Production of hydrochloric acid

Details Production of hydrochloric acid Production of hydrochloric acid

C - Chemistry, Metallurgy

01

B

23/181

C01B 7/03 (2006.01) C01B 33/24 (2006.01) C04B 14/04 (2006.01) C04B 18/04 (2006.01)

Patent

CA 1112425

ABSTRACT A method for the production of HC1 comprises heating calcium chloride with a molar excess of SiO2 having a surface area of at least 15m2/gm at a tem- perature in excess of 600°C in the presence of water vapour, suitably in a fluidized bed reactor. Silica residues from acid processes, and calcium chloride waste, may advantageously be used. By-product CaSiO3 is also useful for thermal insulation.

312849

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