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2 094 364

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C1

(51)

IPC

(21) (22)

Application

93057367/25, 1993-12-24

(22)

Actual filing date

1993-12-24

(45)

Published

1997-10-27

(72)

Inventor

Bojarkina N.M.Krjuchkov V.V.Parkhamovich E.S.

(73)

Holder

Aktsionernaja Firma

METHOD OF PROCESSING SULFURIC ACID TO ALUMINIUM SULFATE Russian patent published in 1997 - IPC

Abstract RU 2094364 C1

FIELD: chemical technology, inorganic chemistry. SUBSTANCE: spent sulfuric acid from production of sulfocationite KU-2-8 containing 0.5-1.5% organic impurities and dichloroethane is mixed with aluminium hydroxide-containing compound at 95-115 C. Organic impurities were crystallized as aluminium salt with aluminium sulfate and the evolved dichloroethane is recovered to production of sulfocationite. The obtained aluminium sulfate is used as coagulating agent for natural and sewage water treatment. EFFECT: improved method of processing. 1 tbl

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RU 2 094 364 C1

Authors

Bojarkina N.M.

Krjuchkov V.V.

Parkhamovich E.S.

Dates

1997-10-27—Published

1993-12-24—Filed

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