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, 2008
Filed:
Feb. 21, 2002
Baruch Grinbaum, Kiriat Tivon, IL;
Leni Kogan, Kiriat Haim, IL;
Eli Barnea, Haifa, IL;
Gideon Harel, Kiriat Tivon, IL;
Rafael Semiat, Haifa, IL;
Samuel Wahrmann, Haifa, IL;
Baruch Grinbaum, Kiriat Tivon, IL;
Leni Kogan, Kiriat Haim, IL;
Eli Barnea, Haifa, IL;
Gideon Harel, Kiriat Tivon, IL;
Rafael Semiat, Haifa, IL;
Samuel Wahrmann, Haifa, IL;
Bromine Compounds Limited, , IL;
Abstract
A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.