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:
May. 16, 1989
Filed:
Aug. 03, 1987
Applicant:
Inventors:
James C Nowak, Kent, WA (US);
Mark K Tose, Maple Valley, WA (US);
Assignee:
Resources Conservation Company, Bellevue, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210639 ; 210708 ; 210709 ; 210737 ; 252344 ; 252358 ;
Abstract
A method for using alkali for recovering amine used in a process for breaking emulsions and sludges. The amine has an inverse critical solution temperature with water. The process breaks a sludge into a water component containing residual amine and oil component if oil is present in the original sludge, and a solid matter component. The present invention uses alkali to minimize the amount of amine lost in the water component and in the solid matter component.