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2 078 058

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C1

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IPC

(21) (22)

Application

95106167/25, 1995-04-20

(22)

Actual filing date

1995-04-20

(45)

Published

1997-04-27

(72)

Inventor

Bikchantaeva N.V.Monakhova N.V.Aleshkina I.V.Koltysheva T.N.Vinogradov E.A.Smirnov V.V.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Po Neftepromyslovoj Khimii

METHOD OF PREPARING THE COMPOSITION FOR BOILER SCALE DISSOLVING Russian patent published in 1997 - IPC

Abstract RU 2078058 C1

FIELD: chemical technology. SUBSTANCE: method involves preliminary mixing hydroxyethylidene diphosphonic acid with water, the successive addition of hydrochloric acid, ammonium chloride and bis-(alkylpolyhydroxyethylene)-phosphate, oxyphos KD-6, at the following ratio of components, wt.-%: hydroxyethylidene diphosphonic acid, 1-12; hydrochloric acid, 8-24; ammonium chloride, 0.1-1; bis-(alkylpolyhydroxyethylene)-phosphate, oxyphos KD-6, 0.7-5.8; and water, the balance. Composition is used in oil production, heat energetics industry for cooling equipment cleansing from salt deposition. EFFECT: improved method of preparing. 1 tbl

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RU 2 078 058 C1

Authors

Bikchantaeva N.V.

Monakhova N.V.

Aleshkina I.V.

Koltysheva T.N.

Vinogradov E.A.

Smirnov V.V.

Dates

1997-04-27—Published

1995-04-20—Filed

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