会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 34. 发明公开
    • Procédé de purification du (méth)acrylate de glycidyle
    • Verfahren zur Reinigung von(甲基)丙烯酸缩水甘油酯。
    • EP0519139A1
    • 1992-12-23
    • EP91401562.3
    • 1991-06-12
    • ELF ATOCHEM S.A.
    • Hess, RaymondLacroix, Christian
    • C07D303/16C07D301/32
    • B01D3/36C07D303/16Y10S203/13Y10S203/22
    • Ce procédé de purification par distillation du (méth)acrylate de glycidyle contenant des impuretés légères et des impuretés lourdes, est caractérisé par le fait que : dans une première étape, on conduit une distillation du (méth)acrylate de glycidyle à purifier en présence d'un premier solvant capable de former un hétéroazéotrope à bas point d'ébullition avec les impuretés légères et l'épichlorhydrine, de façon à obtenir une fraction de tête qui est constituée par un hétéroazéotrope solvant-produits légers ; et dans une deuxième étape, on soumet le (méth)acrylate de glycidyle ainsi débarrassé des produits légers à une distillation en présence d'un second solvant capable de former un hétéroazéotrope à bas point d'ébullition avec le (méth)acrylate de glycidyle, de façon à obtenir une fraction de tête constituée par le (méth)acrylate de glycidyle pur recherché, ainsi débarrassé des impuretés lourdes, lesdits solvants étant, au cours de ces deux distillations, présents dans toute la zone de distillation, y compris le bouilleur.
    • 用于通过蒸馏含有轻杂质和重杂质的(甲基)丙烯酸缩水甘油酯纯化的该方法的特征在于:在第一阶段中,待纯化的(甲基)丙烯酸缩水甘油酯的蒸馏在 能够与轻质杂质和表氯醇形成低沸点杂共聚物的第一溶剂,以获得由溶剂/轻质产物杂共混物组成的顶部(头部) 并且在第二阶段中,在轻质产物中除去的(甲基)丙烯酸缩水甘油酯在与(甲基)丙烯酸缩水甘油酯形成低沸点杂共生物的第二种溶剂的存在下进行蒸馏,得到 由所需的纯的(甲基)丙烯酸缩水甘油酯构成的顶部(头部部分),从而消除重杂质,所述溶剂在这两个蒸馏过程中遍及包括蒸馏容器的蒸馏区域。
    • 37. 发明公开
    • DISTILLATION APPARATUS AND METHOD.
    • DESTILLIERUNGSVORRICHTUNG UND VERFAHREN。
    • EP0317556A4
    • 1989-10-12
    • EP87904214
    • 1987-06-18
    • SALFON PTY LTD
    • SPENCER COLIN WILLIAM
    • B01D1/04B01D1/02B01D3/00B01D3/10C02F1/04C02F1/16
    • B01D3/101B01D1/02B01D3/00B01D3/007B01D3/10B01D3/106C02F1/16Y02A20/128Y10S203/04Y10S203/13Y10S203/16Y10S203/19Y10S203/90
    • Method and apparatus for separating volatile contaminants from a liquid to be continuously distilled. A continuous still comprises evaporator (1) having a heating coil (2), and condensor coil (6), and distillate collector (5). An entrainment device (11) removes distillate (13) from collector (5) via line (10) and reduces pressure in evaporator (1). Feed liquid (21) containing volatile contaminants is charged batchwise to a pre-chamber (20) at sub-atmospheric pressure which is then sealed (valve 22) from feed supply (21). Volatile contaminants are extracted from the charge in prechamber (20) via line (26) and entrainment device (32). Pre-chamber (20) is subsequently placed in communication (via valve 25) with evaporator (1) whereby to equilibrate pressure between evaporator (1) and pre-chamber (20). Liquid levels in pre-cheamber (20) and evaporator (1) then equilibrate whereby decontaminated liquid is automatically transferred (line 36) from the pre-chamber (20) to evaporator (1) to make up for distillate removed from evaporator (1). Valve (25) is then closed and the cycle repeated. The valves are automatically operated in a timed sequence.
    • 用于从待连续蒸馏的液体中分离挥发性污染物的方法和设备。 连续蒸馏器还包括具有加热盘管(2)的蒸发器(1)和冷凝器盘管(6)以及蒸馏物收集器(5)。 夹带装置(11)通过管线(10)从收集器(5)中移出馏出物(13)并降低蒸发器(1)中的压力。 将含有挥发性污染物的进料液体(21)分批加入到低于大气压的预处理室(20)中,然后从进料供应装置(21)密封(阀22)。 挥发性污染物通过管线(26)和夹带装置(32)从预燃室(20)中的装料中提取。 随后将预室(20)与蒸发器(1)连通(通过阀25),由此平衡蒸发器(1)和预燃室(20)之间的压力。 然后预平衡器(20)和蒸发器(1)中的液位平衡,由此净化液自动从预处理室(20)转移到蒸发器(1)(管线36)以补偿从蒸发器(1)移出的馏出物 。 然后关闭阀(25)并重复该循环。 阀门按照定时顺序自动运行。
    • 38. 发明公开
    • DISTILLATION APPARATUS AND METHOD
    • 蒸馏装置和方法
    • EP0317556A1
    • 1989-05-31
    • EP87904214.0
    • 1987-06-18
    • SALFON PTY. LIMITED
    • SPENCER, Colin, William
    • B01D1B01D3C02F1
    • B01D3/101B01D1/02B01D3/00B01D3/007B01D3/10B01D3/106C02F1/16Y02A20/128Y10S203/04Y10S203/13Y10S203/16Y10S203/19Y10S203/90
    • Method and apparatus for separating volatile contaminants from a liquid to be continuously distilled. A continuous still comprises evaporator (1) having a heating coil (2), and condensor coil (6), and distillate collector (5). An entrainment device (11) removes distillate (13) from collector (5) via line (10) and reduces pressure in evaporator (1). Feed liquid (21) containing volatile contaminants is charged batchwise to a pre-chamber (20) at sub-atmospheric pressure which is then sealed (valve 22) from feed supply (21). Volatile contaminants are extracted from the charge in prechamber (20) via line (26) and entrainment device (32). Pre-chamber (20) is subsequently placed in communication (via valve 25) with evaporator (1) whereby to equilibrate pressure between evaporator (1) and pre-chamber (20). Liquid levels in pre-cheamber (20) and evaporator (1) then equilibrate whereby decontaminated liquid is automatically transferred (line 36) from the pre-chamber (20) to evaporator (1) to make up for distillate removed from evaporator (1). Valve (25) is then closed and the cycle repeated. The valves are automatically operated in a timed sequence.
    • 所公开的方法和装置用于从待连续蒸馏的液体中分离挥发性污染物。 连续蒸馏设备包括具有加热盘管(2),冷凝盘管(6)和馏出物收集器(5)的蒸发器(1)。 驱动器(11)通过管线(10)从歧管(5)中去除馏出物(13)并降低蒸发器(1)中的压力。 将含有挥发性污染物的进料液体(21)在低于大气压的压力下分批加入到预燃室(20)中,然后将所述室与进料液体(21)密封(阀22)。 挥发性污染物通过管线(26)和驱动器(32)从前室(20)中的装料中除去。 然后将预燃室20与蒸发器1连通(通过阀25),由此允许蒸发器1和预燃室20之间的压力平衡。 然后预平衡室(20)和蒸发器(1)中的液位平衡,然后净化液自动从预燃室(20)转移到蒸发器(1)(管路36),以便 代替从蒸发器(1)中移出的馏出物。 阀门(25)然后关闭,循环再次开始。 阀门按照时钟顺序自动运行。
    • 39. 发明公开
    • Process
    • Verfahren。
    • EP0255399A2
    • 1988-02-03
    • EP87306805.0
    • 1987-07-31
    • DAVY McKEE (LONDON) LIMITED
    • Kippax, John WilsonRathmell, Colin
    • C07C69/60C07C67/08
    • C07C67/08C07C69/657Y10S203/02Y10S203/13
    • A process is described for the production of a dialkyl maleate by reaction of maleic anhydride with an alkyl alcohol in a monoesterification zone to form the corresponding monoalkyl maleate, followed by reaction of resulting monoalkyl maleate with further alkyl alcohol to form the corresponding dialkyl maleate, which includes the steps of supplying a first liquid feed comprising said monoalkyl maleate to a secondary esterification zone containing a charge of a solid esterification catalyst, supplying a second feed stream comprising said alkyl alcohol to said secondary esterification zone, maintaining said secondary esterification zone at an elevated temperature sufficient to form or to maintain therein a vaporous stream containing said alkyl alcohol, intimately contacting said first liquid feed in said secondary esterification zone in the presence of said catalyst with said vaporous feed stream, recovering from said secondary esterification zone a vaporous effluent stream containing, in addition to alkyl alcohol vapour, also water in vapour form, said water being produced in said secondary esterification zone by esterification of said monoalkyl maleate with said alkyl alcohol, and recovering from said secondary esterification zone a liquid product stream containing said dialkyl maleate.
    • 描述了通过马来酸酐与单酯化区中的烷基醇反应生成马来酸二烷基酯以形成相应的马来酸单烷基酯,随后将马来酸单烷基酯与另外的烷基醇反应形成相应的马来酸二烷基酯的方法,其中 包括将包含所述马来酸单烷基酯的第一液体进料供给到含有固体酯化催化剂的二次酯化区域,将包含所述烷基醇的第二进料流供应到所述仲酯化区,将所述仲酯化区保持在升高 温度足以形成或保持含有所述烷基醇的蒸汽流,在所述催化剂存在下与所述气态进料流紧密接触所述仲酯化区中的所述第一液体进料,从所述仲酯化区回收含有 , 一世 除了烷基醇蒸气,还有蒸汽形式的水,所述水通过所述烷基醇的所述马来酸单烷基酯的酯化在所述仲酯化区中产生,并从所述仲酯化区回收含有所述马来酸二烷基酯的液体产物流。