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. 04, 2010
Filed:
Jul. 01, 2005
Glen Brons, Phillipsburg, NJ (US);
Leo D. Brown, Baton Rouge, LA (US);
Himanshu Joshi, Chester, NJ (US);
Raymond J. Kennedy, Hampton, NJ (US);
Tom Bruno, Raritan, NJ (US);
Thomas M. Rudy, Warrenton, VA (US);
Glen Brons, Phillipsburg, NJ (US);
Leo D. Brown, Baton Rouge, LA (US);
Himanshu Joshi, Chester, NJ (US);
Raymond J. Kennedy, Hampton, NJ (US);
Tom Bruno, Raritan, NJ (US);
Thomas M. Rudy, Warrenton, VA (US);
ExxonMobil Research & Engineering Company, Annandale, NJ (US);
Abstract
The present invention is a method to identify a refinery solid foulant of unknown composition including the following steps: obtaining a solid foulant sample, removing trapped feed from the sample with a solvent to obtain an insoluble sample, scanning the insoluble sample with a scanning electron microscope and energy dispersive x-rays, performing a thermal gravimetric analysis including an ash test on the insoluble sample to determine the presence of polymer, coke and inorganic elements, performing an elemental analysis on the insoluble sample for the elements carbon, hydrogen, sulfur, nitrogen, halogens, and metals, performing an optical microscopy on the insoluble sample to determine the presence of wax, asphaltenes, anisotropic coke and isotropic coke, and identifying the solid foulant.