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    • 4. 发明申请
    • Method of separating target gas
    • 分离目标气体的方法
    • US20050268780A1
    • 2005-12-08
    • US10523506
    • 2003-08-06
    • Toshihiko SumidaHiroaki SasanoMasanori Miyake
    • Toshihiko SumidaHiroaki SasanoMasanori Miyake
    • B01D53/04B01D53/047B01D53/02
    • B01D53/047B01D53/261B01D2253/104B01D2253/108B01D2256/16B01D2257/102B01D2257/504B01D2257/7025B01D2257/80B01D2259/40015B01D2259/40024B01D2259/40026B01D2259/40032B01D2259/40045B01D2259/40052B01D2259/40071B01D2259/40075B01D2259/403Y02C10/08Y02C20/20
    • The present invention is a gas separation method using a plurality of adsorption columns packed with an adsorbent. A cycle including a series of steps (adsorption, first pressure reduction, second pressure reduction, desorption, scrubbing, and repressurization) is repeated in each adsorption column. In the adsorption step, a gas mixture (G1) is introduced into a column (A) so as to cause the adsorbent to adsorb unnecessary components, and a product gas (G2) is led outside of the column (FIG. 3A). In the first pressure reduction step, the internal pressure of the column (A) is reduced by lead-out of a gas (G3) (FIG. 4A). In the second pressure reduction step, the internal pressure of the column (A) is further reduced by lead-out of the gas (FIG. 4B). In the desorption step, the unnecessary components are desorbed from the adsorbent and purged from the column (A) (FIG. 4C). In the scrubbing step, introduction of the gas (G3) and purging of the gas (G4) are performed simultaneously (FIG. 5A). In the repressurizing step, the internal pressure of the column (A) is raised by introducing the gas (G3) (FIG. 5B). The gas (G3) that is led out from the column (A) during the first pressure reduction step is introduced into the column (C) during the scrubbing step (FIG. 4A), and the gas (G3) that is led out from the column (A) during the second pressure reduction step is introduced into the column (C) during the repressurizing step (FIG. 4B).
    • 本发明是使用填充有吸附剂的多个吸附塔的气体分离方法。 在每个吸附塔中重复包括一系列步骤(吸附,第一次压力降低,第二次压力降低,解吸,洗涤和再加压)的循环。 在吸附工序中,将气体混合物(G 1)引入塔(A),使吸附剂吸附不需要的成分,将产物气体(G 2)引入塔外(图3A )。 在第一减压工序中,塔(A)的内压通过气体导出(G 3)而减少(图4A)。 在第二减压步骤中,塔(A)的内部压力通过气体引出而进一步减小(图4B)。 在解吸步骤中,不必要的组分从吸附剂中解吸并从柱(A)中清除(图4C)。 在洗涤步骤中,同时进行气体(G 3)的引入和气体的净化(G 4)(图5A)。 在再加压步骤中,通过引入气体(G 3)使柱(A)的内压升高(图5B)。 在洗涤步骤(图4A)期间,在第一减压步骤中从塔(A)引出的气体(G 3)被引入塔(C),而气体(G 3) 在再加压步骤(图4B)期间,在第二减压步骤期间从塔(A)引出的塔(C)被引入塔(C)。