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    Distillation sequence for the purification and recovery of hydrocarbons
    7.
    发明授权
    Distillation sequence for the purification and recovery of hydrocarbons 有权
    纯化和回收烃的蒸馏顺序

    公开(公告)号：US07311813B2

    公开(公告)日：2007-12-25

    申请号：US10393460

    申请日：2003-03-20

    申请人： Rian Reyneke ,  Michael Foral ,  Christos G. Papadopoulos ,  Jeffrey S. Logsdon ,  Wayne W. Y. Eng ,  Guang-Chung Lee ,  Ian Sinclair

    发明人： Rian Reyneke ,  Michael Foral ,  Christos G. Papadopoulos ,  Jeffrey S. Logsdon ,  Wayne W. Y. Eng ,  Guang-Chung Lee ,  Ian Sinclair

    IPC分类号： B01D3/02 ,  B01D3/06 ,  B01D3/14

    CPC分类号： F25J3/0238 ,  B01D3/146 ,  C10G70/04 ,  C10G70/041 ,  C10G2400/20 ,  F25J3/0219 ,  F25J3/0242 ,  F25J3/0252 ,  F25J2200/38 ,  F25J2210/12 ,  F25J2215/62 ,  F25J2215/64

    摘要： This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.

    摘要翻译： 本发明是用于从裂化气体中分离和纯化乙烯的改进的蒸馏顺序。 烃进料进入C2分配塔。 C2分配器柱的顶部热耦合到乙烯分配器柱，并且C2分配器塔的底部液体供给脱乙烷塔。 C2分配器柱使用常规的再沸器。 乙烯分配器的顶部与脱甲烷塔热耦合，并且乙烯分配器的底部液体供给C2分离塔。 乙烯分配塔利用常规的再沸器。 脱乙烷塔和C2分离塔也可以以比C2分配塔，乙烯分配塔和脱甲烷塔更低的压力热耦合和操作。 或者，烃进料进入脱乙烷塔。 脱乙烷塔的顶部与乙烯分配塔热偶合，乙烯分配塔利用常规的再沸器。 乙烯分配塔的顶部与脱甲烷塔热耦合，并且乙烯分配器塔的底部液体供应C2分离塔。 C2分离塔在基本上低于乙烯分配塔，脱甲烷塔和脱乙烷塔的压力下运行。

    Low capital implementation of distributed distillation in ethylene recovery
    10.
    发明授权
    Low capital implementation of distributed distillation in ethylene recovery 有权
    低资本实施乙烯回收分配蒸馏

    公开(公告)号：US07129387B2

    公开(公告)日：2006-10-31

    申请号：US10393029

    申请日：2003-03-20

    申请人： Rian Reyneke ,  Michael J. Foral ,  Guang-Chung Lee

    发明人： Rian Reyneke ,  Michael J. Foral ,  Guang-Chung Lee

    IPC分类号： C07C7/04 ,  B01D3/14

    CPC分类号： B01D3/322 ,  B01D3/14 ,  B01D3/141 ,  C07C7/04 ,  C07C11/04

    摘要： An apparatus for recovering ethylene from a hydrocarbon feed stream, where the apparatus is a single distillation column pressure shell encasing an upper region and a lower region. The upper region houses an ethylene distributor rectifying section and the lower region houses a C2 distributor section and an ethylene distributor stripping section. Vapor passes from the lower region into the upper region, and liquid passes from the upper region to the lower region. The process for recovering the ethylene is also disclosed. The hydrocarbon feed stream is introduced into the C2 distributor section, and after a series of stripping and refluxing steps, distinct hydrocarbon products are recovered from the C2 distributor section, the ethylene distributor stripping section, and the ethylene distributor rectifying section, respectively.

    摘要翻译： 一种用于从烃进料流中回收乙烯的装置，其中装置是包围上部区域和下部区域的单个蒸馏塔压力壳。 上部区域容纳乙烯分配器整流部分，下部区域容纳C2分配器部分和乙烯分配器剥离部分。 蒸气从下部区域进入上部区域，液体从上部区域流到下部区域。 还公开了回收乙烯的方法。 烃进料流被引入到C2分配器部分中，并且在一系列汽提和回流步骤之后，分别从C2分配器段，乙烯分配器汽提段和乙烯分配器整流段回收不同的烃产物。