Method for producing chlorosilanes

US11845667B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Karl-Heinz Rimboeck · Heldenstein, DE
• Natalia Sofina · Burghausen, DE

Key dates

• Filing date: Apr 18, 2018
• Grant date: Dec 19, 2023
• Expiry date: Feb 27, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B29/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Chlorosilanes of the general formula HnSiCl4-n and/or HmCl6-mSi2, where n=1-4 and m=0-4, are produced in a fluidized bed reactor by reaction of a hydrogen chloride-containing reaction gas with a silicon contact mass granulation mixture composed of a coarse grain fraction and a fine grain fraction, wherein the average particle size of the fine grain fraction d50,fine is smaller than the average particle size of the coarse grain fraction d50,coarse.