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1. 发明授权

US06514908B1 Method for exchange of catalysts 有权
标题翻译：交换催化剂的方法
公开(公告)号：US06514908B1
公开(公告)日：2003-02-04
申请号：US09632090
申请日：2000-08-02
申请人： Yukihiko Kakimoto , Yoshihisa Oka , Kenji Muraoka
发明人： Yukihiko Kakimoto , Yoshihisa Oka , Kenji Muraoka
IPC分类号： B01J800
CPC分类号： C07D301/10 , B01J8/008 , B01J8/067 , B01J2208/00212
摘要： In the case where a carbon steel shell and tube type reactor is used and, for example, ethylene is subjected to catalytic gaseous oxidation to manufacture ethylene oxide, if rust is formed on the internal surface of the tubes, impurities such as aldehydes are formed. The cause of formation of the rust is that when the catalyst in the reactor is exchanged, dew is formed on the internal surface of the tubes. The present invention provides, as a method for preventing the rust formation, a method which comprises, in conducting the catalyst exchange work, maintaining the temperature of the internal surface of the tubes higher than the dew point at the work atmosphere (for example, filling the shell side with water and maintaining the temperature of the water higher than the temperature of the atmosphere).
摘要翻译：在使用碳钢壳管型反应器的情况下，例如，乙烯进行催化气态氧化制造环氧乙烷时，如果在管的内表面上形成生锈，则形成诸如醛的杂质。形成锈蚀的原因是当反应器中的催化剂被更换时，在管的内表面上形成露水。本发明提供一种防止生锈的方法，其特征在于，在进行催化剂交换作业时，将管内表面的温度维持在工作气氛以上的露点（例如，填充壳侧用水，保持水温高于大气温度）。

2. 发明授权

US06417411B2 Method for production of ethylene glycol 有权
标题翻译：乙二醇生产方法
公开(公告)号：US06417411B2
公开(公告)日：2002-07-09
申请号：US09844478
申请日：2001-04-27
申请人： Yukihiko Kakimoto , Yoshihisa Oka
发明人： Yukihiko Kakimoto , Yoshihisa Oka
IPC分类号： C07C2910
CPC分类号： C07D301/10 , C07C29/106 , Y02P20/52 , C07C31/202
摘要： In a composite process for subjecting ethylene to catalytic gas phase oxidation thereby obtaining ethylene oxide and causing this ethylene oxide to react with water thereby obtaining ethylene glycol, a method for producing the ethylene glycol is provided which permits effective utilization of the energy at the step for dehydrating and concentrating the resultant aqueous ethylene glycol solution. In the production of ethylene glycol by the supply of the aqueous ethylene glycol solution to a concentrating treatment at the multi-effect evaporator, the method contemplated by this invention for the production of ethylene glycol comprises utilizing as the source of heating at least one specific step the steam generated in the multi-effect evaporator.
摘要翻译：在使乙烯进行催化气相氧化从而获得环氧乙烷并使该环氧乙烷与水反应从而获得乙二醇的复合方法中，提供了一种生产乙二醇的方法，其可有效利用该步骤中的能量脱水并浓缩所得的乙二醇水溶液。在通过将乙二醇水溶液供应到多效蒸发器的浓缩处理来生产乙二醇时，本发明用于生产乙二醇的方法包括利用加热源至少一个特定步骤在多功能蒸发器中产生的蒸汽。

3. 发明申请

US20090088579A1 Production Method of N-Vinyl-2-Pyrrolidone 审中-公开
标题翻译： N-乙烯基-2-吡咯烷酮的制备方法
公开(公告)号：US20090088579A1
公开(公告)日：2009-04-02
申请号：US11918228
申请日：2006-04-07
申请人： Hideto Sugiura , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
发明人： Hideto Sugiura , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
IPC分类号： C07D207/267
CPC分类号： C07D207/267 , B01D9/0059 , C07D201/16
摘要： High-purity NVP can be produced by comprising at least two crystallization processes and supplying the mother liquor from the first crystallization process to the second crystallization process.Further, high-purity NVP can be obtained continuously and stably without plugging caused by depositing of crystals on the heat transfer surface of a crystallizer by controlling the water content in a feed NVP solution at the inlet of the crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight.
摘要翻译：可以通过包含至少两个结晶过程并将母液从第一结晶过程提供到第二结晶过程来生产高纯度NVP。此外，通过控制结晶器入口处的进料NVP溶液中的水分含量，可以连续且稳定地获得高纯度NVP，而不会在结晶器的传热表面上沉积晶体而导致堵塞，从而不低于 0.7重量％且不高于10重量％。

4. 发明授权

US06437199B1 Method for production of high-purity monoethylene glycol 有权
标题翻译：高纯度单乙二醇生产方法
公开(公告)号：US06437199B1
公开(公告)日：2002-08-20
申请号：US09615504
申请日：2000-07-13
申请人： Yoshihisa Oka , Yutaka Sugiyama , Kenji Suzuki , Hironori Horie , Makoto Furukawa
发明人： Yoshihisa Oka , Yutaka Sugiyama , Kenji Suzuki , Hironori Horie , Makoto Furukawa
IPC分类号： C07C2700
CPC分类号： C07C29/106 , C07C29/80 , C07C31/202
摘要： A method for the production of monoethylene glycol of high purity is disclosed which comprises subjecting ethylene to catalytic vapor phase oxidation with a molecular oxygen-containing gas thereby obtaining an ethylene oxide-containing gas, exposing the ethylene oxide-containing gas to an absorbing solution and stripping the resultant ethylene oxide-containing solution in a stripper, condensing the vapor emanating from the top of the stripper thereby obtaining crude ethylene oxide, subjecting at least part of the crude ethylene oxide to a hydration reaction, adding an alkaline substance to the hydration reaction solution in an amount of not less than 0.5 atomic equivalent weight relative to the chlorine atom contained in the hydration reaction solution or dehydrating the hydration reaction solution and introducing the side cut technique to the monoethylene glycol rectification column, and acquiring the monoethylene glycol from the side cut part.
摘要翻译：公开了一种制备高纯度单乙二醇的方法，其中包括使乙烯用含分子氧的气体进行催化气相氧化，从而获得含环氧乙烷的气体，将含环氧乙烷的气体暴露于吸收溶液中，在汽提器中汽提所得到的含环氧乙烷的溶液，冷凝从汽提塔顶部发出的蒸气，从而获得粗环氧乙烷，至少部分粗环氧乙烷进行水合反应，向水化反应中加入碱性物质溶液相对于水合反应溶液中所含的氯原子为0.5原子当量以上，或使水合反应液脱水，将侧切技术引入单乙二醇精馏塔，从侧面取得单乙二醇切割部分。

5. 发明授权

US06550485B2 Washing method for distillation system of nitrogen-containing polymerizable monomers 失效
标题翻译：含氮可聚合单体蒸馏系统的洗涤方法
公开(公告)号：US06550485B2
公开(公告)日：2003-04-22
申请号：US09956895
申请日：2001-09-21
申请人： Yoshihisa Oka , Kenichi Takematsu
发明人： Yoshihisa Oka , Kenichi Takematsu
IPC分类号： B08B900
CPC分类号： B01D3/32
摘要： There is provided a method of efficiently removing polymer stuck to the inside and/or on the surface of packings of a distillation tower, when nitrogen-containing polymerizable monomers (for example, ethyleneimine) are distilled. Said method consists of washing the inside and/or packings of a distillation tower with an acidic liquid (for example, aqueous solution of acetic acid).
摘要翻译：提供了当含氮可聚合单体（例如乙烯亚胺）被蒸馏时，有效地除去粘附在蒸馏塔的填料的内部和/或表面上的聚合物的方法。所述方法包括用酸性液体（例如乙酸水溶液）洗涤蒸馏塔的内部和/或填料。

6. 发明授权

US09096516B2 Production method of N-vinyl-2-pyrrolidone 有权
标题翻译： N-乙烯基-2-吡咯烷酮的制备方法
公开(公告)号：US09096516B2
公开(公告)日：2015-08-04
申请号：US13109450
申请日：2011-05-17
申请人： Hideto Sugiura , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
发明人： Hideto Sugiura , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
IPC分类号： C07D201/16 , B01D9/00 , C07D207/267
CPC分类号： C07D207/267 , B01D9/0059 , C07D201/16
摘要： A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.
摘要翻译：通过结晶生产N-乙烯基-2-吡咯烷酮的方法包括：将结晶器入口处的进料N-乙烯基-2-吡咯烷酮溶液中的水含量控制在不低于0.7重量％且不高于基于N-乙烯基-2-吡咯烷酮溶液的总重量的10重量％以上; 并将进料N-乙烯基-2-吡咯烷酮溶液供给至结晶过程。

7. 发明授权

US06300507B2 Process of manufacturing ethylene oxide 有权
公开(公告)号：US06300507B2
公开(公告)日：2001-10-09
申请号：US09748283
申请日：2000-12-27
申请人： Yoshihisa Oka , Kenichi Takematsu
发明人： Yoshihisa Oka , Kenichi Takematsu
IPC分类号： C07D30110
CPC分类号： C07D301/10 , Y02P20/52
摘要： In manufacturing ethylene oxide by catalytic vapor phase oxidation of ethylene, a process comprising adding, as liquid, an organic halide as a reaction inhibitor into the ethylene raw material gas flow is provided. According to this process, ethylene oxide can be manufactured stably and in high selectivity.

8. 发明申请

US20110218344A1 PRODUCTION METHOD OF N-VINYL-2-PYRROLIDONE 审中-公开
标题翻译： N-乙烯基-2-吡咯烷酮的生产方法
公开(公告)号：US20110218344A1
公开(公告)日：2011-09-08
申请号：US13109450
申请日：2011-05-17
申请人： Hideto SUGIURA , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
发明人： Hideto SUGIURA , Toru Inaoka , Shigeyuki Nozaki , Yoshihisa Oka
IPC分类号： C07D207/273
CPC分类号： C07D207/267 , B01D9/0059 , C07D201/16
摘要： A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.
摘要翻译：通过结晶生产N-乙烯基-2-吡咯烷酮的方法包括：将结晶器入口处的进料N-乙烯基-2-吡咯烷酮溶液中的水含量控制在不低于0.7重量％且不高于基于N-乙烯基-2-吡咯烷酮溶液的总重量的10重量％以上; 并将进料N-乙烯基-2-吡咯烷酮溶液供给至结晶过程。

9. 发明授权

US06924378B2 Method for production of aziridines and N-vinylamides 失效
标题翻译：氮丙啶和N-乙烯基酰胺的生产方法
公开(公告)号：US06924378B2
公开(公告)日：2005-08-02
申请号：US10411502
申请日：2003-04-10
申请人： Yoshihisa Oka , Kenichi Takematsu
发明人： Yoshihisa Oka , Kenichi Takematsu
IPC分类号： C07D203/02 , C07D203/04 , C07D203/08 , C07D207/267
CPC分类号： C07D203/08 , C07D203/04
摘要： In the production of aziridines or N-vinyl amides respectively from an alkanolamine or an alkanolamide by the known method comprising a reaction step, a collecting step and/or a condensation step, a purifying step, and a recovering step, this invention is directed toward preventing formation of a solid substance in the vacuum pumps and the vacuum lines. The object of this invention is accomplished by performing the decompression at the purifying step and the decompression at the recovering step in mutually different decompression systems.
摘要翻译：在通过包括反应步骤，收集步骤和/或缩合步骤，纯化步骤和回收步骤的已知方法从烷醇胺或链烷醇酰胺分别制备氮丙啶或N-乙烯基酰胺中，本发明涉及防止在真空泵和真空管线中形成固体物质。本发明的目的是通过在相互不同的减压系统中的纯化步骤和恢复步骤的减压进行减压来实现。

10. 发明授权

US06566534B2 Processes for the preparation of aziridine compounds and vapor-phase reaction processes 失效
公开(公告)号：US06566534B2
公开(公告)日：2003-05-20
申请号：US09984466
申请日：2001-10-30
申请人： Yoshihisa Oka , Kenichi Takematsu
发明人： Yoshihisa Oka , Kenichi Takematsu
IPC分类号： C07D20304
CPC分类号： C07D203/02
摘要： In order to carry out various vapor-phase reactions (e.g., the preparation of aziridine compounds by a vapor-phase intramolecular dehydration reaction) with industrial advantages, there is provided a process which can effectively prevent the adhesion of tarry matter to piping and the like. This process is applicable, for example, to the preparation of aziridine compounds by using a reactor for carrying out the vapor-phase intramolecular dehydration reaction of an alkanolamine, a collection column for collecting an aziridine compound present in the reaction gas, and a distillation column for distilling the collector liquid to obtain a purified aziridine compound, and is characterized in that at least the piping section extending from the outlet of the reactor to the inlet of the collection column is maintained at a temperature which is not lower than 200° C., or in that the reaction gas is brought into contact with a collector prior to its introduction into the collection column.

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