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2 381 177

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(51)

IPC

C01D7/18(2006-01-01)

C01D7/42(2006-01-01)

(21) (22)

Application

2007135924/15, 2007-09-27

(24)

Start date

2007-09-27

(22)

Actual filing date

2007-09-27

(45)

Published

2010-02-10

(72)

Inventor

Belkin Anatolij Vasil'EvichUtopova Marija ViktorovnaFal'Kovskij Nikolaj NikolaevichKovyrzin Jurij ValentinovichZakoptelov Valerij Evgen'Evich

(73)

Holder

Oao Sodovyj Zavod"

METHOD FOR PRODUCTION OF SODA ASH BY AMMONIAC METHOD Russian patent published in 2010 - IPC C01D7/18 C01D7/42

Abstract RU 2381177 C2

FIELD: technological processes.

SUBSTANCE: invention may be used in chemical industry. Method for production of soda ash by ammoniac method includes preparation and treatment of saturated brine of sodium chloride, preparation of ammoniated brine, its cooling, carbonisation of ammonia-saturated brine with extraction of sodium hydrocarbonate, filtration with further washing and calcination. Washing of hydrocarbonate residue is carried out with aqueous solution of ionogenic surfactant based on alkylbenzyldimethylammonia chloride, where alkyl is C_12-14, C_10-16, C_16-18, with concentration of surfactant in washing water of 0.005-0.02 % and soda ash consumption of 0.045-0.18 kg/t.

EFFECT: invention makes it possible to reduce energy inputs at the stage of calcinations due to reduction of sodium hydrocarbonate moisture.

2 tbl, 1 ex

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RU 2 381 177 C2

Authors

Belkin Anatolij Vasil'Evich

Utopova Marija Viktorovna

Fal'Kovskij Nikolaj Nikolaevich

Kovyrzin Jurij Valentinovich

Zakoptelov Valerij Evgen'Evich

Dates

2010-02-10—Published

2007-09-27—Filed