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:
Jul. 03, 2007
Filed:
Dec. 23, 2002
Applicant:
Danny Yuk-kwan Ngan, Houston, TX (US);
Inventor:
Danny Yuk-Kwan Ngan, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07G 4/04 (2006.01); C10G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process and apparatus for determining the hydrogen-to-carbon ratio of the liquid fraction of a pyrolysis product by determining the hydrogen-to-carbon ratio of the pyrolysis product gas fraction and subtracting the thus determined value from the determined hydrogen-to-carbon of the hydrocarbon feed to the pyrolysis furnace. The determined value for the hydrogen-to-carbon ratio of the liquid fraction is used as a measure of cracking severity and in the control of the pyrolysis furnace in response to differences between the desired and actual hydrogen-to-carbon ratio of the liquid fraction.