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:
Jun. 11, 2019
Filed:
Nov. 20, 2017
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Gary F. Janda, Houston, TX (US);
David B. Spicer, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
A steam cracking process for converting hydrocarbons into smaller hydrocarbons, particularly olefins, in a tube reactor comprising a convection section, a cross-over section, and a radiant section. The process includes heating the fluid mixture inside the tube to a temperature at the end of the convection section where significant cracking occurs in the cross-over section. The high convection section and cross-over section temperatures allow for lower tube wall temperature in the radiant section resulting in less coke deposition on the inner wall of the tube, and hence extended run-lengths between adjacent decoking sessions.