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:
Sep. 11, 2018
Filed:
Dec. 01, 2017
Applicant:
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Inventors:
Zezhou Chen, Beijing, CN;
Zhenyu Liu, Beijing, CN;
Qingya Liu, Beijing, CN;
Lei Shi, Beijing, CN;
Teng Xu, Houston, TX (US);
Assignee:
Exxon Mobil Chemical Patents Inc., Baytown, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G 45/72 (2006.01); C10G 75/00 (2006.01); C10G 47/36 (2006.01);
U.S. Cl.
CPC ...
C10G 45/72 (2013.01); C10G 47/36 (2013.01); C10G 75/00 (2013.01); C10G 2300/201 (2013.01);
Abstract
A process is provided for determining the suitability of pyrolysis tar, such as steam cracker tar, for upgrading using hydroprocessing without long term fouling of the hydroprocessing reactor. The process includes heating a sample of the tar, quenching the sample, and measuring the total free radical content of the quenched sample. A pyrolysis tar can be blended with one having a lesser total free radical content to produce a blend that can be hydroprocessed with decreased fouling.