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. 12, 1989
Filed:
Sep. 24, 1987
Peter J Carnell, Stockton-on-Tees, GB;
Warwick Lywood, Yarm, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
Desulphurization of a feedstock using a regenerable sorbent to give a desulphurized stream, regeneration of the sorbent by heating, feedstock, and during at least the initial part of the cooling, at least part of the effluent from the sorbent is contacted with a non-regenerable particulate sorbent. The desired desulphurized product comprises the effluent from the regenerable sorbent that has bypassed the particulate sorbent. Preferably the heat for regeneration is obtained by heat exchange with the products of combustion of the sulphur laden regeneration fluid. In an alternative process using a particulate sorbent for a 'polishing' operation, the regenerable sorbent is replaced by a membrane separation unit giving a desulphurized stream and a sulphur laden stream, which is combusted to heat, by heat exchange, the desulphurized stream before it passes through the particulate sorbent.