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:
Mar. 18, 2014
Filed:
Oct. 20, 2010
Stacey E. Siporin, Fairfax, VA (US);
David Thomas Ferrughelli, Flemington, NJ (US);
Steven S. Lowenthal, Flanders, NJ (US);
Randolph J. Smiley, Hellertown, PA (US);
Alan Roy Katritzky, Gainesville, FL (US);
Bruce R. Cook, Aurora, IL (US);
Stacey E. Siporin, Fairfax, VA (US);
David Thomas Ferrughelli, Flemington, NJ (US);
Steven S. Lowenthal, Flanders, NJ (US);
Randolph J. Smiley, Hellertown, PA (US);
Alan Roy Katritzky, Gainesville, FL (US);
Bruce R. Cook, Aurora, IL (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
A method for the removal of nitrogen compounds from FCC feed or from catalytically cracked distillates including FCC cycle oils by using formaldehyde to selectively couple organic heterocyclic nitrogen species in the FCC feed or FCC distillate to form higher boiling coupling products out of the boiling range of FCC distillate. Removal of the nitrogenous compounds improves the operation of subsequent hydrodesulfurization steps needed for the distillate fraction to conform to low sulfur standards. The formaldehyde is preferably used in the form of paraformaldehyde. The reaction between the nitrogenous compounds in the cycle oil fraction with the formaldehyde is conveniently carried out in the cycle oil pumparound circuit of the FCC main column.