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2 027 139

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C1

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IPC

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Application

5029067/06, 1992-02-24

(22)

Actual filing date

1992-02-24

(45)

Published

1995-01-20

(72)

Inventor

Mikhajlov V.N.Timoshenko A.V.Rakoch A.G.Shkuro V.G.Volkov L.V.Sindjachkin V.A.

(73)

Holder

Cheboksarskoe Proizvodstvennoe Ob"Edinenie

HEAT-EXCHANGE TUBE FOR CHEMICAL APPARATUS Russian patent published in 1995 - IPC

Abstract RU 2027139 C1

FIELD: heat-exchange equipment. SUBSTANCE: to enhance corrosion resistance of heat-exchange tube in concentrated sulfuric acid at temperature up to 100 C, tube is made of zirconium alloy with acid-resistant coating on side of corrosive medium, 20 to 500 mk in thickness. Zirconium oxide or silicon oxide is used as acid-resistant coating. EFFECT: enhanced resistance to corrosion. 1 tbl

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RU 2 027 139 C1

Authors

Mikhajlov V.N.

Timoshenko A.V.

Rakoch A.G.

Shkuro V.G.

Volkov L.V.

Sindjachkin V.A.

Dates

1995-01-20—Published

1992-02-24—Filed

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