Falling strand devolatilizer

Details Falling strand devolatilizer Falling strand devolatilizer

1980-06-30

1981-10-13

Yudkoff, Norman

Concentrating evaporators

Superheating and pressure release

With extruder

159 1C, 159DIG10, 159DIG16, 528501, B01D 100

Patent

active

042946522

ABSTRACT:
The present invention relates to an improved falling strand devolatilizer apparatus having a plurality of stages for devolatilization providing polymers with lower residual monomer and/or volatile contents. The novel apparatus utilizes a final flash tank having two flash compartments that share a common heating and vacuum system wherein a recycle line transfers polymer melt from the first compartment to the second compartment for additional devolatilization.

REFERENCES:
patent: 2893926 (1959-07-01), Worthen et al.
patent: 3853672 (1974-12-01), Gordon et al.
patent: 3928300 (1975-12-01), Hagberg
patent: 3995001 (1976-11-01), Vroomans et al.

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