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公开(公告)号:US06448438B1
公开(公告)日:2002-09-10
申请号:US09493011
申请日:2000-01-28
IPC分类号: C07C5121
摘要: A method for purifying acrylic acid, which comprises carrying out dehydration distillation of an aqueous solution of acrylic acid by means of a dehydration column, wherein a distillation column having a theoretical plate number of at least 3 plates is used as the dehydration column, and the operational temperature of a site corresponding to the second theoretical plate is adjusted to be from 50 to 78° C.
摘要翻译: 一种纯化丙烯酸的方法,其包括用脱水塔对丙烯酸水溶液进行脱水蒸馏,其中使用具有至少3个板的理论塔板数的蒸馏塔作为脱水塔, 将与第二理论塔板相对应的部位的工作温度调整为50〜78℃。