Methods for cleaning industrial equipment with pre-treatment

Details Methods for cleaning industrial equipment with pre-treatment Methods for cleaning industrial equipment with pre-treatment

C - Chemistry, Metallurgy

11

D

C11D 3/02 (2006.01) A01J 7/02 (2006.01) C11D 3/20 (2006.01)

Patent

CA 2576724

A method of cleaning equipment such as heat exchangers, evaporators, tanks and other industrial equipment using clean-in-place procedures and a pre-treatment solution prior to the conventional CIP cleaning process. The pre-treatment step improves the degree of softening of the soil, and thus facilitates its removal. The pre-treatment solution can be a strong acidic solution, a strong alkaline solution, or comprise a penetrant. A preferred strong acidic solution is an acid peroxide solution. In some embodiments, the pre-treatment may include no strong alkali or acid ingredient; rather, the penetrant provides acceptable levels of pre-treatment.

La présente invention concerne un procédé de nettoyage de matériel tels que des échangeurs de chaleur, des évaporateurs, des cuves et d'autres dispositifs industriels au moyen de procédures de nettoyage in situ et à l'aide d'une solution de prétraitement utilisée avant le processus classique de nettoyage in situ. L'étape de prétraitement améliore le niveau de ramollissement du sol et facilite ainsi son élimination. La solution de prétraitement peut être une solution fortement acide, une solution fortement alcaline ou bien comprend un agent de pénétration. Une solution fortement acide préférée est une solution de peroxyde d'acide. Dans certaines formes de réalisation, le prétraitement peut ne comprendre aucun ingrédient fortement alcalin ou fortement acide, dans ce cas, c'est l'agent de pénétration qui assure des niveaux acceptables de prétraitement.

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