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    • 62. 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。
    • 64. 发明授权
    • Process for the preparation of 3,3,5-trimethylcyclohexanone
    • 制备3,3,5-三甲基环己酮的方法
    • US5728891A
    • 1998-03-17
    • US668356
    • 1996-06-26
    • Wilfried BueschkenJuergen Hummel
    • Wilfried BueschkenJuergen Hummel
    • B01J23/44C07B61/00C07C45/62C07C49/403C07C49/303
    • C07C45/62
    • A process for the preparation of 3,3,5-trimethylcyclohexanone by catalytic hydrogenation of isophorone, wherein the hydrogenation is carried out in a plurality of two or more series-connected loops, wherein each loop involves the use of one reactor, which comprises: (a) feeding isophorone and hydrogen to an upper part of a reactor to catalytically hydrogenate said isophorone to produce a hydrogenation product, (b) recycling a portion of said hydrogenation product back into said upper part of said reactor, (c) feeding the remainder of said hydrogenation product from said reactor to an upper part of a subsequent reactor wherein isophorone is catalytically hydrogenated to produce a subsequent hydrogenation product, and wherein a portion of said subsequent hydrogenation product has been recycled and is fed with said remainder of said hydrogenation product to said upper part of said subsequent reactor, (d) repeating step (c) until the subsequent reactor is the last reactor, (e) recovering the remainder of said subsequent hydrogenation product from said last reactor, and (f) obtaining 3,3,5-trimethylcyclohexanone from the product of step (e).
    • 通过异佛尔酮的催化氢化制备3,3,5-三甲基环己酮的方法,其中氢化在多个两个或更多个串联连接的环中进行,其中每个环包括使用一个反应器,其包含: (a)将异佛尔酮和氢气加入到反应器的上部以催化氢化所述异佛尔酮以产生氢化产物,(b)将所述氢化产物的一部分再循环回所述反应器的上部,(c) 的所述氢化产物从所述反应器到后续反应器的上部,其中异佛尔酮被催化氢化以产生随后的氢化产物,并且其中所述后续氢化产物的一部分已被再循环并与所述剩余的所述氢化产物一起加入 所述后续反应器的所述上部,(d)重复步骤(c),直到随后的反应器为最后的反应器,(e)回收t 剩余的来自所述最后一个反应器的所述随后的氢化产物,和(f)从步骤(e)的产物获得3,3,5-三甲基环己酮。