METHOD OF PRODUCING GYPSUM

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United States of America Patent

SERIAL NO

09138365

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Abstract

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After hydrogenation and desulfurization treatment of raw fuel in the desulfurization unit 1, the product is separated in the acidic gas separator 2 into fuel and a hydrogen sulfide-containing gas, and the hydrogen sulfide-containing gas is subjected to combustion together with air in the catalyst converter 3 thereby converting the hydrogen sulfide completely into sulfur dioxide to give a sulfur dioxide-containing gas, and this sulfur dioxide-containing gas is reacted with limestone powder and air in water in the oxidation and neutralization reactor 4, and the resulting slurry is dehydrated in the gypsum slurry solid/liquid separator 5 and then dried in the gypsum heater 6.

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Patent Owner(s)

Patent OwnerAddress
TAIICHIRO SUDANot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FUJII, NAGATOSHI OSAKA-SHI, JP 2 9
IIJIMA, MASAKI TOKYO, JP 130 2111
KAWASAKI, MASAMI OSAKA-SHI, JP 20 400
MORIGUCHI, YOSHIKO OSAKA-SHI, JP 2 9
SERA, TOSHIKUNI HIROSHIMA-SHI, JP 11 134
SUDA, TAIICHIRO OSAKA-SHI, JP 11 467

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