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

US5707497A Process for the separation of hydrogen fluoride and of difluoromethane 失效
标题翻译：氟化氢和二氟甲烷分离方法
公开(公告)号：US5707497A
公开(公告)日：1998-01-13
申请号：US394983
申请日：1995-02-27
申请人： Jean-Michel Galland , Dominique Rouzies
发明人： Jean-Michel Galland , Dominique Rouzies
IPC分类号： C01B7/19 , C07C17/38 , C07C17/383 , C07C19/08 , B01D3/36
CPC分类号： C07C17/38 , C01B7/196
摘要： A process for the separation of hydrogen fluoride (HF) and of difluoromethane (F32) by fractional distillation and/or condensation, in at least one stage, including in at least one stage obtaining a stream whose HF and F32 contents correspond.
摘要翻译：一种在至少一个阶段中通过分馏和/或冷凝分离氟化氢（HF）和二氟甲烷（F32）的方法，包括在至少一个阶段中获得HF和F32含量对应的物流。

2. 发明授权

US5569793A Process for the production of 1,1,1-chlorodifluoroethane 失效
标题翻译：生产1,1,1-氯二氟乙烷的方法
公开(公告)号：US5569793A
公开(公告)日：1996-10-29
申请号：US480703
申请日：1995-06-07
申请人： Michel Bergougnan , Jean-Michel Galland , Sylvain Perdrieux
发明人： Michel Bergougnan , Jean-Michel Galland , Sylvain Perdrieux
IPC分类号： B01J27/10 , B01J23/18 , C07B61/00 , C07C17/20 , C07C19/08 , C07C17/08
CPC分类号： C07C17/206 , Y02P20/582
摘要： The invention relates to continuous production of 1,1,1-chlorodifluoroethane from 1,1,1-trichloroethane and hydrofluoric acid by reaction in liquid phase in the presence of at least one fluorination catalyst. According to the invention, the process is carried out under an absolute pressure of between 6 and 30 bars and at a temperature of between 50.degree. and 120.degree. C., the content of catalyst(s) in the reaction mixture, expressed as a percentage by weight of metal, being between 0.05 and 10% and the content of organohalogenated by-products not belonging to series 140 in the reaction mixture being controlled at a value below 40% by weight. This process makes it possible, at the same time, to obtain a high degree of conversion of hydrofluoric acid, to minimize the coproduction of 1,1,1-trifluoroethane and organohalogenated by-products and to facilitate the recovery of the hydrochloric acid formed.
摘要翻译：本发明涉及在至少一种氟化催化剂存在下，通过在液相中反应从1,1,1-三氯乙烷和氢氟酸连续生产1,1,1-氯二氟乙烷。根据本发明，该方法在绝对压力为6至30巴之间并在50至120℃的温度下进行，反应混合物中催化剂的含量以百分比表示的金属，为0.05〜10％，反应混合物中不属于140系列的有机卤化副产物的含量控制在40重量％以下。该方法同时可以获得氢氟酸的高度转化率，以使1,1,1-三氟乙烷和有机卤化副产物的共同生成最小化并促进形成的盐酸的回收。

3. 发明授权

US5426254A Process for the separation of hydrogen fluoride from its mixtures with 1,1,1-trifluoro-2-chloroethane 失效
标题翻译：从1,1,1-三氟-2-氯乙烷与其混合物中分离氟化氢的方法
公开(公告)号：US5426254A
公开(公告)日：1995-06-20
申请号：US118846
申请日：1993-09-10
申请人： Jean-Michel Galland , Rene Perdriau , Dominique Rouzies
发明人： Jean-Michel Galland , Rene Perdriau , Dominique Rouzies
IPC分类号： C01B7/19 , C07C17/38 , C07C19/08 , C07C19/12
CPC分类号： C07C17/38 , C01B7/195 , C01B7/196
摘要： The invention relates to the separation of hydrogen fluoride (HF) from its mixtures with 1,1,1-trifluoro-2-chloroethane (F133a).By settling of the mixture of HF and F133a in the presence of trichloroethylene at a temperature below 0.degree. C., a lower organic phase which is poor in HF and an upper phase which is rich in HF are obtained. The latter can be directly recycled to the fluorination reactor or subjected to a distillation in order to separate, at the head, the HF/F133a azeotrope which is returned to the settler, and to recover, at the foot, practically pure HF. By distillation of the lower phase, the HF/F133a azeotrope which is returned to the settler is separated at the head and a mixture of F133a and trichloroethylene is recovered at the foot. The latter mixture is subjected to a distillation which makes it possible to separate, at the head, pure F133a from trichloroethylene at the foot.
摘要翻译：本发明涉及氟化氢（HF）与1,1,1-三氟-2-氯乙烷（F133a）的混合物的分离。通过在低于0℃的温度下在三氯乙烯存在下使HF和F133a的混合物沉降，得到HF的较低有机相和富含HF的上相。后者可以直接再循环到氟化反应器或进行蒸馏，以在头部分离返回到沉降器的HF / F133a共沸物，并在脚处回收实际上纯的HF。通过蒸馏下相，返回到沉降器的HF / F133a共沸物在头部分离，并在脚部回收F133a和三氯乙烯的混合物。将后一种混合物进行蒸馏，这使得可以在头部从脚部的三氯乙烯分离纯F133a。

4. 发明授权

US5600039A Process for the preparation of 1,1,1,2-tetrafluoroethane 失效
标题翻译： 1,1,1,2-四氟乙烷的制备方法
公开(公告)号：US5600039A
公开(公告)日：1997-02-04
申请号：US363553
申请日：1994-12-23
申请人： Jean-Michel Galland , Emmanuel Guiraud , Jean-Pierre Schirmann
发明人： Jean-Michel Galland , Emmanuel Guiraud , Jean-Pierre Schirmann
IPC分类号： B01J23/26 , B01J27/053 , C07B61/00 , C07C17/20 , C07C19/08 , C07C17/08
CPC分类号： C07C17/206 , Y02P20/582
摘要： The subject of the invention is a continuous process for the preparation of 1,1,1,2-tetrafluoroethane (134a) from 2-chloro-1,1,1-trifluoroethane (133a) and hydrofluoric acid in the gaseous phase in the presence of a chromium-based catalysts.According to the invention, the flow of gas leaving the reactor is subjected to a distillation in order to separate at the top a flow containing almost all the HC1 and at least 90% of the 134a produced by the reaction and at the bottom a flow containing at least 90% of the unconverted reactants (133a and HF), and the latter flow is recycled directly to the reactor, without any purifying operation.
摘要翻译：本发明的主题是在2-氯-1,1,1-三氟乙烷（133a）中制备1,1,1,2-四氟乙烷（134a）和在气相中的氢氟酸的连续方法的铬基催化剂。根据本发明，离开反应器的气体流被进行蒸馏，以在顶部分离含有几乎所有的HC1和至少90％的通过反应产生的134a的流，并且在底部分离含有至少90％的未转化的反应物（133a和HF），后者的流体直接再循环到反应器中，而无需任何净化操作。

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