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    • 1. 发明申请
    • SUSTAINABLE PROCESS FOR THE RECYCLING OF POLYETHYLENE PHTHALATE
    • 可再生聚邻苯二甲酸酯的可持续方法
    • WO2017151144A1
    • 2017-09-08
    • PCT/US2016/020857
    • 2016-03-04
    • SABIC GLOBAL TECHNOLOGIES, B.V.LIU, ZhengASTHANA, Navinchandra
    • LIU, ZhengASTHANA, Navinchandra
    • C08J11/24C07C67/56
    • C08J11/24C07C67/03C07C67/48C07C67/52C07C67/56C08J2367/00C08J2367/02Y02W30/706C07C69/82
    • A method of processing one or more streams in a phthalate-containing polymer recycling system, the method comprising receiving an extract stream and a raffinate stream from a liquid chromatography unit, which is part of the polymer recycling system, wherein the extract stream comprises a bis(hydroxyalkyl) phthalate monomer, C 2-5 alkylene diol, and solvent, and wherein the raffinate stream comprises first impurities, C 2-5 alkylene diol, and solvent; vacuum distilling the extract stream to produce a first solvent stream and a monomer and diol stream comprising the bis(hydroxyalkyl) phthalate monomer and C 2-5 alkylene diol; subjecting the monomer and diol stream to steam separation to produce a monomer stream comprising the bis(hydroxyalkyl) phthalate monomer and water, and a diol stream comprising C 2-5 alkylene diol and water; and vacuum distilling the raffinate stream to produce a second solvent stream and a first impurities stream comprising first impurities and C 2-5 alkylene diol.
    • 一种在含邻苯二甲酸酯的聚合物回收系统中处理一种或多种物流的方法,所述方法包括从液相色谱单元接收提取物流和提余物流,所述液相色谱单元是聚合物回收系统的一部分 其中提取物流包含邻苯二甲酸二(羟烷基)酯单体,C 2-5亚烷基二醇和溶剂,并且其中提余物流包含第一杂质C 2-5亚 亚烷基二醇和溶剂; 真空蒸馏提取物流以产生第一溶剂流和包含邻苯二甲酸二(羟烷基)酯单体和C 2-5亚烷基二醇的单体和二醇流; 使单体和二醇流经过蒸汽分离以产生包含邻苯二甲酸二(羟烷基)酯单体和水以及包含C 2-5亚烷基二醇和水的二醇流的单体流; 并真空蒸馏提余物物流以产生第二溶剂物流和包含第一杂质和C 2-5亚烷基二醇的第一杂质物流。