Granular poly(arylene sulfide) is recovered from a slurry comprising granular poly(arylene sulfide), polar organic solvent, alkali metal halide, poly(arylene sulfide) oligomers, untreated reactants in the water by heating the slurry under conditions to evaporate polar organic solvent, water and volatile impurities at a temperature below the normal boiling point of the polar organic solvent to produce a dry mixture containing poly(arylene sulfide), poly(arylene sulfide) oligomers and alkali metal halide which is then reslurried with water to produce a reslurried mixture containing aqueous alkali metal halide solution and dispersed poly(arylene sulfide) oligomers with the reslurried mixture being filtered through a coarse screen to recover granular poly(arylene sulfide) thereon and pass a filtrate containing poly(arylene sulfide) oligomers and aqueous alkali metal halide solution therethrough. The filtrate can be further treated by filtering through a filter aid coated vacuum filter to recover poly(arylene sulfide) oligomers thereon and pass an aqueous alkali metal halide solution therethrough as filtrate.
从包含颗粒状聚(芳基
硫醚)、极性有机溶剂、碱
金属卤化物、聚(芳基
硫醚)低聚物、
水中未经处理的反应物的浆料中回收颗粒状聚(芳基
硫醚),方法是在极性有机溶剂的正常沸点以下温度蒸发极性有机溶剂、
水和挥发性杂质的条件下加热浆料,生成包含聚(芳基
硫醚)的干燥混合物、然后用
水再沸腾,产生含有碱
金属卤化物
水溶液和分散的聚(芳基
硫醚)低聚物的再沸腾混合物,再沸腾混合物通过粗筛过滤,以回收其中的颗粒状聚(芳基
硫醚),并通过含有聚(芳基
硫醚)低聚物和碱
金属卤化物
水溶液的滤液。滤液还可以通过助滤剂涂层真空过滤器进一步处理,以回收其中的聚(芳基
硫醚)低聚物,并将碱
金属卤化物
水溶液作为滤液通过。