APPARATUS AND METHOD FOR PREPARING SODIUM HYDROGEN SULFIDE

WIPO Patent Application WO/2012/102491

A2

According to the present invention, provided is an apparatus for preparing sodium hydrogen sulfide, comprising: a first reactor in which a two-stage filling column is provided inside, hydrogen sulfide is supplied to a lower end, sodium hydroxide is supplied to an upper end, and said hydrogen sulfide reacts with said sodium hydroxide through the two-stage filling column to generate a first sodium hydrogen sulfide; and a second reactor in which a two-stage filling column is provided inside, hydrogen sulfide remaining after the reaction at the first reactor is supplied to a lower end, sodium hydroxide is supplied to an upper end, and said hydrogen sulfide reacts with said sodium hydroxide through the two-stage filling column to generate a second sodium hydrogen sulfide, wherein the second sodium hydrogen sulfide is returned from the second reactor to the first reactor to allow the first sodium hydrogen sulfide and the second sodium hydrogen sulfide to be collected from the first reactor, sodium hydroxide remaining after the reaction at the first reactor is resupplied to the first reactor, and sodium hydroxide remaining after the reaction at the second reactor is resupplied to the second reactor.

JANG SANGYONG (KR)

PCT/KR2011/010402

August 02, 2012

December 30, 2011

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ISU CHEMICAL CO LTD (KR)
JANG SANGYONG (KR)

C01B17/22; B01D53/78; B01J10/00

JP2796746B2	1998-09-10
JPH1135307A	1999-02-09
JP2579533B2	1997-02-05
US4439411A	1984-03-27

YOU ME PATENT AND LAW FIRM (KR)
유미특허법인 (KR)

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