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:
Dec. 25, 2018
Filed:
Mar. 09, 2016
Applicant:
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Inventors:
David B. Spicer, Houston, TX (US);
Philippe J. Le Roy, Singapore, SG;
George Stephens, Huffman, TX (US);
Assignee:
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 9/20 (2006.01); C07C 4/04 (2006.01); C10G 9/36 (2006.01); F27B 1/28 (2006.01); F23N 5/24 (2006.01);
U.S. Cl.
CPC ...
C10G 9/206 (2013.01); C07C 4/04 (2013.01); C10G 9/36 (2013.01); F23N 5/245 (2013.01); F27B 1/28 (2013.01); C10G 2300/1081 (2013.01); C10G 2400/20 (2013.01); F23J 2213/70 (2013.01);
Abstract
A method and apparatus of reducing thermal shock in one or more radiant tubes of a pyrolysis furnace is provided. The apparatus is a furnace comprising a blower and blower bypass conduit providing separate fluid communication paths for flue gas from the convection section to a natural draft flue gas stack. The method comprises the steps of: redirecting at least a portion of the flue gas through the blower bypass conduit when a blower shut-off event is indicated as well as reducing the firing rate of the furnace.