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:
Jun. 11, 1991
Filed:
Apr. 10, 1989
Applicant:
Inventors:
Donald B Loftis, Cleveland, TN (US);
David D Justice, Cleveland, TN (US);
Assignee:
Olin Corporation, Cheshire, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364497 ; 210687 ; 210739 ; 364500 ; 364502 ;
Abstract
A process to control the addition of excess carbonate to brine systems is provided wherein the process measures the raw brine flow rate through the carbonate reactors, the concentration of calcium in the brine feeding the reactors and the concentration of carbonate in the sodium carbonate feed tank to calculate the quantity of sodium carbonate necessary to remove substantially all of the calcium impurity in the brine by precipitating it out as a calcium carbonate flocculant. The process is automated and employs an information feed forward system.