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7. Tail gas treatment
On leaving the Claus unit, after conversion of the H 2 S in the acid gas into sulfur, the gas cannot be released into the atmosphere or sent to the incinerator without additional treatment, due to the residual H 2 S content and the presence of SO 2 from the first stage of the Claus reaction, which converts H 2 S into SO 2 by oxidation. H 2 S and SO 2 contents are a few hundred ppmv, although these can be reduced by implementing Superclaus-type technology. The standard relating to the limitation of discharges into the atmosphere imposes a limit value of 35 mg/m ...
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Tail gas treatment
Bibliography
Websites
CEDIGAZ http://www.cedigaz.org
Regulations
Order of 06/27/90, JO n° 191 of August 19, 1990
Patents
CLAUS C.F., British Patent n° 5958
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
AXENS http://www.axens.net
PROSERNAT http://www.prosernat.com
TECHNIP http://www.technip.com
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The Ultimate Scientific and Technical Reference