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    • 3. 发明授权
    • Process for the production of cumene
    • 异丙苯生产工艺
    • US4343957A
    • 1982-08-10
    • US218333
    • 1980-12-19
    • Emanuele SartorioBenedetto CalcagnoFulvio TrombettiMarcello Ghirga
    • Emanuele SartorioBenedetto CalcagnoFulvio TrombettiMarcello Ghirga
    • C07C2/70C07C2/68
    • C07C2/70C07C2527/173
    • Production of cumene by alkylation of benzene with propylene on a solid phosphoric acid catalyst, using in a first step a plurality of catalyst beds in series and in a second step a single catalyst bed, using an overall benzene/propylene molar ratio of at least 5:1, continuously delivering the benzene to the first bed, continuously delivering a series of streams of liquid propylene respectively to the first bed and, in the form of a cold stream, between each pair of contiguous beds, and carrying out a partial recycle of reaction products of the second step as a cold stream between the first and the second step, and using a benzene/propylene molar ratio higher than 13:1 at the inlet of each bed of the first step, and higher than 25:1 at the inlet of the bed of the second step.
    • 通过在固体磷酸催化剂上用丙烷烷基化苯来生产枯烯,在第一步中使用多个催化剂床串联,在第二步中使用单一催化剂床,使用总苯/丙烯摩尔比为至少5 :1,连续地将苯输送到第一床,连续地将一系列液态丙烯流分别连续地输送到第一床,并以冷流的形式在每对连续的床之间进行,并进行部分循环 在第一步骤和第二步骤之间的第二步骤的反应产物作为冷流,并且在第一步骤的每个床的入口处使用高于13:1的苯/丙烯摩尔比,并且在第 第二步床的入口。