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    • 6. 发明申请
    • METHOD AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION
    • 通过低温蒸馏分离空气的方法和装置
    • WO2011141652A3
    • 2012-12-13
    • PCT/FR2011050647
    • 2011-03-25
    • AIR LIQUIDEZICK GOLO
    • ZICK GOLO
    • F25J3/04
    • F25J3/08B01D3/00F25J3/0406F25J3/0409F25J3/04454F25J3/0463F25J2200/08F25J2200/32F25J2215/50F25J2245/42F25J2290/12
    • In a method for the cryogenic distillation of air to produce gaseous oxygen with a purity of between 75 and 95 mol% and a pressure lower than 5 bar abs with a triple column comprising a high-pressure column (5), a medium-pressure column (3) and a low-pressure column (7), the medium-pressure column being wholly or partially thermally coupled to the low-pressure column by means of a first dephlegmator, air being sent to the medium-pressure column, a vessel liquid is sent from the high pressure column to the low-pressure column and/or to the top of the medium-pressure column, a head gas is sent from the medium-pressure column to the bottom of the high-pressure column via a compressor, a vessel liquid from the high-pressure column is sent to the top of the low-pressure column, a gas is withdrawn from the top of the low-pressure column and a fluid containing between 75 and 95 mol% of oxygen is withdrawn from the bottom of the low-pressure column, and the high-pressure column is also wholly or partially thermally coupled to the low-pressure column by means of a second dephlegmator.
    • 在空气的低温蒸馏的方法中,使用含有高压塔(5)的三柱,中压塔(5),纯度为75-95摩尔%和低于5巴绝对压力的气态氧 (3)和低压塔(7),中压塔通过第一分馏塔全部或部分地热耦合到低压塔,空气被送到中压塔,容器液体 从高压塔送到低压塔和/或中压塔的顶部,通过压缩机将中压塔从高压塔送到高压塔的底部, 来自高压塔的容器液体被送到低压塔的顶部,从低压塔的顶部排出气体,并且含有75-95mol%的氧的流体从 低压塔的底部,高压塔也是完全的 或通过第二分凝器部分地热耦合到低压塔。