C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
23/414, 402/5, 4
C08F 6/16 (2006.01) B01D 11/02 (2006.01) C08F 8/20 (2006.01) C08F 14/00 (2006.01) B01D 11/00 (2006.01)
Patent
CA 1217599
- 1 - SPECIFICATION Title of the Invention: COUNTERCURRENT WASHING TOWER AND COUNTERCURRENT WASHING METHOD USING SAME Abstract A countercurrent washing tower including a slurry-charging nozzle provided in an upper part of the tower, a slurry-dispersing member disposed underneath the slurry-feeding nozzle and a plurality of washing liquid feeding nozzles provided in a lower part of the tower, thereby conducting the counter- current washing of the slurry while maintaining each of the flows of the slurry and washing liquid in a staple and macroscopically-laminar state within the tower. A slurry of a synthetic resin can be washed countercurrently with good washing efficiency and percentage recovery of the synthetic resin by using the above washing tower and charging the slurry of the synthetic resin through the slurry-charging nozzle at a flow velocity of 0.5 m/sec. or slower as measured at the opening of the slurry-charging nozzle and, at the same time, feeding the washing liquid from the washing liquid feeding nozzles, preferably at a flow velocity of 0.2 m/sec. or slower as measured at the openings of the washing liquid feeding nozzles.
433675
Funakoshi Yoshiyuki
Ooka Tatuo
Uchikawa Nobutaka
Mitsui Toatsu Chemicals Inc.
Sim & Mcburney
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