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    • 3. 发明公开
    • PROCESS FOR THE PREPARATION OF SUCCINIC ACID ESTER
    • 制备琥珀酸酯的方法
    • EP2958886A1
    • 2015-12-30
    • EP14809677.9
    • 2014-12-02
    • Johnson Matthey Davy Technologies Limited
    • SMIDT, Martin LucasCAMPBELL, IanGORDON, PaulFERGUSON, ChristopherREED, Graham
    • C07C67/08
    • C07C67/08B01D3/009C07C69/40
    • A process for production of dialkyl succinate from bio-succinic acid feedstock where solid bio-succinic acid is fed to a reactor to react with alkanol by autocatalytic esterification. Products from the reactor including unreacted succinic acid, mono alkyl ester, dialkyl ester, alkanol, water and impurities are sent to a reaction distillation column for esterification of succinic acid and further esterification of mono alkyl ester with upflowing alkanol. The bottoms products from the reaction distillation column including residual succinic acid, mono alkyl ester, dialkyl ester, impurities and alkanol are sent to a bottoms stream separation zone where di-alkyl ester is separated from alkanol, succinic acid, mono alkyl ester and impurities. The tops products from the reaction distillation column including alkanol, water and organic components are sent to a top stream distillation zone where alkanol is separated from water and organic components. The organic components are recycled to the reaction zone column.
    • 由生物琥珀酸原料生产琥珀酸二烷基酯的方法,包括以下步骤: (a)将固体生物琥珀酸供给到第一反应器中,在第一反应器中与链烷醇接触,所述第一反应器在合适的温度和压力下操作以使自催化酯化发生; (b)使从第一反应器中除去的包含未反应的琥珀酸,单烷基酯,二烷基酯,链烷醇,水和杂质的料流通入在反应区顶部或顶部附近的点,所述反应区在温度和压力下操作以使 琥珀酸和单烷基酯的进一步酯化,并使所述料流逆流反应以向上流出另外的链烷醇; (c)从反应区塔底或附近除去包含选自渣油, 琥珀酸,单烷基酯,二烷基酯,杂质和链烷醇,并将所述物流通入底部物流分离区,在此将所述二烷基酯与链烷醇和琥珀酸单烷基酯和杂质分离; (d)将琥珀酸和单烷基酯循环到反应区柱中; (e)除去至少一些杂质作为吹扫; 和(f)从反应区塔顶部或附近除去包含链烷醇,水和有机组分的物流,并使所述物流通过塔顶馏出区,在塔顶馏出区分离链烷醇,从水和有机组分中分离出 将有机组分再循环至反应区柱。
    • 10. 发明公开
    • PROCESS FOR THE PREPARATION OF SUCCINIC ACID ESTER
    • 制备琥珀酸酯的方法
    • EP2958885A1
    • 2015-12-30
    • EP14809676.1
    • 2014-12-02
    • Johnson Matthey Davy Technologies Limited
    • SMIDT, Martin LucasCAMPBELL, IanREED, GrahamGORDON, PaulFERGUSON, Christopher
    • C07C67/08
    • C07C67/08B01D3/009B01D3/143B01D17/0208C07C67/54C07C69/40
    • A process for the production of dialkyl succinate from a bio-succinic acid feedstock commencing by feeding bio-succinic acid to a reaction distillation column to enable esterification of the succinic acid. The feedstock is passed co-currently with upflowing alkanol such that an esterification reaction occurs. An overhead vapor stream is removed from the reaction distillation column comprising di-ester, alkanol, water of esterification and organic components. The vapor stream is sent to an alkanol separation column where alkanol is separated from the water of esterification and organic components. A side draw is removed from the alkanol separation column comprising partially immiscible organic and aqueous phases. The side draw is passed to a phase separation apparatus where the partially immiscible organic and aqueous phases are separated. The organic phase is passed to a column where the dialkyl succinate is recovered from residual water and other organic components.
    • 一种由生物琥珀酸原料生产琥珀酸二烷基酯的方法,包括以下步骤:将生物琥珀酸加入到在温度和压力下操作的反应蒸馏区塔底部或附近的点处,以使琥珀酸酯化 酸并使上述物流与上流烷醇并流,使得发生所述酯化反应:从包含二酯,链烷醇,酯化水和有机组分的反应蒸馏区塔顶部或附近除去顶部蒸气流,并通过 将所述料流输送至链烷醇分离塔,其中将烷醇与酯化水和有机组分分离; 从链烷醇分离塔的进料点之下的点去除侧链,所述侧馏分包含部分不混溶的有机相和水相; 使所述侧馏分通过相分离装置,其中部分不混溶的有机相和水相被分离; 使所述有机相通过柱,其中琥珀酸二烷基酯与残余水和其它有机组分分离; 并回收琥珀酸二烷基酯。