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2. 发明授权

US4260721A Modified fluidized bed 失效
标题翻译：改性流化床
公开(公告)号：US4260721A
公开(公告)日：1981-04-07
申请号：US72784
申请日：1979-09-05
申请人： Leslie J. Ford , Derrick P. Barker
发明人： Leslie J. Ford , Derrick P. Barker
IPC分类号： B01J8/24 , C08G63/42 , C08G63/78 , C08G63/80 , C08G63/26
CPC分类号： C08G63/80 , B01J8/245 , C08G63/42 , C08G63/785
摘要： A process (and apparatus therefor) for carrying out thermally initiated chemical reactions or physical changes by heating a particulate substrate in a fluidized bed having hotter zone(s) and cooler zone(s) between which the fluidized particles circulate, the dwell time in the cooler zone(s) being sufficiently long to allow chemical reactions(s) or physical change(s) to take place so that when the particles move into the hotter zone(s) the undesirable transformation does not take place, and optionally the dwell time in the hotter zone(s) being sufficiently short so that other undesirable transformation(s) does not take place before the particles move into the cooler zone(s). The fluidized bed process is applicable, for example, to a process for the production of poly(ethylene terephthalate) from terephthalic acid and ethylene oxide.
摘要翻译：一种用于通过在具有更热区域和较冷区域的流化床中加热颗粒基质以进行热引发的化学反应或物理变化的方法（及其装置），流化颗粒在其间循环的停留时间，较冷的区域足够长以允许发生化学反应或物理变化，使得当颗粒移动到较热区域中时，不发生不期望的转化，并且可选地，停留时间在更热的区域中足够短，使得在颗粒移动到较冷区域之前不发生其它不期望的变换。流化床方法可用于例如从对苯二甲酸和环氧乙烷生产聚对苯二甲酸乙二醇酯的方法。

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