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. 04, 2022
Filed:
Dec. 21, 2017
Applicant:
Axens, Rueil Malmaison, FR;
Inventor:
Nicolas Pupat, Houilles, FR;
Assignee:
AXENS, Rueil Malmaison, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 47/00 (2006.01); C10G 55/08 (2006.01); B01D 3/06 (2006.01); B01D 3/38 (2006.01); B01D 3/34 (2006.01); C10G 49/22 (2006.01); B01D 3/14 (2006.01); C10G 7/06 (2006.01); C10G 47/24 (2006.01);
U.S. Cl.
CPC ...
C10G 55/08 (2013.01); B01D 3/06 (2013.01); B01D 3/143 (2013.01); B01D 3/343 (2013.01); B01D 3/38 (2013.01); C10G 7/06 (2013.01); C10G 47/00 (2013.01); C10G 47/24 (2013.01); C10G 49/22 (2013.01); C10G 2300/1096 (2013.01); C10G 2300/202 (2013.01); C10G 2400/02 (2013.01); C10G 2400/06 (2013.01); C10G 2400/16 (2013.01); C10G 2400/30 (2013.01);
Abstract
In the hydrocracking process in accordance with the invention, which comprises a hydrocracking section, a high pressure hot separator and a fractionation section, upstream of the fractionation section, a stripper or reboiler column type separation column is added which treats at least a portion of the heavy effluent obtained from the high pressure hot separator. All or a portion of the bottom fraction from said column, which is rich in polynuclear aromatic compounds, is purged. At least a portion of the bottom fraction obtained from the fractionation section, which is constituted by unconverted products, is recycled to the reaction section.