Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Halogenous component
Patent
1982-09-21
1984-09-18
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Halogenous component
423230, 423241, 423244, 48197R, C01B 700, C01B 1700, B01J 800, C10J 300
Patent
active
044723636
ABSTRACT:
Fuel gas produced in a coal distillation or gasification plant 1 is fed to a power plant 5 and chlorine, fluorine, sulphur and compounds thereof in the fuel gas are separated from the fuel gas, and also from flue or exhaust gas emanating from the power plant, in two stages. In a first stage, chlorine and fluorine and their compounds are separated, preferably in the dry using alkali metal or alkaline earth metal oxides, hydroxides or carbonates, in a separator 3. In a second stage sulphur and its compounds, together with further chlorine, fluorine and their compounds, if any, produced in the power plant, are removed from the flue or exhaust gas from the power plant in a desulphurizing plant 6. This two stage process is thermally more efficient and less costly than a process in which the chlorine, fluorine sulphur and their compounds are all removed at once from the fuel gas.
REFERENCES:
patent: 3386798 (1968-06-01), Bevans
patent: 3520649 (1970-07-01), Tomany et al.
patent: 4302218 (1981-11-01), Friedman
Poller Jurgen
Weinzierl Klaus
Heller Gregory A.
Vereinigte Elektrizitatswerke Westfalen AG
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