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2 767 672

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(51)

IPC

F28G9/00(2006-01-01)

(21) (22)

Application

2021127561, 2021-09-20

(24)

Start date

2021-09-20

(22)

Actual filing date

2021-09-20

(45)

Published

2022-03-18

(72)

Inventor

Ovechkina Olga VladimirovnaZhuravlev Lev SemenovichArovina Natalya Aleksandrovna

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Dvazhdy Ordena Trudovogo Krasnogo Znameni Teplotekhnicheskij Nauchno-Issledovatelskij Institut"

COMPOSITION FOR CLEANING STEAM TURBINE CONDENSER TUBES INNER SURFACE Russian patent published in 2022 - IPC F28G9/00

Abstract RU 2767672 C1

FIELD: power engineering.

SUBSTANCE: invention relates to thermal and nuclear power engineering and can be used for cleaning the inner surface of condenser tubes, made of brass, titanium and other metals, from scale and corrosion products deposits during repair of industrial heat exchange equipment. Composition for cleaning condenser tubes from deposits, characterized by that it is an aqueous solution of lactic acid and urotropin, with the following ratio of components, wt.%: lactic acid C₃H₆O₃ — 1.0–4.0; urotropin — 0.1–0.2; water — balance.

EFFECT: elimination of negative effect of cleaning composition on cleaned inner surfaces of condenser tubes made of brass and titanium during their cleaning.

1 cl, 4 dwg

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RU 2 767 672 C1

Authors

Ovechkina Olga Vladimirovna

Zhuravlev Lev Semenovich

Arovina Natalya Aleksandrovna

Dates

2022-03-18—Published

2021-09-20—Filed