C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/332
C01B 17/04 (2006.01)
Patent
CA 2035554
-13- ABSTRACT An H2S-containing feed gas is partly combusted with an oxygen-containing gas in a combustion chamber of a Claus process plant so that a gas mixture is formed which contains H2S and SO2, which are reacted to produce elementary sulfur. The gas mixture leaving the combustion chamber is reacted in one or more cata- lytic processing stages and optionally in aftertreating means. The concentrations of H2S and SO2 are measured upstream or downstream of one of the catalytic proces- sing states or upstream or downstream of the after- treating means or in such aftertreating means. The rate at which the feed gas enters the combustion chamber and the rate of supply of the oxygen-containing gas to the combustion chamber are also measured. A controller is used to calculate from the values thus measured the rate at which the oxygen-containing gas is to be supplied to the combustion chamber in order to minimize the content of sulfur compounds in the exhaust gas.
Lell Rainer
Metallgesellschaft Aktiengesellschaft
Robic
LandOfFree
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