Process for recovery of propylene from a propane dehydrogenation process

    公开(公告)号:US11198661B2

    公开(公告)日:2021-12-14

    申请号:US17016512

    申请日:2020-09-10

    申请人: Rian Reyneke

    发明人: Rian Reyneke

    摘要: In a propane dehydrogenation (PDH) process, the purpose of the deethanizer and chilling train systems is to separate the cracked gas into a methane-rich tail gas product, a C2, and a C3 process stream. By the use of staged cooling, process-to-process inter-change against propane feed to the reactor and use of high efficiency heat exchangers and distributed distillation techniques, refrigeration power requirements are reduced and a simple and reliable design is provided by the process described herein.

    PROCESS FOR RECOVERY OF PROPYLENE FROM A PROPANE DEHYDROGENATION PROCESS

    公开(公告)号:US20210070675A1

    公开(公告)日:2021-03-11

    申请号:US17016512

    申请日:2020-09-10

    申请人: Rian Reyneke

    发明人: Rian Reyneke

    摘要: In a propane dehydrogenation (PDH) process, the purpose of the deethanizer and chilling train systems is to separate the cracked gas into a methane-rich tail gas product, a C2, and a C3 process stream. By the use of staged cooling, process-to-process inter-change against propane feed to the reactor and use of high efficiency heat exchangers and distributed distillation techniques, refrigeration power requirements are reduced and a simple and reliable design is provided by the process described herein.

    Distillation sequence for the purification and recovery of hydrocarbons
    5.
    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

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

    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。

    System for recovery of propylene from a propane dehydrogenation process

    公开(公告)号:US11548843B2

    公开(公告)日:2023-01-10

    申请号:US17510580

    申请日:2021-10-26

    申请人: Rian Reyneke

    发明人: Rian Reyneke

    摘要: In a propane dehydrogenation (PDH) process, the purpose of the deethanizer and chilling train systems is to separate the cracked gas into a methane-rich tail gas product, a C2, and a C3 process stream. By the use of staged cooling, process-to-process inter-change against propane feed to the reactor and use of high efficiency heat exchangers and distributed distillation techniques, refrigeration power requirements are reduced and a simple and reliable design is provided by the process described herein.