The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2017
Filed:
Mar. 19, 2014
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Sebastian Liebischer, Muehldorf, DE;
Daniel Braeunling, Munich, DE;
Daniel Gaess, Burghausen, DE;
Jeffery Thompson, Grandview, TN (US);
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 1/00 (2006.01); C02F 1/04 (2006.01); C02F 1/38 (2006.01); C01B 33/107 (2006.01); C02F 1/66 (2006.01); C02F 9/00 (2006.01); C02F 101/12 (2006.01);
U.S. Cl.
CPC ...
C02F 1/048 (2013.01); B01D 1/00 (2013.01); B01D 1/0041 (2013.01); C01B 33/107 (2013.01); C01B 33/10778 (2013.01); C02F 1/38 (2013.01); C02F 1/66 (2013.01); C02F 9/00 (2013.01); C02F 1/385 (2013.01); C02F 2101/12 (2013.01); C02F 2209/06 (2013.01);
Abstract
Chlorosilane-containing process streams are treated by vaporizing the process stream, contacting the vaporized process stream with an alkaline medium in a scrubber, the scrubbing liquid being maintained at a pH of 9-13 by introduction of alkaline medium, and feeding the scrubbing medium to a waste treatment plant containing at least one mixing tank in which the pH is adjusted to the range of 7-9 by addition of mineral acid, separating solids by means of a centrifuge, and isolating separated solids.