公开(公告)号：US20140128652A1

公开(公告)日：2014-05-08

申请号：US14129410

申请日：2012-06-06

申请人： Fumio Yamakawa ,  Kei Tatesaki ,  Takashi Nakagawa

发明人： Fumio Yamakawa ,  Kei Tatesaki ,  Takashi Nakagawa

IPC分类号： C07C2/06

CPC分类号： C07C2/06 ,  C07C2/12 ,  C07C7/04 ,  C07C11/02

摘要： There is provided a process for producing high-purity diisobutylene with a high reaction selectivity in which a mixed C4 fraction is contacted with an oligomerization catalyst to subject isobutene to oligomerization at one stage. The present invention relates to a process for producing diisobutylene by contacting a mixed C4 fraction as a raw material with a solid acid catalyst, which includes the steps of (a) isobutene oligomerization; (b) subjecting the resulting reaction products to distillation to separate the unreacted C4 fraction and an oligomer fraction including a C8 fraction produced from each other; and (c) purification of diisobutylene from the C8 fraction by distillation, in which a conversion of isobutene contained in the mixed C4 fraction upon conducting the step (a) is controlled to a range of from 60 to 95%.

摘要翻译： 提供了一种生产具有高反应选择性的高纯度二异丁烯的方法，其中混合的C4级分与低聚催化剂接触以使异丁烯在一个阶段进行低聚。 本发明涉及通过使作为原料的混合C4馏分与固体酸催化剂接触来制备二异丁烯的方法，其包括以下步骤：（a）异丁烯低聚; （b）使所得反应产物蒸馏以分离出未反应的C4馏分和包含彼此产生的C8馏分的低聚物馏分; 和（c）通过蒸馏从C8馏分纯化二异丁烯，其中在步骤（a）中将混合的C4馏分中所含的异丁烯的转化率控制在60至95％的范围内。