Process for the selective preparation of DIB from an i-butene-containing C4 stream
    2.
    发明授权
    Process for the selective preparation of DIB from an i-butene-containing C4 stream 有权
    用于从含有1-丁烯的C 4流中选择性制备DIB的方法

    公开(公告)号:US06632972B2

    公开(公告)日:2003-10-14

    申请号:US09930267

    申请日:2001-08-16

    IPC分类号: C07C206

    摘要: The invention relates to a process for preparing diisobutylene (DIB) from an i-butene-containing C4 raffinate I, in which the C4 stream is passed through a first hydroisomerization reactor (A) and a fractionation column (B) and is thus largely freed of 1-butene and 2-butene. It is subsequently dimerized over an acidic catalyst installed in a reactive column (E). The feed stream to this reactive column contains not only i-butene but also butanes which make the reaction temperature in the fixed bed controllable by removal of the heat of reaction. In the fractionation column (B), a side stream can be subjected to a further hydroisomerization in a reactor (C).

    摘要翻译: 本发明涉及一种由含异丁烯的C 2 H 4 Cl 2萃取液I制备二异丁烯(DIB)的方法,其中C PDAT> 4 通过第一加氢异构化反应器(A)和分馏塔(B),使SB> 流大量排出1-丁烯和2-丁烯。 随后在安装在反应性柱(E)中的酸性催化剂上二聚。 该反应性塔的进料流不仅含有异丁烯,而且还含有通过除去反应热而使得固定床中的反应温度可控的丁烷。 在分馏塔(B)中,侧流可以在反应器(C)中进一步加氢异构化。