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:
May. 18, 2021
Filed:
Nov. 16, 2018
Applicant:
Tokuyama Corporation, Yamaguchi, JP;
Inventors:
Kenji Hirota, Yamaguchi, JP;
Katsuya Ogihara, Yamaguchi, JP;
Assignee:
TOKUYAMA CORPORATION, Yamaguchi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 8/00 (2006.01); B01J 8/18 (2006.01); B01J 8/24 (2006.01); C01B 3/00 (2006.01); C01B 3/08 (2006.01); C01B 33/107 (2006.01);
U.S. Cl.
CPC ...
B01J 8/24 (2013.01); B01J 8/1827 (2013.01); B01J 8/1872 (2013.01); C01B 33/10736 (2013.01); B01J 2208/00548 (2013.01);
Abstract
A fluidized-bed reactor (A) includes a reaction vessel (A) configured to contain metallurgical grade silicon powder and a hydrogen chloride gas, and a portion of a side wall (w) which portion extends along at least 80% of a height extending from a gas feed opening (), which is provided in a lower part of the reaction vessel (A), to a top face of a fluid bed () has such a tapered shape that a cross section of the reaction vessel (A) which cross section is taken perpendicular to a height direction of the reaction vessel (A) increases in area in an upward direction.