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:
Nov. 13, 1984
Filed:
Jul. 29, 1983
Boyd E Cabanaw, Tulsa, OK (US);
Standard Oil Company (Indiana), Chicago, IL (US);
Abstract
A three catalytic reactor system and process is disclosed for obtaining acceptable levels of sulfur recovery from acid gas at a cost significantly less than that required for a standard four reactor cold bed adsorption (CBA) system. The system and process of the present invention utilizes two conventional Claus reactors and one cold bed adsorption (CBA) reactor in series. Four condensers are provided, one disposed before each of the catalytic reactors, and one on a process line connecting the third catalytic (CBA) reactor to the first catalytic (Claus) reactor. The system is designed to operate either in an adsorption mode or in a regeneration mode. In the adsorption mode, the system is similar to a standard CBA system except that the present invention incorporates only one CBA reactor while a standard CBA system incorporates two CBA reactors. In the regeneration mode, however, the CBA reactor of the present invention is operated in the same manner as the first Claus reactor in adsorption mode. Heated gas downstream of the thermal reactor is used to regenerate the CBA reactor. The effluent from the regenerated CBA reactor is directed through a heater and then to the first Claus reactor.