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. 08, 1979
Filed:
Mar. 20, 1978
Robert E Leonard, Oklahoma City, OK (US);
Donald E Rhodes, Oklahoma City, OK (US);
Kerr-McGee Corporation, Oklahoma City, OK (US);
Abstract
A process for maintaining the fluid-like properties of a heavy phase being withdrawn from a separation zone maintained at elevated temperature and pressure during periods in which the flow of this heavy phase is terminated due to pressure reduction valve plugging or to permit cleaning of downstream processing apparatus. When the flow of withdrawn heavy phase is interrupted, deashed coal is melted, if necessary, and introduced under pressure into the withdrawal conduit to mix with the heavy phase therein. The mixture of deashed coal and heavy phase retains the fluid-like properties exhibited by the heavy phase and flow can be resumed once the downstream apparatus is repaired. Alternatively, other high-boiling aromatic materials may be used instead of the deashed coal.