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:
Sep. 01, 1981
Filed:
Oct. 05, 1979
Applicant:
Inventors:
Kenneth R Burcaw, Jr, Easton, PA (US);
Robert E Watkins, Jr, Bethlehem, PA (US);
Assignee:
Bethlehem Steel Corporation, Bethlehem, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 48 ; 55 49 ; 55 53 ; 55 85 ; 55 89 ; 201 29 ; 585833 ; 585867 ; 233 29 ;
Abstract
A bleed stream from the recirculating wash oil in a final cooling system for coke oven gas is centrifugally separated into a waste water stream, a sludge stream and a clean, dry oil stream which is substantially free of solids and has a water content less than 0.5% (wt.). The clean, dry oil stream is heated to less than about 160.degree. C., preferably 125.degree.-135.degree. C., before entering a naphthalene stripper-wash oil still.