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    • 49. 发明申请
    • SPIRAL HEAT EXCHANGER AS A PREHEATER IN POLYMER DEVOLATILIZATION PROCESSES
    • 螺旋式换热器作为聚合物脱挥工艺中的预热器
    • WO2018044395A1
    • 2018-03-08
    • PCT/US2017/041554
    • 2017-07-11
    • EXXONMOBIL CHEMICAL PATENTS INC.
    • HONG, YifengREIMERS, Jay, L.
    • C08F2/01C08F2/04C08F2/06C08F6/06C08F6/10C08F10/02C08F10/06
    • This invention relates to a process for forming polymer including: polymerizing a monomer dissolved in a solvent in the presence of a catalyst system under conditions to obtain a first effluent stream including a solution of the polymer and the solvent; heating the first effluent stream in at least one spiral heat exchanger to produce a second effluent stream, where the first effluent stream flows through the spiral heat exchanger in a cross-flow direction relative to spirals of the spiral heat exchanger and performing a separation on the second effluent stream to produce: a third effluent stream including polymer substantially free of the solvent; and a recycle stream including the solvent and unreacted monomer. Processes for devolatilizing a polymer stream are also provided herein.
    • 本发明涉及一种形成聚合物的方法,包括:在催化剂体系存在下,在溶剂中溶解单体,在获得第一流出物流的条件下聚合,所述第一流出物流包括聚合物溶液和溶剂 ; 在至少一个螺旋式热交换器中加热第一流出物流以产生第二流出物流,其中第一流出物流以相对于螺旋式热交换器的螺旋的横流方向流过螺旋式热交换器,并且在第一流出物流上进行分离 第二流出物流以产生:包含基本上不含溶剂的聚合物的第三流出物流; 和包含溶剂和未反应单体的循环物流。 本文还提供了使聚合物流脱挥发分的方法。