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:
Jan. 18, 1994
Filed:
Sep. 18, 1992
Applicant:
Inventor:
Humbert H Chu, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210751 ; 210770 ;
Abstract
A process for the removal of hydrocarbons from contaminated oily solids performed under atmospheric conditions by utilizing a single processing zone wherein multiple processing steps are carried out to remove contaminants. The steps include loading contaminated oily solids into a zone where the solids are reduced in size, dewatering or deoiling the oily solids, drying the resulting solids to remove moisture and volatile organics, extracting the resulting dried solid with organic solvent and further drying the extracted resulting dried solid to remove residual moisture, volatile organics and residual solvent, and fixing the metals.