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. 21, 1986
Filed:
Dec. 14, 1984
Applicant:
Inventor:
Howard R Herrigel, Seattle, WA (US);
Assignee:
Resources Conservation Co., Bellevue, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210652 ; 210714 ;
Abstract
A method for ensuring an adequate amount of seed crystal in solution concentration systems employing preferential precipitation to control scaling and fouling over relatively low concentration factors. In systems concentrating solutions at concentration factors between 1 and 2, the method comprises determining the minimum amount of seed crystal necessary for the solution being concentrated at a concentration factor of about 10 or greater and introducing into the feeds solution a percentage of this amount according to the equation, % introduced=25.times.(C.F.).times.(C.F..sub.MAX /C.F..sub.MAX -1).