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. 25, 1976
Filed:
May. 01, 1974
Masaki Kondo, Tokyo, JA;
Sumitomo Shipbuilding & Machinery Co., Ltd., Tokyo, JA;
Abstract
A method of obtaining a refined oil product from low-grade oils containing a relatively large amount of water and/or sludge, which comprises the steps of introducing a low-grade oil directly into a fluidized bed type cracking furnace and subjecting it to thermal cracking therein, introducing the resulting efflux from said cracking furnace into a fractionation column and therein separating it into an overhead light vapor component which is removed from the top of said column and a heavy component which is recovered from the bottom of said column, cooling the overhead light vapor component and then feeding it into a gas-liquid separator to divide it into a vapor-phase stream and a liquidphase stream, and circulating a part of said liquid-phase stream to the top of the fractionation column as reflux while recovering the balance of the liquid-phase stream as the refined oil product.