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    • 10. 发明授权
    • Process for preparing highly pure raffinate II and Methyl tert-butyl ether
    • 制备高纯度萃余液II和甲基叔丁基醚的方法
    • US06657090B2
    • 2003-12-02
    • US09981985
    • 2001-10-19
    • Armin RixGerda GrundWilfried Bueschken
    • Armin RixGerda GrundWilfried Bueschken
    • C07C4109
    • B01D3/009C07C7/14891C07C11/09C07C41/06C07C41/42C07C2531/08C10L1/023Y02P20/127C07C43/046
    • The present invention provides a process, which includes: contacting at least one C4-hydrocarbon stream which includes isobutene with methanol over at least one acid catalyst and preparing methyl tert-butyl ether (MTBE) and a substantially isobutene-free C4-hydrocarbon mixture; wherein in a first stage in one or more first reactors, the isobutene reacts with the methanol over an acid catalyst to form an equilibrium mixture which includes MTBE, remaining isobutene and methanol; the equilibrium mixture is fed to a second stage which includes a reactive distillation column; and in the reactive distillation column, the remaining isobutene reacts with methanol over an acid ion exchange resin to form MTBE; wherein the reactive distillation column is operated at a pressure ranging from 3 to 15 bar abs., a reaction zone temperature ranging from 55° C. to 75° C., and a reflux ratio of less than 1. The present invention also provides a method of making gasoline, which includes the above process and contacting the MTBE with a fuel.
    • 本发明提供了一种方法,其包括:使至少一种包含异丁烯的C 4烃流与甲醇在至少一种酸催化剂上接触并制备甲基叔丁基醚(MTBE)和基本上不含异丁烯的C 4烃混合物; 其中在一个或多个第一反应器中的第一阶段中,异丁烯通过酸催化剂与甲醇反应形成包括MTBE,剩余的异丁烯和甲醇的平衡混合物;将平衡混合物进料到第二阶段,该第二阶段包括反应性蒸馏塔 ; 在反应蒸馏塔中,剩余的异丁烯通过酸离子交换树脂与甲醇反应以形成MTBE;其中反应蒸馏塔在3至15巴绝对压力的范围内操作,反应区温度为55℃ 至75℃,回流比小于1.本发明还提供一种制备汽油的方法,其包括上述方法并使MTBE与燃料接触。