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:
Aug. 23, 1977
Filed:
Aug. 27, 1976
Robert G Anderson, San Rafael, CA (US);
Alan E Straus, El Cerrito, CA (US);
John B Wilkes, Richmond, CA (US);
Chevron Research Company, San Francisco, CA (US);
Abstract
In a process for the conversion of normal butane to maleic anhydride at a pressure between about 15 and 100 psig and a temperature above 675.degree. F, by contacting the normal butane with an oxygen-containing gas and an oxidation catalyst disposed in a fixed catalyst bed or set of tubes in a reactor vessel, and withdrawing an effluent comprising unreacted normal butane, oxygen, Co, Co.sub.2, N.sub.2 and maleic anhydride from the catalyst bed or tubes, improvements in yield, product quality and plant operability are obtained by rapidly cooling the effluent gas to a temperature below 675.degree. F. One method of accomplishing this is by contacting the effluent gas with cooling coils contained within the reactor but below the catalyst bed.