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    • 4. 发明申请
    • CRACKING OF DICYCLOPENTADIENE
    • 二烯丙基二胺的裂解
    • US20080097132A1
    • 2008-04-24
    • US11571413
    • 2004-06-30
    • John C. Prindle JrDru J. Manuel
    • John C. Prindle JrDru J. Manuel
    • C07C5/31
    • C07C4/22C07C13/15
    • This invention provides a process for forming monomers from a dimer, wherein the dimer is dicyclopentadiene, di(methylcyclopentadiene), di(ethyleyclopentadiene), or a mixture of any two or more of these. The process comprises i) heating a liquid mixture comprising at least one dimer and at least one liquefying agent in a vaporization zone to at least the vaporization temperature of said mixture to form a vaporized mixture, wherein the vaporization zone consists essentially of a substantially straight conduit in which said liquid mixture occupies less than the entire cross sectional area of said conduit; and ii) introducing at least a portion of the vaporized mixture from i) into a cracking zone such that monomers are formed. This process is conducted at about atmospheric pressure.
    • 本发明提供了从二聚体形成单体的方法,其中二聚体是二环戊二烯,二(甲基环戊二烯),二(乙基环戊二烯)或其中任何两种或更多种的混合物。 该方法包括:i)在蒸发区中将包含至少一种二聚体和至少一种液化剂的液体混合物加热至至少所述混合物的蒸发温度以形成蒸发的混合物,其中蒸发区基本上由基本上直的导管 其中所述液体混合物占据小于所述导管的整个横截面面积; 和ii)将来自i)的蒸发混合物的至少一部分引入裂化区,从而形成单体。 该过程在约大气压下进行。
    • 10. 发明授权
    • Process for recovery of cyclopentadienes
    • 回收环戊二烯的方法
    • US4522688A
    • 1985-06-11
    • US545661
    • 1983-10-26
    • Akira YokogawaAsao TakahashiIsao MaruyamaTakao Hosaka
    • Akira YokogawaAsao TakahashiIsao MaruyamaTakao Hosaka
    • C07C1/00C07C4/22C07C7/04C07C13/15C07C67/00B01D3/14
    • C07C13/15C07C4/22C07C7/04C07C2101/10
    • The process gives highly pure cyclopentadiene and methylcyclopentadiene from a cracked gasoline fraction. The merit of the process is that cyclopentadiene and methylcyclopentadiene are recovered by adding a simple distillation system to a conventional cracked gasoline treating plant without altering the plant and operating conditions thereof. An internal reflux stream is withdrawn from the stripping section of a BTX column of a conventional cracked gasoline treating plant, and is sent to a depolymerization-distillation column operated at a bottom temperature of 160.degree.-230.degree. C. The overhead stream of the column is sent to a cyclopentadiene column operated at a bottom temperature of 160.degree.-230.degree. C. Cyclopentadiene is recovered from the overhead of the column, and the bottom stream is sent to methylcyclopentadiene column operated at a bottom temperature of 170.degree.-210.degree. C. Methylcyclopentadiene is recovered from the overhead of the column.
    • 该方法从裂化汽油馏分中提供高度纯的环戊二烯和甲基环戊二烯。 该方法的优点是通过向常规的裂化汽油处理装置添加简单的蒸馏系统而不改变其设备和操作条件来回收环戊二烯和甲基环戊二烯。 将内部回流物流从常规裂化汽油处理装置的BTX柱的汽提段中取出,并送入在塔底温度为160°-230℃下操作的解聚 - 蒸馏塔。塔顶馏出物流 送入在160°-230℃的底部温度下操作的环戊二烯塔。从塔顶塔顶回收环戊二烯,将塔底物流送入甲基环戊二烯塔,底部温度为170°-210℃ 从柱的顶部回收甲基环戊二烯。