DISPLACEMENT DESORPTION PROCESS FOR LIGHT OLEFIN SEPARATION
    4.
    发明申请
    DISPLACEMENT DESORPTION PROCESS FOR LIGHT OLEFIN SEPARATION 有权
    用于轻油分离的位移解吸过程

    公开(公告)号:US20130206581A1

    公开(公告)日:2013-08-15

    申请号:US13819007

    申请日:2011-08-26

    IPC分类号: C07C7/00

    摘要: A process and apparatus for separating an olefin from mixed gases containing light olefins is provided. The process includes adsorbing the olefin of an olefin-containing mixed gas in an adsorption column packed with an adsorbent selectively adsorbing the olefin; discharging gases other than the olefin through the outlet of the adsorption column; desorbing the adsorbed olefin by displacement using a desorbent, and separating the olefin from the desorbent, thereby producing a high-purity olefin. The apparatus includes adsorption columns packed with an adsorbent selectively adsorbing an olefin, and at least two distillation columns for separating an olefin/desorbent mixture and an olefin poor stream/desorbent into their components. If the olefin concentration of the off-gas from an olefin rinse step is higher than that of a raw material gas, recovering the olefin from the off-gas is carried out before or after the adsorption step.

    摘要翻译: 提供了一种用于从含有轻质烯烃的混合气体中分离烯烃的方法和装置。 该方法包括在填充有选择性吸附烯烃的吸附剂的吸附塔中吸附含烯烃混合气体的烯烃; 通过吸附塔的出口排出除烯烃以外的气体; 使用解吸剂通过置换解吸吸附的烯烃,并从解吸剂中分离烯烃,从而产生高纯度烯烃。 该装置包括填充有选择性吸附烯烃的吸附剂的吸附塔和用于将烯烃/脱附剂混合物和烯烃不良物流/解吸剂分离成其组分的至少两个蒸馏塔。 如果来自烯烃漂洗步骤的废气的烯烃浓度高于原料气体的烯烃浓度,则在吸附步骤之前或之后进行从废气中回收烯烃。