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(19)

(11)

2 550 189

(13)

(51)

IPC

C02F1/72(2006-01-01)

C02F1/78(2006-01-01)

C02F1/66(2006-01-01)

A62D3/38(2007-01-01)

A62D101/45(2007-01-01)

C02F101/18(2006-01-01)

C02F103/06(2006-01-01)

C02F103/16(2006-01-01)

(21) (22)

Application

2013156772/05, 2013-12-20

(24)

Start date

2013-12-20

(22)

Actual filing date

2013-12-20

(45)

Published

2015-05-10

(72)

Inventor

Krylova Ljubov' NikolaevnaSergeeva Irina Artem'EvnaKrylov Nikolaj Vladimirovich

(73)

Holder

Federal'Noe Gosudarstvennoe Avtonomnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Issledovatel'Skij Tekhnologicheskij Universitet

METHOD FOR DEACTIVATING CYANO-CONTAINING SOLUTIONS AND PULPS Russian patent published in 2015 - IPC C02F1/72 C02F1/78 C02F1/66 A62D3/38 A62D101/45 C02F101/18 C02F103/06 C02F103/16

Abstract RU 2550189 C1

FIELD: chemistry.

SUBSTANCE: method consists in mixing cyano-containing solutions and pulps with hydrogen peroxide and a gas ozone-oxygen mixture with the ozone concentration of more than 160 g/m³, in the ozone/hydrogen peroxide ratio of 1.5:1, pH 11-12, temperature of 45-50°C in the presence of copper ions. The cyano-containing solutions and pulps are deactivated in the copper ion concentration of not less than 1:8 to the cyanide and rhodanide concentration.

EFFECT: higher rate and effectiveness of deactivating the cyano-containing solutions and pulps, lower consumption of agents and power costs, improved economical efficiency of the process.

2 cl, 2 ex

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RU 2 550 189 C1

Authors

Krylova Ljubov' Nikolaevna

Sergeeva Irina Artem'Evna

Krylov Nikolaj Vladimirovich

Dates

2015-05-10—Published

2013-12-20—Filed