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1. 发明授权

US08212067B2 Method for recovering (meth)acrylonitrile 有权
标题翻译：回收（甲基）丙烯腈的方法
公开(公告)号：US08212067B2
公开(公告)日：2012-07-03
申请号：US12721103
申请日：2010-03-10
申请人： Shigeru Saitou , Takayoshi Miyake
发明人： Shigeru Saitou , Takayoshi Miyake
IPC分类号： C07C253/34
CPC分类号： C07C253/34 , Y02P20/52 , C07C255/08
摘要： An increase in the differential pressure in the distillation tower for the recovery of (meth)acrylonitrile is suppressed, and a stable and efficient operation is performed over a long time. A method for recovering (meth)acrylonitrile from a mixture containing (meth)acrylonitrile, acetonitrile and unsaturated compounds, in which the mixture is introduced into a distillation tower, distillation is performed under the conditions that the overhead liquid of the distillation tower contains (meth)acrylonitrile, acetonitrile is drawn out from the bottom and/or a side stream of the distillation tower, and a liquid containing the unsaturated compounds is drawn out from a site higher in position than the position of drawing acetonitrile.
摘要翻译：用于回收（甲基）丙烯腈的蒸馏塔中的压差的增加被抑制，并且长时间地进行稳定和有效的操作。从含有（甲基）丙烯腈，乙腈和不饱和化合物的混合物中回收（甲基）丙烯腈的方法，其中将混合物引入蒸馏塔中，蒸馏在蒸馏塔的塔顶液体含有（甲基））丙烯腈，乙腈从蒸馏塔的底部和/或侧流中抽出，并且含有不饱和化合物的液体从比抽出乙腈的位置高的位置抽出。

2. 发明申请

US20100256410A1 METHOD FOR RECOVERING (METH) ACRYLONITRILE 有权
标题翻译：回收（甲基）丙烯腈的方法
公开(公告)号：US20100256410A1
公开(公告)日：2010-10-07
申请号：US12721103
申请日：2010-03-10
申请人： Shigeru Saitou , Takayoshi Miyake
发明人： Shigeru Saitou , Takayoshi Miyake
IPC分类号： C07C253/34
CPC分类号： C07C253/34 , Y02P20/52 , C07C255/08
摘要： An increase in the differential pressure in the distillation tower for the recovery of (meth)acrylonitrile is suppressed, and a stable and efficient operation is performed over a long time. A method for recovering (meth)acrylonitrile from a mixture containing (meth)acrylonitrile, acetonitrile and unsaturated compounds, in which the mixture is introduced into a distillation tower, distillation is performed under the conditions that the overhead liquid of the distillation tower contains (meth)acrylonitrile, acetonitrile is drawn out from the bottom and/or a side stream of the distillation tower, and a liquid containing the unsaturated compounds is drawn out from a site higher in position than the position of drawing acetonitrile.
摘要翻译：用于回收（甲基）丙烯腈的蒸馏塔中的压差的增加被抑制，并且长时间地进行稳定和有效的操作。从含有（甲基）丙烯腈，乙腈和不饱和化合物的混合物中回收（甲基）丙烯腈的方法，其中将混合物引入蒸馏塔中，蒸馏在蒸馏塔的塔顶液体含有（甲基））丙烯腈，乙腈从蒸馏塔的底部和/或侧流中抽出，并且含有不饱和化合物的液体从比抽出乙腈的位置高的位置抽出。

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