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:
Oct. 29, 2009
Hendrikus Wilhelmus Bakkenes, Apeldoorn, NL;
Johannes Albertus Maria Meijer, Schalkhaar, NL;
Allert Schokker, Deventer, NL;
Maria Steensma, Arhnem, NL;
Hendrikus Wilhelmus Bakkenes, Apeldoorn, NL;
Johannes Albertus Maria Meijer, Schalkhaar, NL;
Allert Schokker, Deventer, NL;
Maria Steensma, Arhnem, NL;
Akzo Nobel N.V., Arnhem, NL;
Abstract
The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 0° C. but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i).