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公开(公告)号：EP2970038A1
公开(公告)日：2016-01-20
申请号：EP14763830.8
申请日：2014-03-14
发明人： NEATE, Robert, Edward , HAMILTON, Clive, Alexander , STILSON, Robert, E. , WILLIAMSON, George, Malcolm , RUNNACLES, Jonathan, D.
IPC分类号： C07B41/12 , B01J19/24 , C07C69/84 , C08G63/183
CPC分类号： F22B1/16 , B01J8/0015 , B01J8/0065 , B01J8/20 , B01J19/1881 , B01J2208/00176 , B01J2219/00103 , C07C67/08 , C07C69/82
摘要： The invention relates to recycling steam at elevated temperature and/or pressure generated within a thermosiphon esterifier design comprising a riser baffle in the vapor separator. Advantageously, the thermosiphon esterifier design can provide steam that can be employed in various additional processes and can thus provide an overall energy savings in operating the thermosiphon esterifier. Methods of using the steam are also described.
摘要翻译： 本发明涉及在蒸汽分离器中在包括提升器挡板的热虹吸酯设计中产生的升高的温度和/或压力下再循环蒸汽。 有利的是，热虹吸酯酯化物设计可以提供可用于各种附加工艺中的蒸汽，并且因此可以在操作热虹吸酯酯化物时提供总体节能。 还描述了使用蒸汽的方法。
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2.发明公开VARIABLE PRESSURE DROP UP FLOW-PRE-POLYMERIZER (UFPP) SYSTEMS AND METHODS 审中-公开的变压差及其方法溯江而上PRÄPOLYMERISIERER系统
公开(公告)号：EP2718002A2
公开(公告)日：2014-04-16
申请号：EP12797249.5
申请日：2012-06-04
IPC分类号： B01J3/02 , B01J19/24 , C08F2/01 , C08G63/183
CPC分类号： B01J19/24 , B01J14/00 , B01J19/006 , B01J2219/00094 , B01J2219/00162 , B01J2219/00777 , C08G63/181 , C08G63/785
摘要： Disclosed are processes and systems for manufacturing polyethylene terephthalate (PET) and pre-polymer. The processes and systems use a variable pressure drop up-flow-pre-polymerizer configuration. The pressure profile in the UFPP can be selected to beneficially change the relative reaction rates of the polymerization and esterification reactions. This design maximizes the esterification carried out in the UFPP, while still producing a pre-polymer with the optimum carboxyl end groups concentration {e.g., about 30 μ equiv./g to 60 μ equiv./g) to maximize finisher productivity. This can result in a reduction of the size and cost of the esterifier required for a given plant throughput.
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公开(公告)号：EP2867274A1
公开(公告)日：2015-05-06
申请号：EP13810798.2
申请日：2013-06-21
CPC分类号： C08G63/785 , B01D53/78 , B01D53/8678 , B01D2251/506 , B01D2252/2025 , B01D2255/20715 , B01D2255/2092 , B01D2255/50 , B01D2256/10 , B01D2256/18 , B01D2256/22 , B01J2219/00006 , C08G63/78 , C08G63/80 , C08G63/90
摘要： The invention relates to a method for producing a high molecular weight polyethylene terephthalate (PET) via a solid state polymerization system. The method comprises using an acid catalyst to effectuate the conversion of acetaldehyde present within the system to 2 -methyl- 1,3-dioxolane, which can be readily removed. The invention also relates to PET prepared via this process, which can advantageously exhibit low levels of acetaldehyde.
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