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 11/00 (2006.01) A01J 7/02 (2006.01) B08B 9/02 (2006.01) C11D 1/72 (2006.01) C11D 3/20 (2006.01) C11D 3/39 (2006.01) C11D 3/43 (2006.01) C11D 7/26 (2006.01) C11D 7/50 (2006.01)

Patent

CA 2619007

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.

L~invention concerne un procédé de nettoyage d~un équipement industriel tel que des échangeurs de chaleur, des évaporateurs, des cuves et autres équipements industriels, utilisant des procédures de nettoyage sur place et une solution de pré-traitement avant le procédé classique de nettoyage CIP. L~étape de pré-traitement permet d~améliorer le degré de ramollissement des salissures, facilitant ainsi leur élimination. La solution de pré-traitement peut consister en une solution d~acide fort, une solution de base forte ou peut comprendre un pénétrant. Une solution de peroxyde acide constitue une solution d'acide fort préférée. Selon certains modes de réalisation, le pré-traitement peut ne pas comprendre d~ingrédient acide ou base forts, le pénétrant permet alors d'obtenir des niveaux acceptables de pré-traitement.

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