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2 167 225

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IPC

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Application

99121459/04, 1999-10-11

(24)

Start date

1999-10-11

(22)

Actual filing date

1999-10-11

(45)

Published

2001-05-20

(72)

Inventor

Panichkina O.N.Serkov A.A.Serkov A.T.Budnitskij G.A.Seitova L.N.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Polimernykh Volokon S Opytnym Zavodom

POLYACRYLONITRILE CORD OXIDATION METHOD AND APPARATUS Russian patent published in 2001 - IPC

Abstract RU 2167225 C1

FIELD: production of carbonic filaments. SUBSTANCE: method involves oxidizing cords on heat-conductive surface of heater in air medium at air medium flow rate of 0.1-1.0 m/s and temperature 10-120 C below temperature of maximal exothermal reaction of oxidation of filament-forming polymer, with exothermal heat being utilized for heating of heat-carrier which is continuously circulated in heater. Oxidant and heat-carrier flow rate ratio is 0.01-0.25 at heat-carrier flow rate of 4-10 m/s. Oxidation on heater surface is provided by the action of standard loading of 0.275 •10^-5 - 1.100 •10^-5 n/tex. Apparatus has oxidation chamber with system of heaters contacting with cord, conveying rollers, oxidant supplying device and pyrolysis product suction device. Heaters are made in the form of boxes with heat-conductive surface. Distributing grid and longitudinal rigidity ribs are disposed inside boxes. Heaters are mounted in supports which may be adjusted in vertical plane. Method allows uniform characteristics of produced oxidized filament to be provided. EFFECT: intensified process, reduced power consumption, increased ecological safety of production. 5 cl, 4 dwg, 1 tbl, 24 ex

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RU 2 167 225 C1

Authors

Panichkina O.N.

Serkov A.A.

Serkov A.T.

Budnitskij G.A.

Seitova L.N.

Dates

2001-05-20—Published

1999-10-11—Filed