Method of cleaning valves or lines

Details Method of cleaning valves or lines Method of cleaning valves or lines

2005-03-01

2005-03-01

Walton, George L. (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C134S022150, C137S015060, C137S241000

Reexamination Certificate

active

06860283

ABSTRACT:
Method of cleaning valves or lines through which hydrolysable polymers are transported at the operating temperature, in which, after the polymer stream has been shut off and the polymer has been evacuated as far as possible, steam is passed through the valves or lines to be cleaned while the operating temperature is maintained at plus/minus 10° C., with the steam being introduced via hydrolysis valves set in the wall of the valve housing or the lines and discharged via emptying apertures.

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patent: 196 49 013 (1998-05-01), None

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