/or V for methanol synthesis from a carbon dioxide and hydrogen mixture" in CATALYSIS LETTERS 15,(1992) 231-235, beschrieben.In the reactor 4 z. B. produced by the method known from DE-A-42 20 865 under the influence of silent electrical discharges methanol. Alternatively, the methanol synthesis can also be carried out in a thermal reactor under pressure and elevated temperature and in the presence of a copper-based catalyst. Typical catalysts are in example in the publication by N. Kanoun et al. "Catalytic properties of new Cu based catalysts containing Zr and / or V for methanol synthesis from a carbon dioxide and hydrogen mixture" in CATALYSIS LETTERS 15, (1992) 231-235.

Das auf diese gewonnene Methanol wird in einem Tank 7 ge­ speichert und kann je nach Bedarf Verbrauchern 8 wie Fahr­ zeugen, Kraftwerken etc. zugeführt werden.The methanol obtained on this is stored in a tank 7 ge and can be used to testify to consumers 8 such as driving, power plants etc.

Bei der in Fig. 2 dargestellten Ausführungsform wird als Wasserstoffquelle Schwefelwasserstoff eingesetzt. Durch Mikrowellen, elektrische Entladungen, elektrolytische oder thermische Dissoziation kann Schwefelwasserstoff nach be­ kannten Verfahren in Wasserstoff und Schwefel zerlegt wer­ den. Eine nach einem dieser Verfahren arbeitende Schwefel­ wasserstoffspaltanlage ist in Fig. 2 mit der Bezugsziffer 3a bezeichnet. Der neben Wasserstoff entstehende Schwefel wird anderweitig verwertet, der Wasserstoff hingegen gelangt in den Reaktor 4. Ansonsten entspricht der Aufbau und die Be­ triebsweise derjenigen nach Fig. 1.In the embodiment shown in FIG. 2, hydrogen sulfide is used as the hydrogen source. Using microwaves, electrical discharges, electrolytic or thermal dissociation, hydrogen sulfide can be broken down into hydrogen and sulfur by known methods. An operating according to one of these methods sulfur hydrogen slitting line is designated in Fig. 2 by the reference numeral 3 a. The sulfur that is produced in addition to hydrogen is used elsewhere, but the hydrogen, on the other hand, reaches reactor 4 . Otherwise, the structure and the operating mode corresponds to that of FIG. 1.

In Fig. 3 ist eine dritte Variante des erfindungsgemäßen Verfahrens zur Wasserstoffenergie-Speicherung schematisch dargestellt, bei welchem Kohlendioxid eine Wasserstoff ent­ haltende Substanz, z. B. Wasser oder Schwefelwasserstoff, einem Reaktor 4a zugeführt werden, in dem das Gemisch aus Kohlendioxid und der besagten Substanz stillen elektrischen Entladungen ausgesetzt wird. Im Gegensatz zu den beiden anderen Varianten wird also hier der Wasserstoff direkt im Reaktor 4a erzeugt und reagiert mit dem Kohlendioxid. Dieses Verfahren und die zugehörige Einrichtung zur Durchführung dieses Verfahrens ist in der DE-A-42 20 865 beschrieben und dargestellt, auf welches Dokument hier ausdrücklich Bezug genommen wird.In Fig. 3, a third variant of the method for hydrogen energy storage according to the invention is shown schematically, in which carbon dioxide ent a hydrogen-containing substance, for. B. water or hydrogen sulfide, a reactor 4 a in which the mixture of carbon dioxide and said substance is exposed to silent electrical discharges. In contrast to the other two variants, the hydrogen is generated directly in the reactor 4 a and reacts with the carbon dioxide. This method and the associated device for carrying out this method is described and illustrated in DE-A-42 20 865, to which document reference is expressly made here.

In allen beschriebenen Alternativen ist dann die Solarener­ gie in Form von Methanol gespeichert. Nach den weiter oben beschriebenen Verfahren kann anstelle von Methanol auch Methan im Reaktor 4 erzeugt werden. Wenn auch Methan weniger einfach zu speichern und handzuhaben ist, bringt es gegen­ über (verflüssigtem) Wasserstoff wesentliche Vorteile (weniger explosiv, leichter zu verflüssigen).In all the alternatives described, the solar energy is then stored in the form of methanol. According to the processes described above, methane can also be generated in reactor 4 instead of methanol. Although methane is less easy to store and handle, it has significant advantages over (liquefied) hydrogen (less explosive, easier to liquefy).

Die Bereitstellung von Wasserstoff kann aber auch auf andere Weise erfolgen, z. B. durch Wasserelektrolyseanlagen oder Schwefelwasserstoff-Spaltanlagen, die mit Nachtstrom ge­ speist werden.The supply of hydrogen can also be applied to others Way, z. B. by water electrolysis or Hydrogen sulfide cracking plants, which with ge be fed.

BezugszeichenlisteReference list

1 Sonne
2 Solarstromanlage
3 Wasser-Elektrolyseanlage
3a Schwefelwasserstoff-Spaltanlage
4, 4a Methanolreaktoren
5 fossiler Energieträger
6 thermisches Kraftwerk
7 Methanolspeicher
8 Verbraucher 1 sun
2 solar power system
3 water electrolysis system
3 a hydrogen sulfide splitting plant
4 , 4 a methanol reactors
5 fossil fuels
6 thermal power plant
7 methanol storage
8 consumers

Claims (4)

1. Verfahren zur Speicherung von Wasserstoffenergie, dadurch gekennzeichnet, daß eine Mischung von Wasserstoff und Kohlendioxid in einem Reaktor in Methan und/oder Methanol umgesetzt wird.1. A method for storing hydrogen energy, characterized in that a mixture of hydrogen and carbon dioxide is reacted in a reactor in methane and / or methanol. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Kohlendioxid aus dem Abgas fossil beheizter Ener­ gieerzeugungsanlagen verwendet wird.2. The method according to claim 1, characterized in that the carbon dioxide from the exhaust gas of fossil-fueled energy power generation plants is used. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeich­ net, daß der Wasserstoff unter Einsatz von Solar- oder Nuklearenergie aus Wasser oder Schwefelwasserstoff gewonnen wird.3. The method according to claim 1 or 2, characterized net that the hydrogen using solar or Nuclear energy from water or hydrogen sulfide is won. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der Wasserstoff in stillen elektrischen Entladungen aus Wasserdampf oder Schwefelwasserstoff gewonnen wird.4. The method according to claim 3, characterized in that the hydrogen in silent electrical discharges Water vapor or hydrogen sulfide is obtained.
DE4332789A 1993-09-27 1993-09-27 Process for storing energy Ceased DE4332789A1 (en)

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DE4332789A DE4332789A1 (en) 1993-09-27 1993-09-27 Process for storing energy
AU71568/94A AU7156894A (en) 1993-09-27 1994-08-30 Process to store energy
JP6231439A JPH07149670A (en) 1993-09-27 1994-09-27 Storage of energy of hydrogen

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