Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Reexamination Certificate
2007-11-20
2007-11-20
Vanoy, Timothy C. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
C502S038000, C502S039000, C423S576200, C423S576500, C423S576600
Reexamination Certificate
active
11446021
ABSTRACT:
The invention relates to a process for removing sulfur particles from an aqueous catalyst solution used to remove hydrogen sulfide from a gas stream (1, 5), comprising the steps of directing a flow of a suspension (12) comprising reduced catalyst solution and sulfur particles to an oxidizer zone (20), where the catalyst solution is regenerated by contacting said suspension with a gas (22) containing oxygen; and removing sulfur from said suspension at least by gravity sedimentation at a bottom (21) of said oxidizer zone (20). According to the invention a flow deflecting means (34) is disposed at least at an outlet (35) for the oxidized catalyst solution leaving said oxidizer zone (20) such as to prevent any turbulent state caused at least by a stream of oxidized catalyst solution leaving said oxidizer zone (20).
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I. Iliuta, F. Larachi, “Concept of Bifunctional Redox Iron-Chelate Process for H2S Removal In Pulp and Paper Atmospheric Emissions,” Sep. 9, 2003, pp. 5305-5314, Chemical Engineering Science.
Forsat Khaled
Hashemi Reza
Khattaty Mohammad Reza
Manafi Varkiani Hossein
Kenyon & Kenyon LLP
Research Institute of Petroleum Industry
Vanoy Timothy C.
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