专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06509490B2 Method of purifying isophthalonitrile 有权
公开(公告)号：US06509490B2
公开(公告)日：2003-01-21
申请号：US09953409
申请日：2001-09-17
申请人： Susumu Otsuka , Takuji Shitara , Fumisada Kosuge , Kazuhiko Amakawa
发明人： Susumu Otsuka , Takuji Shitara , Fumisada Kosuge , Kazuhiko Amakawa
IPC分类号： C07C25334
CPC分类号： C07C253/34 , C07C255/51
摘要： In a method for separating isophthalonitrile from a gas produced by causing m-xylene to react with ammonia and oxygen-containing gas in the presence of a catalyst, the gas is brought into contact with an organic solvent having a boiling point lower than that of isophthalonitrile; a liquid in which isophthalonitrile is trapped in a trapping step is distilled, to thereby recover isophthalonitrile and the organic solvent from the top of the column and separate at the bottom of the column impurities having boiling points higher than that of isophthalonitrile; and the organic solvent is recovered from the top of the rectification column and liquefied isophthalonitrile of high purity is recovered at the bottom of the column. Thus, loss of isophthalonitrile and plugging of a vacuum-evacuation system caused by isophthalonitrile migrating from a condensation system during distillation under reduced pressure can be prevented, and high-purity isophthalonitrile can be produced at high yield constantly for a long period of time.

2. 发明授权

US06476269B2 Method for producing xylylenediamine 有权
公开(公告)号：US06476269B2
公开(公告)日：2002-11-05
申请号：US09953557
申请日：2001-09-17
申请人： Kenichi Nakamura , Susumu {overscore (O)}tsuka , Fumisada Kosuge , Takuji Shitara , Kazuhiko Amakawa
发明人： Kenichi Nakamura , Susumu {overscore (O)}tsuka , Fumisada Kosuge , Takuji Shitara , Kazuhiko Amakawa
IPC分类号： C07C21100
CPC分类号： C07C253/28 , C07C209/48 , C07C211/27 , C07C255/51
摘要： A method for producing xylylenediamine by hydrogenating phthalonitrile synthesized through ammoxidation of xylene, wherein phthalonitrile is trapped in an organic solvent (A) by bringing a gas produced through ammoxidation into direct contact with the organic solvent (A), and hydrogenation including adding liquid ammonia to the resultant mixture is carried out without separation of phthalonitrile trapped in the organic solvent (A). Through this method, the phthalonitrile can be readily recovered from the produced gas and at high yield without need for new equipment, and xylylenediamine can be efficiently produced through hydrogenation. Xylylenediamine of high purity can be obtained by subjecting the produced xylylenediamine to extraction by use of an organic solvent (B) and water.

3. 发明授权

US07371882B2 Reactor for producing a nitrile compound and method for operating the reactor 有权
标题翻译：用于生产腈化合物的反应器和操作反应器的方法
公开(公告)号：US07371882B2
公开(公告)日：2008-05-13
申请号：US10940652
申请日：2004-09-15
申请人： Shuichi Ueno , Takuji Shitara , Kenichi Nakamura , Fumisada Kosuge
发明人： Shuichi Ueno , Takuji Shitara , Kenichi Nakamura , Fumisada Kosuge
IPC分类号： C07C253/18
CPC分类号： F28D13/00 , B01J8/0055 , B01J8/1836 , B01J2208/00132 , B01J2208/00725 , C07C253/28 , C07C255/51
摘要： A reactor for producing a nitrile compound from a carbon ring or heterocyclic compound having organic substituents by a gas phase reaction using a fluidized catalyst bed with ammonia and a gas containing oxygen. In a cylindrical fluidized catalyst bed having a diameter of 2.0 meters or greater, partial vaporization-type cooling tubes (the cooling medium is partially vaporized in the tubes) and complete vaporization-type cooling tubes (the cooling medium is completely vaporized in the cooling tubes) are disposed in a specific arrangement. Water containing ionic SiO2 in 0.1 ppm or smaller and having an electric conductivity of 5 μS/cm or smaller is used as the cooling medium for the complete vaporization-type cooling tubes. The temperature of the reaction is easily stabilized and uniform distribution of temperature is obtained in the fluidized catalyst bed. Stable continuous operation is achieved for a long time in a commercial scale apparatus.
摘要翻译：一种反应器，其由具有有机取代基的碳环或杂环化合物通过气相反应使用流化催化剂床与氨和含氧气体制备。在直径为2.0米或更大的圆柱形流化催化剂床中，部分气化型冷却管（冷却介质在管中部分蒸发）和完全蒸发式冷却管（冷却介质在冷却管中完全汽化）以特定的布置处理。使用0.1ppm以下的电导率为5μS/ cm以下的含有离子性SiO 2的水作为完全蒸发式冷却管的冷却介质。反应的温度容易稳定，在流化催化剂床中得到均匀的温度分布。在商业规模的设备中长期实现稳定的连续操作。

4. 发明授权

US06284893B1 Process for producing nitrile compounds 有权
公开(公告)号：US06284893B1
公开(公告)日：2001-09-04
申请号：US09742359
申请日：2000-12-22
申请人： Takuji Shitara , Takashi Okawa , Shuji Ebata , Fumisada Kosuge
发明人： Takuji Shitara , Takashi Okawa , Shuji Ebata , Fumisada Kosuge
IPC分类号： C07C25328
摘要： There is disclosed a process for producing a nitrile compounds by ammoxidation of a carbocyclic or heterocyclic compound having organic substituent(s) by reacting the compound with ammonia and an oxygen-containing gas, wherein unreacted ammonia is recovered from the reaction product gas and recycled to the reaction system.

5. 发明申请

US20050054855A1 Reactor for producing a nitrile compound and method for operating the reactor 有权
标题翻译：用于生产腈化合物的反应器和操作反应器的方法
公开(公告)号：US20050054855A1
公开(公告)日：2005-03-10
申请号：US10940652
申请日：2004-09-15
申请人： Shuichi Ueno , Takuji Shitara , Kenichi Nakamura , Fumisada Kosuge
发明人： Shuichi Ueno , Takuji Shitara , Kenichi Nakamura , Fumisada Kosuge
IPC分类号： B01J8/00 , B01J8/18 , C07C253/28 , C07C255/51 , F28D13/00 , C07C253/24 , C07D213/84
CPC分类号： F28D13/00 , B01J8/0055 , B01J8/1836 , B01J2208/00132 , B01J2208/00725 , C07C253/28 , C07C255/51
摘要： A reactor for producing a nitrile compound from a carbon ring or heterocyclic compound having organic substituents by a gas phase reaction using a fluidized catalyst bed with ammonia and a gas containing oxygen. In a cylindrical fluidized catalyst bed having a diameter of 2.0 meters or greater, partial vaporization-type cooling tubes (the cooling medium is partially vaporized in the tubes) and complete vaporization-type cooling tubes (the cooling medium is completely vaporized in the cooling tubes) are disposed in a specific arrangement. Water containing ionic SiO2 in 0.1 ppm or smaller and having an electric conductivity of 5 μS/cm or smaller is used as the cooling medium for the complete vaporization-type cooling tubes. The temperature of the reaction is easily stabilized and uniform distribution of temperature is obtained in the fluidized catalyst bed. Stable continuous operation is achieved for a long time in a commercial scale apparatus.
摘要翻译：一种反应器，其由具有有机取代基的碳环或杂环化合物通过气相反应使用流化催化剂床与氨和含氧气体制备。在直径为2.0米或更大的圆柱形流化催化剂床中，部分气化型冷却管（冷却介质在管中部分蒸发）和完全蒸发式冷却管（冷却介质在冷却管中完全汽化）以特定的布置处理。使用0.1ppm以下的导电率为5μS/ cm以下的离子性SiO 2的水作为完全蒸发式冷却管的冷却介质。反应的温度容易稳定，在流化催化剂床中得到均匀的温度分布。在商业规模的设备中长期实现稳定的连续操作。

6. 发明授权

US06646163B2 Method for producing high purity xylylenediamine 有权
标题翻译：高纯度苯二甲胺生产方法
公开(公告)号：US06646163B2
公开(公告)日：2003-11-11
申请号：US10187020
申请日：2002-07-02
申请人： Kenichi Nakamura , Kazuhiko Amakawa , Takuji Shitara
发明人： Kenichi Nakamura , Kazuhiko Amakawa , Takuji Shitara
IPC分类号： C07C21127
CPC分类号： C07C209/48 , C07C211/27
摘要： In a method for producing xylylenediamine by hydrogenating phthalonitrile separated from a gas produced by causing xylene to react with ammonia and oxygen-containing gas in the presence of a catalyst, (1) the gas is brought into contact with an organic solvent to trap phthalonitrile; (2) a liquid in which phthalonitrile is trapped is distilled, to thereby recover phthalonitrile and the organic solvent from the top of the column and separate at the bottom of the column impurities having boiling points higher than that of phthalonitrile; (3) the organic solvent is recovered from the top of the column and liquefied phthalonitrile of high purity is recovered at the bottom of the column; and (4) the phthalonitrile is hydrogenated after mixing with liquid ammonia and at least one solvent selected from aromatic hydrocarbon and saturated hydrocarbon. Thus, high-purity phthalonitrile is produced at high yield industrially efficiently.
摘要翻译：在通过在催化剂存在下使由二甲苯与氨和含氧气体反应而产生的气体分离的邻苯二甲腈氢化制造苯二甲胺的方法中，（1）使气体与有机溶剂接触以捕获邻苯二甲腈; （2）将其中捕获邻苯二甲腈的液体蒸馏，从塔顶部回收邻苯二甲腈和有机溶剂，并在柱底部分离沸点高于邻苯二甲腈的杂质; （3）从塔顶回收有机溶剂，并在塔底回收高纯度的液化邻苯二甲腈; 和（4）邻苯二甲腈在与液氨和至少一种选自芳族烃和饱和烃的溶剂混合后氢化。因此，高纯度酞腈在工业上高效率地生产。

7. 发明授权

US07785556B2 Method of recovering ammonia 有权
标题翻译：回收氨的方法
公开(公告)号：US07785556B2
公开(公告)日：2010-08-31
申请号：US11925008
申请日：2007-10-26
申请人： Kazuhiko Amakawa , Fumio Tanaka , Takuji Shitara
发明人： Kazuhiko Amakawa , Fumio Tanaka , Takuji Shitara
IPC分类号： C01C1/10 , C01C1/12 , C07D333/38
CPC分类号： C01C1/10 , B01D3/146 , C07C253/28 , C07C255/51
摘要： A method of recovering ammonia by the distillation of an aqueous solution containing ammonia, carbon dioxide and hydrogen cyanide. The distillation is conducted using a distillation apparatus having at least its portion which comes into contact with the aqueous solution made of an alloy 1 or alloy 2. The alloy 1 contains 3% by weight or more of molybdenum, 15% by weight or more of nickel and 15% by weight or more of chromium. The alloy 2 contains 1% by weight or more of molybdenum, 9% by weight or less of nickel and 20% by weight or more of chromium. The use of the alloy 1 or alloy 2 prevents the corrosion of the distillation apparatus and enables the stable recovery of ammonia for a long period of time.
摘要翻译：通过蒸馏含有氨，二氧化碳和氰化氢的水溶液来回收氨的方法。使用至少具有与由合金1或合金2制成的水溶液接触的部分的蒸馏装置进行蒸馏。合金1含有3重量％以上的钼，15重量％以上的钼镍和15重量％以上的铬。合金2含有1重量％以上的钼，9重量％以下的镍和20重量％以上的铬。使用合金1或合金2可以防止蒸馏装置的腐蚀，并能长期稳定地回收氨。

8. 发明申请

US20080102014A1 Method of Recovering Ammonia 有权
标题翻译：氨的回收方法
公开(公告)号：US20080102014A1
公开(公告)日：2008-05-01
申请号：US11925008
申请日：2007-10-26
申请人： Kazuhiko Amakawa , Fumio Tanaka , Takuji Shitara
发明人： Kazuhiko Amakawa , Fumio Tanaka , Takuji Shitara
IPC分类号： C01C1/10
CPC分类号： C01C1/10 , B01D3/146 , C07C253/28 , C07C255/51
摘要： A method of recovering ammonia by the distillation of an aqueous solution containing ammonia, carbon dioxide and hydrogen cyanide. The distillation is conducted using a distillation apparatus having at least its portion which comes into contact with the aqueous solution made of an alloy 1 or alloy 2. The alloy 1 contains 3% by weight or more of molybdenum, 15% by weight or more of nickel and 15% by weight or more of chromium. The alloy 2 contains 1% by weight or more of molybdenum, 9% by weight or less of nickel and 20% by weight or more of chromium. The use of the alloy 1 or alloy 2 prevents the corrosion of the distillation apparatus and enables the stable recovery of ammonia for a long period of time.
摘要翻译：通过蒸馏含有氨，二氧化碳和氰化氢的水溶液来回收氨的方法。使用至少具有与由合金1或合金2制成的水溶液接触的部分的蒸馏装置进行蒸馏。合金1含有3重量％以上的钼，15重量％以上的钼镍和15重量％以上的铬。合金2含有1重量％以上的钼，9重量％以下的镍和20重量％以上的铬。使用合金1或合金2可以防止蒸馏装置的腐蚀，并能长期稳定地回收氨。

9. 发明授权

US07119230B2 Process for production of xylylenediamine and/or cyanobenzylamine 有权
标题翻译：苯二甲胺和/或氰基苄胺的生产方法
公开(公告)号：US07119230B2
公开(公告)日：2006-10-10
申请号：US10608071
申请日：2003-06-30
申请人： Kazuhiko Amakawa , Takuji Shitara
发明人： Kazuhiko Amakawa , Takuji Shitara
IPC分类号： C07C209/48
CPC分类号： C07C253/30 , C07C209/48 , C07C211/27 , C07C255/58
摘要： In the process of the present invention, xylylenediamine and/or cyanobenzylamine is produced by a catalytic liquid-phase hydrogenation of a phthalonitrile compound. The liquid-phase hydrogenation is performed by controlling the concentration of a benzamide compound to a specific level or lower. In a preferred embodiment, the concentration of a benzoic acid compound is further controlled to a specific level or lower. By the process, xylylenediamine and/or cyanobenzylamine is produced at high yields and the catalyst life is prolonged.
摘要翻译：在本发明的方法中，通过邻苯二甲腈化合物的催化液相氢化制备苯二甲胺和/或氰基苄胺。通过将苯甲酰胺化合物的浓度控制在特定水平或更低水平来进行液相氢化。在优选的实施方案中，苯甲酸化合物的浓度进一步控制在特定水平或更低。通过该方法，以高产率生产苯二甲胺和/或氰基苄胺，催化剂寿命延长。

10. 发明申请

US20050014944A1 Process for producing a nitrile compound 有权
标题翻译：腈化合物的制造方法
公开(公告)号：US20050014944A1
公开(公告)日：2005-01-20
申请号：US10865824
申请日：2004-06-14
申请人： Kenichi Nakamura , Shuji Ebata , Fumio Tanaka , Takuji Shitara
发明人： Kenichi Nakamura , Shuji Ebata , Fumio Tanaka , Takuji Shitara
IPC分类号： C07C253/28 , C07C255/51 , C07D213/84 , C07D241/02 , C07D333/38
CPC分类号： C07C253/28 , C07C255/51
摘要： In a process for producing a nitrile compound comprising introducing a carbon ring or heterocyclic compound having organic substituents, ammonia and the air into a reactor and reacting the introduced compounds in the presence of a catalyst, during the reaction, a residual gas obtained after the formed nitrile compound is separated from a reaction gas discharged from the reactor is recycled to the reactor in an amount of 10 to 60% by volume based on the amount of the fresh raw material gas supplied to the reactor and the ratio of the amount by mole of molecular oxygen to the amount by mole of the organic substituent in the carbon ring or heterocyclic compound having organic substituents supplied to the reactor (O2/organic substituent) is kept within 1.5 to 7. The reaction is achieved under an advantageous condition and the nitrile compound can be produced industrially advantageously at a higher yield.
摘要翻译：在制备腈化合物的方法中，包括将具有有机取代基的碳环或杂环化合物，氨和空气引入反应器中并在催化剂存在下使引入的化合物反应，在反应过程中获得的残余气体将从反应器排出的反应气体中分离的腈化合物以供给反应器的新鲜原料气体的量为基准，以10〜60体积％的量循环至反应器，分子氧与提供给反应器的有机取代基的碳环或杂环化合物（O 2 /有机取代基）中的有机取代基的摩尔比保持在1.5〜7的范围内。在有利条件下进行反应，并且腈化合物可以以较高的产率在工业上有利地生产。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式