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
    • 7. 发明授权
    • Process for preparing carboxylic esters by reactive distillation
    • 通过反应蒸馏制备羧酸酯的方法
    • US08455676B2
    • 2013-06-04
    • US13088822
    • 2011-04-18
    • Helmut KronemayerEllen DahlhoffAndreas Lanver
    • Helmut KronemayerEllen DahlhoffAndreas Lanver
    • C07C67/02
    • C07C67/03B01D3/009Y02P20/127C07C69/06
    • In a process for preparing carboxylic esters by transesterification, a first feed stream comprising a first carboxylic ester, e.g. methyl formate, is introduced laterally into a reaction column at least one first feed point located between top and bottom of the reaction column and a second feed stream comprising a first alcohol, e.g. ethanol, is introduced laterally into the reaction column at a second feed point located above the first feed point and are reacted in a reaction zone of the reaction column to form a second carboxylic ester and a second alcohol. The first alcohol has a higher molecular weight than the second alcohol. A product fraction comprising the second carboxylic ester and unreacted first carboxylic ester is taken off at an offtake point located above the second feed point. At the bottom of the reaction column, a bottom fraction comprising the second alcohol and unreacted first alcohol is taken off. The product fraction is separated by distillation at a pressure which is different from the pressure in the reaction column into second carboxylic ester and a fraction comprising unreacted first carboxylic ester and the fraction comprising unreacted first carboxylic ester is at least partly recirculated to the reaction zone.
    • 在通过酯交换制备羧酸酯的方法中,第一进料流包含第一羧酸酯,例如 甲酸甲酯在反应塔中横向引入位于反应塔顶部和底部之间的至少一个第一进料点和第二进料流,所述第二进料流包含第一醇。 乙醇,在位于第一进料点上方的第二进料点侧向引入反应塔中,并在反应塔的反应区中反应形成第二个羧酸酯和第二个醇。 第一种醇的分子量比第二种醇高。 包含第二羧酸酯和未反应的第一羧酸酯的产物级分在位于第二进料点上方的出料点处脱出。 在反应塔的底部,除去包含第二醇和未反应的第一醇的底部馏分。 通过在不同于反应塔中的压力的​​压力下将产物馏分分离成第二羧酸酯,并且包含未反应的第一羧酸酯的馏分和包含未反应的第一羧酸酯的馏分至少部分地再循环到反应区。
    • 10. 发明申请
    • PROCESS FOR PREPARING CARBOXYLIC ESTERS BY REACTIVE DISTILLATION
    • 通过反应蒸馏制备羧酸酯的方法
    • US20110257426A1
    • 2011-10-20
    • US13088822
    • 2011-04-18
    • Helmut KRONEMAYEREllen DAHLHOFFAndreas LANVER
    • Helmut KRONEMAYEREllen DAHLHOFFAndreas LANVER
    • C07C67/02
    • C07C67/03B01D3/009Y02P20/127C07C69/06
    • In a process for preparing carboxylic esters by transesterification, a first feed stream comprising a first carboxylic ester, e.g. methyl formate, is introduced laterally into a reaction column at least one first feed point located between top and bottom of the reaction column and a second feed stream comprising a first alcohol, e.g. ethanol, is introduced laterally into the reaction column at a second feed point located above the first feed point and are reacted in a reaction zone of the reaction column to form a second carboxylic ester and a second alcohol. The first alcohol has a higher molecular weight than the second alcohol. A product fraction comprising the second carboxylic ester and unreacted first carboxylic ester is taken off at an offtake point located above the second feed point. At the bottom of the reaction column, a bottom fraction comprising the second alcohol and unreacted first alcohol is taken off. The product fraction is separated by distillation at a pressure which is different from the pressure in the reaction column into second carboxylic ester and a fraction comprising unreacted first carboxylic ester and the fraction comprising unreacted first carboxylic ester is at least partly recirculated to the reaction zone.
    • 在通过酯交换制备羧酸酯的方法中,第一进料流包含第一羧酸酯,例如 甲酸甲酯在反应塔中横向引入位于反应塔顶部和底部之间的至少一个第一进料点和第二进料流,所述第二进料流包含第一醇。 乙醇,在位于第一进料点上方的第二进料点侧向引入反应塔中,并在反应塔的反应区中反应形成第二个羧酸酯和第二个醇。 第一种醇的分子量比第二种醇高。 包含第二羧酸酯和未反应的第一羧酸酯的产物级分在位于第二进料点上方的出料点处脱出。 在反应塔的底部,除去包含第二醇和未反应的第一醇的底部馏分。 通过在不同于反应塔中的压力的​​压力下将产物馏分分离成第二羧酸酯,并且包含未反应的第一羧酸酯的馏分和包含未反应的第一羧酸酯的馏分至少部分地再循环到反应区。