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    • 3. 发明申请
    • SEPARATION AND/OR RECOVERY OF PROPYL BROMIDE
    • 丙烯酰胺的分离和/或回收
    • WO2007143519A1
    • 2007-12-13
    • PCT/US2007/070168
    • 2007-06-01
    • ALBEMARLE CORPORATIONHARKINS, Alvin, E.TORRES, James, E.ANDERSON, Keith, G.
    • HARKINS, Alvin, E.TORRES, James, E.ANDERSON, Keith, G.
    • C07C17/38
    • C07C17/38C07C17/08C07C17/383C07C19/075
    • Described is a process for separating an organic phase comprising mainly propyl bromide from a crude reaction mixture formed by free-radical catalyzed hydrobromination of propylene with hydrogen bromide. The process comprises (A) feeding cold water into an upper or mid- portion of a packed column; (B) concurrently feeding the crude reaction mixture into an upper portion and/or mid-portion of the column so that the water contacts the crude reaction mixture; to form a mixture of (i) an acidic aqueous phase comprising aqueous hydrogen bromide and (ii) an organic phase comprising propyl bromide; (C) withdrawing the resultant phases from said column, at a rate comparable to the feeds being made into the column; and (D) separating the phases to form an upper acidic aqueous phase comprising aqueous hydrogen bromide superposed on a lower liquid organic phase comprising propyl bromide, and separating these upper and lower phases from each other.
    • 描述了从由丙烯与溴化氢的自由基催化氢溴酸形成的粗反应混合物中分离主要包含丙基溴的有机相的方法。 该方法包括(A)将冷水送入填充塔的上部或中部; (B)同时将粗反应混合物进料到塔的上部和/或中间部分,使得水接触粗反应混合物; 以形成(i)包含溴化氢水溶液的酸性水相和(ii)包含丙基溴的有机相的混合物; (C)以与进料塔进料相当的速率从所述塔中取出所得相; 和(D)分离相以形成上层酸性水相,其包含叠加在包含丙基溴的下部液体有机相上的溴化氢水溶液,并将这些上部和下部相分离。