DE2424352A1 - Hydrogen prodn. from water by cyclic process - using metal sulphate formation in one stage, increasing flexibility - Google Patents
Hydrogen prodn. from water by cyclic process - using metal sulphate formation in one stage, increasing flexibilityInfo
- Publication number
- DE2424352A1 DE2424352A1 DE2424352A DE2424352A DE2424352A1 DE 2424352 A1 DE2424352 A1 DE 2424352A1 DE 2424352 A DE2424352 A DE 2424352A DE 2424352 A DE2424352 A DE 2424352A DE 2424352 A1 DE2424352 A1 DE 2424352A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- hydrogen
- cyclic process
- stage
- metal
- 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.)
- Pending
Links
Classifications
-
- 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
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/068—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents the hydrogen being generated from the water as a result of a cyclus of reactions, not covered by groups C01B3/063 or C01B3/105
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- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
Description
Verfahren zur Gewinnung von Wasserstoff Die Erfindung betrifft ein Verfahren zur Gewinnung von Wasserstoff aus Wasser in einem mehrstufigen Kreislaufprozess. Process for the production of hydrogen The invention relates to a Process for the production of hydrogen from water in a multistage cycle process.
Im Hinblick auf die erhöhten Anforderungen zur Bereitstellung von Energie sind in letzter Zeit Verfahren zur Gewinnung von Wasser stoff untersucht worden, bei denen in mehrstufigen Kreislaufprozessen aus Wasser durch Umsetzungen mit insbesondere anorganischen Metallsalzen, z. B. Eisen- oder Kupferverbindungen, unter gleichzeitigem Einsatz von Anionen z. B. Schwefel oder Halogen, Wasserstoff erzeugt wird. Das Auffinden geeigneter derartiger Kreialaufprozesse, die meist vier Stufen oder mehr umfassen, ist kompliziert. Es wurden bisher daher-auch nur wenige solche Reaktionsfolgen beschrieben (DOS 2 105 369; DOS 2 321 737), in denen zumeist Eisenverbindungen mit Halogen zum Einsatz kommen. Auch die Anwendung von anorganischen Magnesiumverbindungen, z. B. Magnesiumchlorid, als Hilfsstoffe bei der Durchführung der slaufprozesse ist bereits beschrieben worden. Es wurden bisher nur aufeinander abgestimmte engumrissene Reaktionsfolgen zur Anwendung bei der Zersetzung von Wasser vorgeschlagen.In view of the increased requirements for the provision of Energy processes for the production of hydrogen have recently been investigated been, in which in multi-stage cycle processes from water through conversions with in particular inorganic metal salts, e.g. B. iron or copper compounds, with the simultaneous use of anions z. B. sulfur or halogen, hydrogen is produced. Finding suitable such circular processes, usually four Including stages or more is complicated. So far, there have only been a few such reaction sequences are described (DOS 2 105 369; DOS 2 321 737), in which mostly Iron compounds with halogen are used. Also the use of inorganic Magnesium compounds, e.g. B. magnesium chloride, as auxiliary materials the implementation of the running processes has already been described. There have been so far only closely-defined reaction sequences coordinated with one another for use in the decomposition suggested by water.
Es wurde jetzt gefunden, dass eine solche Begrenzung nicht erforderlich ist, sondern dass es bestimmte Grundreaktionen gibt, deren Durchführung eine erhebliche Flexibilität bei der Auswahl der Reaktionsfolgen für die Kreislaufprozesse erlaubt. Dementsprechend wird erfindungsgemäss ein Verfahren zur Gewinnung von Wasserstoff aus Wasser durch Umsetzung mit anorganischen Metallsalzen und Schwefel in Kreislaufprozessen mit mindestens drei Prozeßstufen vorgeschlagen, bei denen eine der Prozeßstufen die Bildung eines Metall(II)sulfats, aus dem in einer chemischen Umsetzung Schwefeldioxid gewonnen werden kann, umfasst, indem man ein Il-Iliwertiges Metalloxid bzw. ein liwertiges Metallsulfid in Gegenwart von Schwefeldioxid bzw. Schwefel zur Umsetzung bringt.It has now been found that such a limitation is not necessary is, but that there are certain basic reactions, the implementation of which is a significant one Flexibility in the selection of the reaction sequences for the cycle processes is allowed. Accordingly, the invention provides a method for the production of hydrogen from water through reaction with inorganic metal salts and sulfur in circular processes proposed with at least three process stages, in which one of the process stages the formation of a metal (II) sulfate, from which in a chemical reaction sulfur dioxide can be obtained, includes by an Il-Ilivalent metal oxide or a Li-valent metal sulfide in the presence of sulfur dioxide or sulfur for implementation brings.
Zur Bildung der Metall(II)-sulfate kommen insbesondere die Oxide bzw. Sulfide der Metalle Eisen, Mangan und Magnesium in Betracht, doch können auch z. B. Zink, Nickel oder Kobalt zum Einsatz kommen. Gegebenenfalls kann die Umsetzung in Gegenwart anderer Reaktionsteilnehmer, z. B. Wasser oder Wasserstoff, durchgeführt werden.For the formation of the metal (II) sulfates, in particular, the oxides or Sulphides of the metals iron, manganese and magnesium into consideration, but can also, for. B. zinc, nickel or cobalt can be used. If necessary, the implementation in the presence of other reactants, e.g. B. water or hydrogen performed will.
Durch die Einschaltung dieser Reaktion ist es möglich, den Kreislaufprozess in mehreren Varianten aufzubauen, so dass die enge Beschränkung auf eine ganz bestimmte Reaktionsfolge, wie sie bisher vorgeschrieben wurde, entfällt.By engaging this reaction it is possible to stop the circulatory process to be built up in several variants, so that the narrow restriction to a very specific one The sequence of reactions as previously prescribed is not applicable.
Man wird im allgemeinen bestrebt sein, mit möglichst wenig Reaktionsschritten den Verfahrenskreislauf zu schliessen. Es kann aber gegebenenfalls zweckmässig sein, auf mehr Reaktionsfolgen auszuweichen, wenn anderenfalls der Aufwand für den Gesamtprozess zu hoch wird. Die Durchführung aller Prozeßstufen, bei denen es sich im Prinzip um die bekannten thermodynamisch möglichen Reaktionen handelt, wird in üblicher Weise vorgenommen.In general, efforts will be made to have as few reaction steps as possible to close the procedural cycle. However, it may be useful if necessary to resort to more reaction consequences, if otherwise the effort for the entire process becomes too high. Carrying out all stages of the process, which are in principle the well-known thermodynamically possible reactions is in more common Way made.
Als Beispiele für die erfindungsgemässe Prozeßstufe seien folgende Umsetzungen genannt: 3 MgO + 4 SO2 + H2O = 3 MgSO4 + H2S MgS + 4 S + 4 H20 5 MgSO4 + 4 H2S Mn203 + S02 = MnS04 + MnO MnS + 4 S + 4 H20 = MnS04 + 4 H2S 6 Fe2O3 + 13 SO2 = 11 FeSO4 + FeS2 FeS2 + 2 SO2 = FeSO4 + 3 S Mit Hilfe dieser Sulfate kann eine Vielzahl von Kreislaufprozessen aufgebaut werden, die die Zerlegung von Wasser in Wasserstoff und Sauerstoff gestatten.The following are examples of the process stage according to the invention Conversions called: 3 MgO + 4 SO2 + H2O = 3 MgSO4 + H2S MgS + 4 S + 4 H20 5 MgSO4 + 4 H2S Mn203 + S02 = MnS04 + MnO MnS + 4 S + 4 H20 = MnS04 + 4 H2S 6 Fe2O3 + 13 SO2 = 11 FeSO4 + FeS2 FeS2 + 2 SO2 = FeSO4 + 3 S With the help of these sulphates a A multitude of cycle processes are built up, which decompose water into Allow hydrogen and oxygen.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2424352A DE2424352A1 (en) | 1974-05-20 | 1974-05-20 | Hydrogen prodn. from water by cyclic process - using metal sulphate formation in one stage, increasing flexibility |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2424352A DE2424352A1 (en) | 1974-05-20 | 1974-05-20 | Hydrogen prodn. from water by cyclic process - using metal sulphate formation in one stage, increasing flexibility |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2424352A1 true DE2424352A1 (en) | 1975-12-04 |
Family
ID=5915999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2424352A Pending DE2424352A1 (en) | 1974-05-20 | 1974-05-20 | Hydrogen prodn. from water by cyclic process - using metal sulphate formation in one stage, increasing flexibility |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2424352A1 (en) |
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1974
- 1974-05-20 DE DE2424352A patent/DE2424352A1/en active Pending
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