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    • 2. 发明授权
    • Process and apparatus for recovering a lower alcohol from a mixture
thereof with water
    • 从水的混合物中回收低级醇的方法和装置
    • US5138105A
    • 1992-08-11
    • US779465
    • 1991-10-18
    • Masao NinomiyaMasao KikuchiMasaru UmedaMotojuro Yamaya
    • Masao NinomiyaMasao KikuchiMasaru UmedaMotojuro Yamaya
    • B01D53/22B01D12/00C07C29/76H01L21/304
    • C07C29/76
    • A lower alcohol is recovered from a mixed liquid thereof with water, derived from a vapor drying procedure for a water-wetted article, for example, a water-washed lens or semiconductor wafer, by feeding the mixed liquid of a lower alcohol with water from the vapor drying procedure to a vaporizer; vaporizing the mixed liquid; feeding the mixed vapor into a gas-separating module comprising at least one gas-separating membrane, for example, composed of a aromatic polyimide hollow fiber, which allows a selective permeation of water vapor from a feed side to a permeated side therethrough, withdrawing a non-permeated vapor fraction containing the lower alcohol in an increased concentration from the feed side, and converting the vapor fraction to a high purity lower alcohol liquid by cooling, while discharging a permeated vapor fraction containing water in an increased concentration from the permeated side.
    • 通过将来自水润湿物品例如水洗透镜或半导体晶片的蒸气干燥程序从其与水的混合液体中回收低级醇,通过将低级醇的混合液体与水 蒸发器的蒸气干燥程序; 蒸发混合液体; 将混合蒸气输送到气体分离模块中,所述气体分离模块包括至少一个气体分离膜,例如由芳族聚酰亚胺中空纤维组成的气体分离膜,其允许水蒸汽从进料侧到渗透侧的选择性渗透通过其抽出 含有从进料侧增加浓度的低级醇的非透过蒸气馏分,并通过冷却将蒸气馏分转化成高纯度低级醇液体,同时从渗透侧排出含有浓度增加浓度的水的透过蒸气馏分。