Privet • Double Dumper

Application report No 112:
Pressure screen trash removal

A european pulp mill has equipped the junk trap drainage of three pressure screens located at the brown stock screening with Privet Double DumpersŪ.

The removal of the trash was originally designed to be carried out manually with two manual ball valves in series. During each shift an operator was supposed to open and close these valves in a certain sequence to dump the junk.

In case this is not done often enough, the junk will accumulate in the screen. This accumulation of the trash could be harmfull for pulp quality and the screen.

Function of the Double DumperŪ can be activated from the DCS as well as from a local panel. The control from the local panel allows the operator to observe the quality and the amount of the reject and the functioning of the drainage.

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