Cleaning of filters

Details Cleaning of filters Cleaning of filters

1993-05-28

1994-12-13

Dean, Richard O.

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

134 19, 134 20, 134 21, 134 1, 210408, 210410, 210769, 210771, 210791, B08B 310, B08B 312, B08B 504, B01D 2446

Patent

active

053726537

ABSTRACT:
A method of cleaning metal filters of a solvent spun fibre production plant. The method comprises the step of (a) dissolving dope from the filters using a hot solvent for the dope, (b) washing the solvent from the filters using hot water, (c) pyrolysing remnants of dope or solvent in the filters, (d) ultrasonically washing the pyrolysed particles from the filters, (e) reheating the filters to dislodge pyrolysed particles, (f) ultrasonically rewashing the filters and (g) drying the filters.

REFERENCES:
patent: 5240613 (1993-08-01), Tsuchitani et al.

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