Process for removing and recovering acidic gases from gaseous mi

Details Process for removing and recovering acidic gases from gaseous mi Process for removing and recovering acidic gases from gaseous mi

1976-01-28

1978-01-17

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204103, 204128, C25B 120, C25B 126, C01B 3120, C01B 1760

Patent

active

040691179

ABSTRACT:
A process for the removal and recovery of acidic gas(es) from a gaseous mixture comprising electrolysis of a chloride salt to produce an aqueous metal hydroxide solution, hydrogen and chlorine. The metal hydroxide solution is used to absorb acidic gas from the gaseous mixture and to form an aqueous metal salt. The hydrogen and chlorine are reacted to produce hydrochloric acid, which is used to decompose the aqueous metal salt to produce an aqueous chloride salt and acidic gas. Following separation, the aqueous chloride salt may be electrolyzed again.

REFERENCES:
patent: 2967807 (1961-01-01), Osborne et al.
patent: 3220941 (1965-11-01), Osborne
patent: 3475122 (1969-10-01), McRae et al.
patent: 3801698 (1974-04-01), Lowrance et al.
General Chemistry, H. H. Sisler, 1949, pp. 410, 470.
General College Chemistry, J. A. Babor et al., 1940, p. 368.
"Hydrochloric Acid", Kirk Othmer Encyclopedia of Chem. Technology, Second Ed., vol. 11, p. 313.

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