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1. 发明授权

US5788818A Process for the purification of acetone 失效
标题翻译：丙酮纯化方法
公开(公告)号：US5788818A
公开(公告)日：1998-08-04
申请号：US714358
申请日：1996-09-16
申请人： Lorenzo Lorenzoni , Salvatore Simula , Giuseppe Messina , Riccardo Mansani
发明人： Lorenzo Lorenzoni , Salvatore Simula , Giuseppe Messina , Riccardo Mansani
IPC分类号： C07C45/80 , C07C45/83 , C07C45/84 , C07C49/08 , B01D3/34 , C07C45/82
CPC分类号： C07C45/83
摘要： A process for the purification of raw acetone deriving from processes for the production of phenol acetone, impurity mainly due to cumene, water, aldehydes and methanol, the steps of: feeding the stream of raw acetone coming from the primary fractionation of a plant for the production of phenol and acetone to a first distillation column to which a solution of sodium hydroxide at 2% is also fed; sending the stream at the head of the first column, containing of acetone, water and cumene to a second column to which the extractive solvent triethyleneglycol is also fed; recovering substantially anhydrous acetone from the head of the second column; feeding the bottom product of the second column, containing triethyleneglycol, water, cumene and acetone to a third distillation column in which an azeotropic mixture of water and cumene is recovered from the head and anhydrous triethyleneglycol from the bottom; sending the azeotropic mixture of water and cumene to a decanter in which a water phase is separated, containing acetone, which is recycled to the first column and an organic phase, containing cumene and acetone, which is sent to the primary fractionation.
摘要翻译：一种用于生产丙酮丙酮衍生物的方法，主要是由于异丙基苯，水，醛和甲醇而产生的杂质，其步骤为：将来自植物初级分馏的原始丙酮流将苯酚和丙酮生产到第二蒸馏塔，其中还加入氢氧化钠溶液2％的溶液; 将含有丙酮，水和枯烯的第一塔头部的料流送入萃取溶剂三乙二醇也供给的第二塔; 从第二塔的头部回收基本上无水的丙酮; 将含有三乙二醇，水，异丙基苯和丙酮的第二塔的底部产物进料到第三蒸馏塔中，其中从头部回收水和枯烯的共沸混合物，从底部回收无水三乙二醇; 将水和异丙苯的共沸混合物送入其中分离水相的含水丙酮的滗析器，其中循环到第一塔和含有枯烯和丙酮的有机相送入初级分馏。

2. 发明授权

US5098525A Process for disposing of residues deriving from the synthesis of chlorinated hydrocarbons 失效
标题翻译：处理氯化石油醚合成残留物的方法
公开(公告)号：US5098525A
公开(公告)日：1992-03-24
申请号：US534183
申请日：1990-06-06
申请人： Loreno Lorenzoni , Giuseppe Messina , Vittorio Bruzzi , Salvatore Simula
发明人： Loreno Lorenzoni , Giuseppe Messina , Vittorio Bruzzi , Salvatore Simula
IPC分类号： A62D3/33 , A62D3/40 , A62D101/22 , A62D101/49 , C07C17/38
CPC分类号： A62D3/40 , A62D3/33 , A62D2101/22 , A62D2101/49 , A62D2203/02
摘要： The disposal of chlorinated pitches is carried out by a process which employs two treatments with an alcohol, which are carried out in cascade.Such treatments cause the precipitation of the suspended matter to take place. This is then caused to settle, and is separated and pyrolized, while the supernatant is distilled in order to separate the alcohol, which is recycled back to the process, from other organic components, which are sent to further uses.

3. 发明授权

US5262016A Process for purifying phenol 失效
标题翻译：苯酚纯化方法
公开(公告)号：US5262016A
公开(公告)日：1993-11-16
申请号：US705395
申请日：1991-05-24
申请人： Loreno Lorenzoni , Salvatore Simula , Giuseppe Messina , Vittorio Bruzzi
发明人： Loreno Lorenzoni , Salvatore Simula , Giuseppe Messina , Vittorio Bruzzi
IPC分类号： C07C37/08 , C07C37/80 , C07C39/04 , B01D3/40
CPC分类号： C07C37/80
摘要： A stream of raw phenol, coming from the acidic cracking of cumene hydroperoxide, is purified by a process of extractive distillation carried out in the presence of acetophenone.

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