Waste liquid-free processing of chlorosilane distillation residu

Details Waste liquid-free processing of chlorosilane distillation residu Waste liquid-free processing of chlorosilane distillation residu

1990-11-30

1992-01-14

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210751, 210770, 423335, 423342, C02F 1114, C01B 3136

Patent

active

050808044

ABSTRACT:
Residues which are obtained from the distillation of chlorosilanes prepared by reaction of raw silicon with chlorine or hydrogen chloride are processed by treatment in aqueous phase with an excess of at least 15% of calcium carbonate, and the liquid components are recycled into the process so that no liquid waste is formed.

REFERENCES:
patent: 4350597 (1982-09-01), Selm et al.
patent: 4390510 (1983-06-01), Ritzer et al.
patent: 4404105 (1983-09-01), Rysmon de Locerente et al.
patent: 4519999 (1985-05-01), Coleman et al.
patent: 4690810 (1987-09-01), Brenemon et al.
patent: 4892694 (1990-01-01), Ritzer et al.

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