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(19)

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2 601 007

(13)

(51)

IPC

C01B7/19(2006-01-01)

C01B3/06(2006-01-01)

C10J3/00(2006-01-01)

(21) (22)

Application

2013148298/05, 2013-10-29

(24)

Start date

2013-10-29

(22)

Actual filing date

2013-10-29

(45)

Published

2016-10-27

(72)

Inventor

Petrov Valentin BorisovichPashkevich Dmitrij StanislavovichMukhortov Dmitrij AnatolevichAlekseev Yurij Ivanovich

(73)

Holder

Obshshestvo S Ogranichennoj Otvetstvennostyu Khimicheskie Produkty"

METHOD OF EXTRACTING HYDROGEN FLUORIDE FROM AQUEOUS SOLUTIONS Russian patent published in 2016 - IPC C01B7/19 C01B3/06 C10J3/00

Abstract RU 2601007 C2

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. Method of extracting hydrogen fluoride from its aqueous solutions involves reduction of water with carbon at high temperature. Pre-evaporated or sprayed mixture of hydrogen fluoride and water is brought into contact with carbon, heated to over 1,000 K, in weight ratio water: carbon from 1:0.5 to 1:2. Produced gaseous hydrogen fluoride and water vapour are condensed and rectified, anhydrous hydrogen fluoride is extracted. Azeotropic mixture is fed for recycling. Uncondensed gases are neutralised and recycled.

EFFECT: invention enables to extract hydrogen fluoride from its aqueous mixtures, including hard-to-separate azeotropic mixtures, and obtain anhydrous hydrogen fluoride and/or concentrated hydrofluoric acid.

1 cl, 1 dwg, 1 tbl, 8 ex

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RU 2 601 007 C2

Authors

Petrov Valentin Borisovich

Pashkevich Dmitrij Stanislavovich

Mukhortov Dmitrij Anatolevich

Alekseev Yurij Ivanovich

Dates

2016-10-27—Published

2013-10-29—Filed