Pipe system cleaning and in-line treatment of spent cleaning...

Details Pipe system cleaning and in-line treatment of spent cleaning... Pipe system cleaning and in-line treatment of spent cleaning...

B - Operations, Transporting

08

B

B08B 9/02 (2006.01) C23G 3/04 (2006.01) E03B 7/09 (2006.01)

Patent

CA 2280828

A mobile cleaning unit (50) is connected to a fouled pipe (60) to be cleaned. A pump (65) circulates cleaning solution from a reservoir (70) through an injection valve (80) in the mobile cleaning unit (50). The solution is regulated by diverter valves (85a, 85b) to an upstream valve (90), through the pipe (60), out a downstream valve (100), and through a return valve (110) to the reservoir (70). Treatment is monitored at either an upstream (115) or a downstream isolation valve (118). Spent solution is recirculated until it is environmentally safe for discharge out a drain valve (120). The process minimizes both the volume of treated spent solution and the treatment time.

L'invention concerne une unité de nettoyage (50) mobile que l'on raccorde à un tuyau (60) encrassé pour le nettoyer. Une pompe (65) fait circuler, dans l'unité de nettoyage (50) mobile, la solution de nettoyage prélevée à partir d'un réservoir (70) et introduite via un robinet d'injection (80). Des inverseurs (85a, 85b) envoient la solution vers une vanne (90) amont, qui fait passer la solution à travers le tuyau (60), puis la fait sortir par une vanne (100) aval, qui l'entraîne en direction du réservoir (70) via une vanne de retour (110). On surveille le traitement au niveau d'une vanne d'isolement soit en amont (115) soit en aval (118). On fait recirculer la solution usée jusqu'à ce qu'elle ne présente aucun danger pour l'environnement et puisse être évacuée par une vanne de purge (120). Cette technique réduit à la fois le volume de solution usée traitée et le temps de traitement.

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