Producing hydrogen and oxygen by decomposition of water via the

Details Producing hydrogen and oxygen by decomposition of water via the Producing hydrogen and oxygen by decomposition of water via the

1975-09-12

1977-05-17

Vertiz, O. R.

Chemistry of inorganic compounds

Oxygen or compound thereof

423658, 423493, C01B 1300, C01B 108

Patent

active

040242307

ABSTRACT:
Decomposition of water to hydrogen and oxygen with the aid of a thermochemical cyclic process based upon the iron/chlorine system by reduction of FeCl.sub.2 in the presence of H.sub.2 to Fe, oxidation of the Fe with steam to Fe.sub.3 O.sub.4, treatment of the hot Fe.sub.3 O.sub.4 with steam and chlorine to obtain oxygen, conversion of themixture of iron oxides so obtained with hydrogen chloride to FeCl.sub.2 and recycling of the FeCl.sub.2 to the reduction stage, wherein a part of the heat required for the process is supplied by heating the hydrogen and steam in indirect heat exchange with a hot coolant from a high temperature nuclear reactor. The conversion of the iron oxides to FeCl.sub.2 is carried out via the intermediate stage of dimeric FeCl.sub.3 and it is thus possible to convey the solid reaction products by free fall through the reaction zones.

REFERENCES:
patent: 1874225 (1932-08-01), Barstow et al.
patent: 3443991 (1969-05-01), Kremm
patent: 3842164 (1974-10-01), Wentorf
patent: 3939257 (1976-02-01), Pangborn et al.

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