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. 25, 2001
Filed:
Jul. 07, 2000
Applicant:
Inventors:
Alan D. Eastman, Bartlesville, OK (US);
Ronald E. Brown, Bartlesville, OK (US);
Assignee:
Chevron Phillips Chemical LP, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 9/16 ; C01G 7/504 ;
U.S. Cl.
CPC ...
C01G 9/16 ; C01G 7/504 ;
Abstract
A process is provided by the invention which comprises: (a) providing a tubular reactor having an inlet and an outlet, a furnace for heating the reactor, and a cooler having an inlet in communication with the reactor outlet and also having an outlet; (b) introducing a substantially constant flow of feed gas comprising steam to the reactor inlet while the reactor is heated by the furnace to produce a predetermined and substantially constant reactor outlet temperature; and (c) controlling, during at least a portion of (b), the concentration of an antifoulant in the feed gas based on cooler outlet temperature.