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:
Mar. 07, 1989
Filed:
Mar. 23, 1987
Sydney P Andrew, Hartlepool, GB;
Ralph J Doy, Saltburn-by-the-Sea, GB;
Antony P Limbach, Stockton-on-Tees, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
An apparatus for conducting an endothermic catalytic reaction wherein closed ended, i.e., double pass, externally heated reformer tubes are employed. The inner return tube are insulated so that there is only a small temperature drop between the reacted gas leaving the catalyst zone and entering the return tubes and the gas leaving the return tubes. The outer, closed end, tubes preferably have fins to increase the surface area, and are surrounded by sheaths through which a heating medium passes. The heating medium is preferably hot gas obtained by subjecting the primary reformed gas to secondary reforming.