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1. 发明授权

US4918204A Tetrahydrofuran purification 失效
标题翻译：四氢呋喃净化
公开(公告)号：US4918204A
公开(公告)日：1990-04-17
申请号：US303325
申请日：1989-01-30
申请人： T. Thomas Shih , Te Chang
发明人： T. Thomas Shih , Te Chang
IPC分类号： C07D307/08
CPC分类号： C07D307/08
摘要： Purification of tetrahydrofuran from the dehydrocyclization of 1,4-butanediol in the presence of an organic acid catalyst has been accomplished by the extractive distillation of crude tetrahydrofuran containing water using monopropylene glycol as an extractive solvent.

2. 发明授权

US06914167B2 Vent recovery system 失效
标题翻译：排气回收系统
公开(公告)号：US06914167B2
公开(公告)日：2005-07-05
申请号：US10193067
申请日：2002-08-26
申请人： John C. Jubin, Jr. , Te Chang
发明人： John C. Jubin, Jr. , Te Chang
IPC分类号： C07D303/04 , B01D53/14 , C07D301/03 , C07D301/32 , C07C7/10
CPC分类号： B01D53/1487 , B01D53/1493 , B01J2219/00006 , C07D301/32
摘要： A process for absorbing propylene from a gaseous propylene oxide process purge stream wherein propane liquid is used to absorb the propylene.
摘要翻译：一种从气态环氧丙烷工艺吹扫流吸收丙烯的方法，其中使用丙烷液体吸收丙烯。

3. 发明授权

US5972173A Allyl alcohol purification 有权
标题翻译：烯丙醇精制
公开(公告)号：US5972173A
公开(公告)日：1999-10-26
申请号：US188803
申请日：1998-11-09
申请人： Te Chang , George F. Rowell
发明人： Te Chang , George F. Rowell
IPC分类号： C07C29/82 , C07C29/84 , C07C33/03 , B01D3/40
CPC分类号： C07C29/84
摘要： Mixtures of allyl alcohol and n-propanol are separated by extractive distillation using propylene carbonate, N-methyl pyrrolidone or gamma-butyrolactone extractive distillation solvent.
摘要翻译：用丙烯碳酸酯，N-甲基吡咯烷酮或γ-丁内酯萃取蒸馏溶剂萃取蒸馏分离烯丙醇和正丙醇的混合物。

4. 发明授权

US5591875A Epoxidation Process 失效
标题翻译：环氧化工艺
公开(公告)号：US5591875A
公开(公告)日：1997-01-07
申请号：US587183
申请日：1996-01-16
申请人： Te Chang , David W. Leyshon , Guy L. Crocco
发明人： Te Chang , David W. Leyshon , Guy L. Crocco
IPC分类号： B01J29/04 , B01J29/89 , C07B61/00 , C07D301/12 , C07D303/04
CPC分类号： C07D301/12 , B01J29/89
摘要： In an epoxidation process wherein an olefin is reacted with hydrogen peroxide in the presence of a titanium-containing molecular sieve catalyst and a salt, the tendency of the catalyst to produce greater quantities of oxygen as it ages due to non-selective decomposition of the hydrogen peroxide may be counteracted by the addition of a chelating agent bearing hydroxyl, carboxyl, amino, and/or phosphoryl groups. The use of such a chelating agent enables selectivity to epoxide to be maintained at a desirably high level for a prolonged period of time in a continuous epoxidation unit.
摘要翻译：在其中烯烃与含钛分子筛催化剂和盐的存在下与过氧化氢反应的环氧化方法中，由于氢的非选择性分解，催化剂因其老化而产生更大量的氧气的倾向可以通过加入含有羟基，羧基，氨基和/或磷酰基的螯合剂来抵消过氧化物。使用这种螯合剂可以使环氧化物的选择性在连续环氧化单元中保持在期望的高水平长时间。

5. 发明授权

US07687647B2 Propylene oxide process 失效
标题翻译：环氧丙烷工艺
公开(公告)号：US07687647B2
公开(公告)日：2010-03-30
申请号：US12157110
申请日：2008-06-06
申请人： Te Chang
发明人： Te Chang
IPC分类号： C07D301/06
CPC分类号： C07D301/06
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, a solvent, and a buffer to produce a reaction mixture comprising propylene oxide. Separation of light components from the reaction mixture gives a heavy residue comprising the buffer. The buffer is precipitated from the heavy residue by a precipitating agent.
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，溶剂和缓冲剂的存在下使丙烯，氧气和氢气反应，以产生包含环氧丙烷的反应混合物。将轻组分与反应混合物分离得到包含缓冲液的重残留物。缓冲液通过沉淀剂从重残余物中沉淀出来。

6. 发明授权

US07649102B2 Propylene oxide process 有权
标题翻译：环氧丙烷工艺
公开(公告)号：US07649102B2
公开(公告)日：2010-01-19
申请号：US12079823
申请日：2008-03-28
申请人： Te Chang , Arsam Behkish , Jude T. Ruszkay , John H. Speidel, Jr.
发明人： Te Chang , Arsam Behkish , Jude T. Ruszkay , John H. Speidel, Jr.
IPC分类号： C07D301/06
CPC分类号： C07D301/06 , C07D301/10 , Y02P20/52
摘要： A process for making propylene oxide from propylene is disclosed. Propylene, hydrogen, and oxygen are reacted in a slurry comprising a catalyst and a solvent to produce a gaseous product stream and a liquid product stream. The gaseous product stream is contacted with an absorbent to produce a gas effluent and a liquid effluent. The gas effluent is recycled to the reaction step.
摘要翻译：公开了一种从丙烯制备环氧丙烷的方法。丙烯，氢和氧在包含催化剂和溶剂的浆料中反应以产生气态产物流和液体产物流。气态产物流与吸收剂接触以产生气体流出物和液体流出物。气体流出物再循环到反应步骤。

7. 发明申请

US20090306416A1 Propylene oxide process 失效
标题翻译：环氧丙烷工艺
公开(公告)号：US20090306416A1
公开(公告)日：2009-12-10
申请号：US12157110
申请日：2008-06-06
申请人： Te Chang
发明人： Te Chang
IPC分类号： C07D301/02
CPC分类号： C07D301/06
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, a solvent, and a buffer to produce a reaction mixture comprising propylene oxide. Separation of light components from the reaction mixture gives a heavy residue comprising the buffer. The buffer is precipitated from the heavy residue by a precipitating agent.
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，溶剂和缓冲剂的存在下使丙烯，氧气和氢气反应，以产生包含环氧丙烷的反应混合物。将轻组分与反应混合物分离得到包含缓冲液的重残留物。缓冲液通过沉淀剂从重残余物中沉淀出来。

8. 发明授权

US07550610B1 Direct epoxidation process 失效
标题翻译：直接环氧化工艺
公开(公告)号：US07550610B1
公开(公告)日：2009-06-23
申请号：US12079796
申请日：2008-03-28
申请人： Te Chang , Arsam Behkish , Jude T. Ruszkay , John H. Speidel, Jr.
发明人： Te Chang , Arsam Behkish , Jude T. Ruszkay , John H. Speidel, Jr.
IPC分类号： C07D301/10
CPC分类号： B01J8/22 , B01J8/006 , B01J8/228
摘要： A process is disclosed for reacting an olefin, hydrogen, and oxygen in a slurry comprising a catalyst and a solvent in a reactor. The gas bubbles in the slurry are in a churn-turbulent flow regime. The process gives improved yield and operational and maintenance advantages.
摘要翻译：公开了用于使反应器中包含催化剂和溶剂的浆料中的烯烃，氢和氧反应的方法。浆料中的气泡呈搅动流动状态。该方法提高了产量和操作和维护的优点。

9. 发明申请

US20080300417A1 Slurry reaction system 审中-公开
标题翻译：泥浆反应体系
公开(公告)号：US20080300417A1
公开(公告)日：2008-12-04
申请号：US11809109
申请日：2007-05-31
申请人： Te Chang
发明人： Te Chang
IPC分类号： C07D301/04
CPC分类号： B01J8/006 , B01J8/007 , B01J8/228 , B01J2208/00672 , B01J2208/0069 , B01J2219/00038 , C07D301/06
摘要： The present invention provides a slurry reaction system wherein liquid reaction mixture containing catalyst fines is separated from catalyst particles of a size suitable for use in the slurry reaction in a first separation step and in a subsequent separation step the catalyst fines are separated from liquid reaction mixture.
摘要翻译：本发明提供了一种浆料反应系统，其中含有催化剂细粒的液体反应混合物在适于在第一分离步骤中用于浆料反应的尺寸的催化剂颗粒中分离，并且在随后的分离步骤中，将催化剂细粒与液体反应混合物。

10. 发明申请

US20120312680A1 ALKYLENE OXIDE SEPARATION SYSTEMS, METHODS, AND APPARATUSES 有权
标题翻译：亚烷基氧化物分离系统，方法和装置
公开(公告)号：US20120312680A1
公开(公告)日：2012-12-13
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
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。

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