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21. 发明授权

US08981133B2 Alkylene oxide separation systems, methods, and apparatuses 有权
标题翻译：环氧烷分离系统，方法和装置
公开(公告)号：US08981133B2
公开(公告)日：2015-03-17
申请号：US13155136
申请日：2011-06-07
申请人： Xiangmin Li , David W. Leyshon , Te Chang
发明人： Xiangmin Li , David W. Leyshon , Te Chang
IPC分类号： B01D3/40 , C07D301/32 , C07D303/04 , C07D301/19
CPC分类号： C07D303/04 , B01D3/40 , C07D301/19 , C07D301/32
摘要： The disclosure relates to a process for separating propylene oxide for a crude propylene oxide stream, for example an intermediate stream from a PO/TBA process. The crude propylene oxide stream can be passed through an extractive distillation column. The distillation column is operated at a pressure in a range of greater than 25 up to 50 psig, and/or at a temperature in a range of from 70 to 150 degrees Celsius using C8-C20 paraffin as extractive solvent with an overhead distillate water wash drum. The crude propylene oxide stream include from 0.001 to 0.1 wt % methanol, based on the total composition of the crude propylene oxide stream. The systems, methods, and apparatuses can produce a propylene oxide stream having less formaldehyde and acetaldehyde than the prior art.
摘要翻译：本公开涉及用于分离粗环氧丙烷流的环氧丙烷的方法，例如来自PO / TBA方法的中间体流。粗环氧丙烷流可以通过萃取蒸馏塔。使用C8-C20石蜡作为萃取溶剂，用塔顶蒸馏水洗涤将蒸馏塔在大于25psig至50psig的范围内和/或在70至150摄氏度的温度范围内运行。鼓。粗环氧丙烷流包含0.001至0.1重量％的甲醇，基于粗环氧丙烷流的总组成。系统，方法和装置可以产生比现有技术更少的甲醛和乙醛的环氧丙烷流。

22. 发明授权

US07741498B2 Propylene oxide process 失效
标题翻译：环氧丙烷工艺
公开(公告)号：US07741498B2
公开(公告)日：2010-06-22
申请号：US12231220
申请日：2008-08-29
申请人： Te Chang , Gary A. Sawyer
发明人： Te Chang , Gary A. Sawyer
IPC分类号： C07D301/06
CPC分类号： C07D301/06 , C07D301/08 , C07D301/32
摘要： A process for making propylene oxide from propylene is disclosed. The process comprises reacting propylene, oxygen, and hydrogen in the presence of a catalyst and a solvent to produce a reaction mixture comprising propylene oxide. Separation of propylene, oxygen, hydrogen, and propylene oxide from the reaction mixture results in a residual mixture comprising methanol. A portion of the residual mixture is recycled to the reaction. A portion of the residual mixture is distilled to generate a distilled methanol stream, which is recycled to the reaction.
摘要翻译：公开了一种从丙烯制备环氧丙烷的方法。该方法包括在催化剂和溶剂的存在下使丙烯，氧和氢反应以产生包含环氧丙烷的反应混合物。从反应混合物中分离丙烯，氧，氢和环氧丙烷导致包含甲醇的残留混合物。将一部分残余混合物再循环至反应。将一部分残余混合物蒸馏以产生蒸馏的甲醇流，将其再循环至反应中。

23. 发明授权

US5912367A High efficiency epoxidation process 失效
标题翻译：高效环氧化工艺
公开(公告)号：US5912367A
公开(公告)日：1999-06-15
申请号：US886628
申请日：1997-07-01
申请人： Te Chang
发明人： Te Chang
IPC分类号： B01J29/89 , B01J29/90 , B01J38/64 , C07D301/12 , C07D301/19
CPC分类号： B01J38/64 , B01J29/90 , C07D301/12 , B01J29/89 , Y02P20/584 , Y02P20/588
摘要： Propylene is converted to propylene oxide in a highly efficient liquid phase process wherein temperature and pressure are both increased over the course of the epoxidation, which is preferably conducted in a continuous mode of operation. The catalyst used is a heterogeneous catalyst such as titanium silicalite or titania-on-silica. The oxidizing agent is an active oxygen species such as hydrogen peroxide or an organic hydroperoxide. When the desired yield of propylene oxide can no longer be maintained, the catalyst is replaced or regenerated. Regeneration by washing the catalyst with a hot solvent containing a source of ammonium or alkali metal cations is highly
摘要翻译：丙烯在高效液相方法中转化为环氧丙烷，其中温度和压力在环氧化过程中均升高，优选以连续的操作方式进行。所使用的催化剂是非均相催化剂，例如钛硅沸石或二氧化钛上的二氧化硅。氧化剂是活性氧，例如过氧化氢或有机氢过氧化物。当不能再保持所需的环氧丙烷产率时，更换或再生催化剂。通过用含有铵或碱金属阳离子源的热溶剂洗涤催化剂进行再生是高度的

24. 发明授权

US5538599A Phenol separation 失效
标题翻译：苯酚分离
公开(公告)号：US5538599A
公开(公告)日：1996-07-23
申请号：US463833
申请日：1995-06-05
申请人： Tim T. Wong , Stephen H. Harris , Thomas S. Zak , Te Chang
发明人： Tim T. Wong , Stephen H. Harris , Thomas S. Zak , Te Chang
IPC分类号： C07C29/84 , C07C37/80 , C07C45/83 , B01D3/40
CPC分类号： C07C37/80 , C07C29/84 , C07C45/83 , Y10S203/17
摘要： A process is provided whereby phenol is separated from 1-phenyl ethanol, acetophenone or mixtures by extractive distillation with sulfolane as extractive distillation agent which decreases phenol volatility relative to 1-phenyl ethanol and acetophenone.
摘要翻译：提供了一种方法，其中苯酚通过萃取蒸馏与环丁砜作为萃取蒸馏剂从1-苯基乙醇，苯乙酮或其混合物中分离出来，其相对于1-苯基乙醇和苯乙酮降低了苯酚的挥发性。

25. 发明授权

US5290743A Process for regenerating a deactivated rhodium hydroformylation catalyst system 失效
标题翻译：再生失活的铑加氢甲酰化催化剂体系的方法
公开(公告)号：US5290743A
公开(公告)日：1994-03-01
申请号：US34321
申请日：1993-03-22
申请人： Te Chang
发明人： Te Chang
IPC分类号： B01J31/40 , C07C45/50 , B01J38/58
CPC分类号： B01J31/20 , B01J31/24 , B01J31/2404 , B01J31/4046 , C07C45/50 , B01J2231/321 , B01J2531/822 , Y02P20/584
摘要： A process for regenerating a deactivated hydroformylation catalyst system that contains a rhodium hydridocarbonyl tris(trisubstituted phosphine) complex, a trisubstituted phosphine, and a diphosphinoalkane, is disclosed. The process involves oxidation of the catalyst system, removal of the phosphine oxidation products, and regeneration of the catalyst system by syngas treatment, aqueous extraction, and addition of phosphine ligands.
摘要翻译：公开了一种用于再生含有铑氢化羰基三（三取代膦）络合物，三取代膦和二膦基烷烃的失活加氢甲酰化催化剂体系的方法。该方法包括催化剂体系的氧化，磷化氢氧化产物的除去，以及通过合成气处理，含水萃取和加入膦配体催化剂体系的再生。

26. 发明授权

US5126505A KA oil recovery 失效
标题翻译： KA油回收
公开(公告)号：US5126505A
公开(公告)日：1992-06-30
申请号：US600032
申请日：1990-10-18
申请人： Te Chang
发明人： Te Chang
IPC分类号： C07C27/00 , C07C35/08 , C07C45/59 , C07C45/60 , C07D301/19
CPC分类号： C07C45/60 , C07C45/59
摘要： The invention relates to improved recovery of cycloalkanol/cycloalkanone from epoxidation mixtures which result from olefin epoxidation with cycloalkyl hydroperoxide by hydrolysis of ketal compounds contained in the mixtures.

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