Polymer recovery process

Details Polymer recovery process Polymer recovery process

1989-08-30

1993-02-02

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526352, 528501, C08F 214

Patent

active

051838664

ABSTRACT:
A polymerization process wherein monomers are polymerized in liquid diluent to produce a liquid slurry containing particles of normally solid polymers, periodically opening a product takeoff port to allow a charge of liquid slurry to flow into an elongated confined zone including a flash line heater and then into a flash chamber wherein the lighter components are separated from the polymer. The process is particularly characterized by the fact the elongated confined zone is constructed such that the flow time of the charge of slurry in the flash line heater is equal to at least about 25 percent of the time between the time of the closing of the settling valve and the next opening of the settling valve.

REFERENCES:
patent: 3195613 (1965-07-01), Hawkins
patent: 4211124 (1980-07-01), Ng et al.
patent: 4222895 (1980-09-01), Allan et al.
patent: 4424341 (1984-01-01), Hanson et al.
patent: 4469560 (1984-09-01), Morgan
Perry's Chemical Engineers Handbook, 6th ed., McGraw-Hill Inc., 1984, pp. 10-47.

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