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    • 1. 发明公开
    • METHOD FOR PREPARING METHYL FORMATE AND COPRODUCING DIMETHYL ETHER
    • 制备甲酸甲酯和生产二甲醚的方法
    • EP3222609A1
    • 2017-09-27
    • EP14906419.8
    • 2014-11-17
    • Dalian Institute Of Chemical Physics Chinese Academy of Sciences
    • NI, YoumingZHU, WenliangLIU, YongLIU, HongchaoLIU, ZhongminLI, LinaLIU, ShipingZHOU, Hui
    • C07C67/00C07C69/06C07C41/50C07C43/30C07C43/04
    • C07C67/39B01J29/084B01J29/18B01J29/40B01J29/65B01J29/7007B01J29/7038B01J31/10B01J39/05B01J39/20B01J2231/50B01J2231/70C07C41/18C07C41/50C07C43/04C07C43/30C07C67/00C07C69/06
    • The present invention provides a method for preparing methyl formate and coproducing dimethyl ether. A raw material containing formaldehyde and methanol is introduced into a First Reaction Region contacting with a Catalyst A to react, and the post-reaction material is separated to obtain Constituent I.
      The Constituent I is introduced into a Second Reaction Region contacting with a Catalyst B to react, and the post-reaction material separating is separated to obtain methyl formate, dimethyl ether and Constituent II. At least 1% of dimethyl ether is taken as product, and the rest of dimethyl ether is recycled to the First Reaction Region. The Constituent II is recycled to the Second Reaction Region. In the raw material, the molar ratio range of formaldehyde to methanol is from 1:4 to 1:0.05, and the molar of formaldehyde and methanol are calculated according to the molar of carbon atoms contained in formaldehyde and methanol, respectively. The weight hourly space velocity of formaldehyde in the raw material ranges from 0.01 h -1 to 15.0 h -1 . The reaction temperature of the First Reaction Region ranges from 50°C to 100°C. The reaction temperature range of the Second Reaction Region is from 50°C to 200°C, and the reaction pressure range is from 0.1 MPa to 10 MPa. Each component is gaseous phase and/or liquid phase, independently. The method shows benefits, including a long catalyst life, a mild reaction condition, a high utilization ratio of raw materials, an achievement of continuous production and an application potential of large scale industrial.
    • 本发明提供了一种制备甲酸甲酯和联产二甲醚的方法。 将含有甲醛和甲醇的原料引入到与催化剂A接触的第一反应区中以进行反应,并将后反应物分离以获得组分I.将组分I引入到与催化剂B接触的第二反应区中 进行反应,分离后反应物分离得到甲酸甲酯,二甲醚和组分II。 将至少1%的二甲醚作为产物,其余的二甲醚再循环至第一反应区。 组分II被回收到第二反应区。 在原料中,甲醛与甲醇的摩尔比范围为1:4〜1:0.05,甲醛与甲醇的摩尔数分别根据甲醛与甲醇中所含碳原子的摩尔数计算。 原料中甲醛的重时空速范围为0.01 h-1至15.0 h-1。 第一反应区的反应温度范围为50℃至100℃。 第二反应区域的反应温度范围为50℃至200℃,反应压力范围为0.1MPa至10MPa。 每个组分独立地是气相和/或液相。 该方法具有催化剂使用寿命长,反应条件温和,原料利用率高,连续生产成本高,具有大规模工业应用潜力等优点。