Catalytic processes and catalysts for production of elemental sulfur from sulfur-containing gases |
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Authors: | A N Zagoruiko V V Shinkarev S V Vanag G A Bukhtiyarova |
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Affiliation: | 1.Boreskov Institute of Catalysis, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia |
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Abstract: | The modern technologies for production of elemental sulfur are considered. It is demonstrated that along with the further
wide application of the conventional Claus process with conventional alumina catalyst in the observable future some new trends
which may significantly influence the technological picture of recovered sulfur manufacturing may be formulated: active development
of Claus tail gas cleanup processes with the stress on replacement of subdewpoint Sulfreen-type processes by processes of
hydrogen sulfide selective oxidation by oxygen; development of novel highly-efficient technologies for hydrogen sulfide decomposition
to sulfur and hydrogen; application of new catalysts forms, first of all — at microfiber supports for Claus and H2S oxidation processes; wider application of titania and vanadia catalysts at the newly constructed Claus units; development
of technologies and catalysts for direct purification of H2S-containing gases and for catalytic reduction of SO2 for sulfur recovery from smelter gases. All these prospective routes are actively developed by Russian science and some of
them are completely based on domestic developments in this area. |
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