Title: Control for diluent removal from poly(arylene sulfide) reactor product

Abstract: A method for control of the steam flashing of poly(arylene sulfide) reaction product to remove substantially all of the reaction diluent from a reaction mixture containing poly(arylene sulfide) polymer, organic polar diluent, byproduct alkali metal halide, and reaction mixture impurities is provided by measuring the vapor effluent from the flashing operation, producing a signal representative of this flow, controlling the rate of flow of the effluent from the reactor in response to this signal, and controlling the rate of flow of steam admixed with the reactor effluent in ratio to the effluent flow.

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Inventors: Scoggin, Jack S. (Bartlesville, OK, US)

Application Number: 284462
Filing Date: 1972-08-29
Publication_date: 1976-03-02
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 203/1 159/2.1, 159/44, 202/206, 203/88, 203/95
Other Classes:
US Patent Ref:

2054096	Sep, 1936	Potts et al.	203/88.
2414371	Jan, 1947	Fragen et al.	202/206.
2900312	Aug, 1959	Gilmore	203/2.
3176756	Apr, 1965	Dukelow	202/206.
3356124	Dec, 1967	Dambrine	159/44.
3357900	Dec, 1967	Snell	203/88.
3394053	Jul, 1968	Shinskey	203/1.
3421610	Jan, 1969	Marshall	203/DIG.
3478000	Nov, 1969	Saunders	260/79.
3506715	Apr, 1970	Clark	196/132.
3707528	Dec, 1972	Miles	260/79.
3800845	Apr, 1974	Seoggin	203/73.

Other Refs:
Primary Examiner: Yudkoff, Norman
Assistant Examiner: Sever, Frank
Attorney: