Apparatus and method for cleaning pipelines, tubing and...

Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment

Reexamination Certificate

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C134S022110, C134S022120, C134S022180, C134S026000, C134S034000, C134S036000, C134S042000

Reexamination Certificate

active

08083861

ABSTRACT:
An apparatus and method for cleaning passageways and the like with a two-phase mixture of gas under pressure and an aqueous cleaning solution. The two-phase cleaning mixture is generated in a module and is passed out of the module at a predetermined rate that determines droplet size, velocity and droplet density at the pipeline surface to be cleaned. The droplets impact the walls of the passageway to be cleaned, thereby fragmenting, eroding and removing contaminants in said passageway. These are then flushed out of the passageway by the two-phase flow. The flow of cleaning solution can be steady or pulsed. The apparatus and process include a clean-in-place system that is useful in food, beverage, pharmaceutical and similar process industries.

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