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:
Nov. 18, 2014
Filed:
Feb. 22, 2012
Lisa Edith Helberg, Middletown, DE (US);
Lisa Edith Helberg, Middletown, DE (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present disclosure relates to reacting tin metal with crude TiClcontaining arsenic to produce pure TiCl, SnCl, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. In another embodiment, the vanadium is removed separately through a commercial process and the resulting arsenic containing commercial grade of purified TiClis reacted with elemental tin, sulfur and ferric chloride to substantially reduce the arsenic. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiClproduced and simultaneously yield a purified SnClproduct. The synthesis of SnClin this method utilizes waste chloride to save virgin chlorine which would otherwise be used.