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:
Oct. 23, 1990
Filed:
Nov. 20, 1989
Glenn A Clausen, Nederland, TX (US);
Karen A Kuhn, Port Arthur, TX (US);
Kathryn P Weldon, Sour Lake, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
In a ebullated bed process, a residual hydrocarbon oil is hydrotreated at a reaction temperature of 750.degree. F. to 875.degree. F. and pressure of 1500 psig to 10,000 psig in a single or multiple reaction zone. A sample of hydrotreated liquid effluent is flash separated to obtain a nominal 650.degree. F.+ liquid which is magnified to 100.times.. Area precent, average diameter and maximum size of insoluble agglomerates is measured from the magnified view. Reactor temperature is varied with the area percent, average diameter and maximum size of insoluble agglomerates to control downstream sediment formation and plug formation at an acceptable level.