METHOD AND APPARATUS FOR REMOVING SULFUR COMPOUND IN GAS CONTAINING HYDROGEN SULFIDE, MERCAPTAN, CARBON DIOXIDE AND AROMATIC HYDROCARBON

WIPO Patent Application WO/2002/032810

A1

A method and an apparatus for removing sulfur compounds such as H¿2?S and mercaptan contained in an impurity gas accompanying natural gas or the like through recovering them as sulfur as a simple substance, characterized in that it comprises a step of separating the impurity gas form the natural gas or the like, a condensation step of separating the impurity gas into a condensed gas comprising H¿2?S as a main component and a residual gas comprising mercaptan and CO¿2? as main components, a step of subjecting the condensed gas to a Claus reaction process to recover H¿2?S as simple sulfur, a step of heating the off-gas from the Claus reaction process to a temperatre of 700 C or less and mixing the heated off-gas with the above residual gas, a step of subjecting the resultant mixed gas to a desulfurization process to convert sulfur compounds such as mercaptan to H¿2?S by using a reduction catalyst, and a step of separating the H¿2?S and recycling it to the above Claus reaction process.

JPH08503651	INDUSTRIAL APPLICABILITY: A method for removing sulfur dioxide from a sulfur dioxide-containing gas stream.
WO/2010/045705	METHOD FOR REMOVING SULFUR FROM A GAS STREAM

ISHIGAKI SHINYA (JP)
KIDA MITSURU (JP)
SASAKI TAKASHI (JP)

PCT/JP2000/007212

April 25, 2002

October 18, 2000

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JGC CORP (JP)
ISHIGAKI SHINYA (JP)
KIDA MITSURU (JP)
SASAKI TAKASHI (JP)

C01B17/04; C10L3/10; (IPC1-7): C01B17/04

JPH1028837A	1998-02-03
JPH08290904A	1996-11-05
JPS60258294A	1985-12-20

See also references of EP 1338557A4

Shiga, Masatake (Takadanobaba 3-chome Shinjuku-ku Tokyo, JP)

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