-
1.发明授权Process for continuous recovery of solid polycarbonate from solutions thereof in organic solvents 失效从其溶液中在有机溶剂中连续回收固体聚碳酸酯的方法
公开(公告)号：US4212967A
公开(公告)日：1980-07-15
申请号：US14161
申请日：1979-02-22
CPC分类号： C08J3/14 , B01F5/0416 , C08G64/205 , C08G64/403 , C08J2369/00
摘要： Solid polycarbonate is recovered continuously from solutions thereof in organic solvents by a process consisting of:(a) subdividing the polycarbonate solution by steam (water vapor) at either sonic or ultra-sonic speed by means of a De Laval type nozzle;(b) conveying the dispersion thus obtained into a tubular heat exchanger having an increasing cross-section, preferably spirally-shaped or with elbow stretches having a thermal exchange coefficient of 500-1500 Kcal/h.m.sup.2 .degree.C., in which the heat dispersion is kept at 100.degree.-140.degree. C. for periods of time comprised between 0.05 and 5 seconds;(c) separating the solid from the vapors in a cyclone;(d) drying of the solid in a water vapor fluid bed.
摘要翻译： 固体聚碳酸酯通过以下工艺由有机溶剂中的溶液连续回收，该方法包括：（a）通过De Laval型喷嘴以声波或超声速将蒸汽（水蒸汽）再分成聚碳酸酯溶液; （b）将如此获得的分散体输送到具有横截面增大的管状热交换器中，该热交换器具有横截面增大，优选为螺旋形状或具有热交换系数为500-1500Kcal / h.m2℃的肘部伸长，其中热量 分散体保持在100-140℃，时间为0.05-5秒; （c）在旋风分离器中将固体与蒸汽分离; （d）在水蒸气流化床中干燥固体。
-
公开(公告)号：US4518750A
公开(公告)日：1985-05-21
申请号：US473553
申请日：1983-03-09
CPC分类号： B01J8/1827 , B01J8/1818 , C08F10/00 , B01J2208/00274 , B01J2219/1946
摘要： A fluid bed reactor, suited for recycling a fluidizing gas containing, in suspension, particles of solid material; comprising a gas distributor consisting of a doubleconed body or of a series of concentrical cones provided on their lateral surfaces with ribs or fins forming gas inflow channels shaped in such a way and with such an inclination as to allow the passage of the solid particles entrained in the gas flow, and such as to hinder the outflow of the solid material that has been fluidized, when the flow of the gas is interrupted.
摘要翻译： 一种流化床反应器，适用于回收含有悬浮液中固体物质颗粒的流化气体; 包括气体分配器，其由双体体或一系列同心圆锥体组成，该圆锥体在其侧表面上具有形成气体流入通道的肋条或翅片，其形状为这样的倾斜，以允许夹带的固体颗粒通过 气体流动，并且当气体的流动被中断时，阻止已被流化的固体材料的流出。
-
搜索结果
2 条记录 (耗时 0.008 秒)
