公开(公告)号：US20050269266A1

公开(公告)日：2005-12-08

申请号：US11141490

申请日：2005-06-01

申请人： Zbigniew Twardowski ,  Thomas Drackett ,  Dmitri Bessarabov ,  Peter Fetissoff

发明人： Zbigniew Twardowski ,  Thomas Drackett ,  Dmitri Bessarabov ,  Peter Fetissoff

IPC分类号： B01D61/36 ,  B01D63/00 ,  C01B17/88 ,  C25B15/08

CPC分类号： B01D61/364 ,  C01B17/88 ,  C25B15/08

摘要： A method of enhancing the concentration of a first inorganic compound in a first aqueous solution of a first process of a heavy chemical plant, the method comprising (a) feeding the first solution having the first compound at a first concentration and a first water vapor pressure to an osmotic membrane distillation means comprising a hydrophobic, gas and water vapor permeable membrane separating (i) a first chamber for receiving the first solution, from (ii) a second chamber for receiving a receiver feed aqueous solution having a second water vapor pressure lower than the first water vapor pressure; (b) feeding the receiver aqueous feed solution to the second chamber as to effect transfer of water vapor through the membrane from the first chamber to the second chamber, and to produce (i) a resultant first solution having a second concentration of the first compound greater than the first concentration and (ii) a diluted receiver feed aqueous solution; and (c) collecting the resultant first solution. The apparatus and method are of particular value in electrolytic haloalkali production plants in offering reduced capital and operating re-concentration and dilution costs.

摘要翻译： 一种提高重化工厂第一工序的第一水溶液中第一无机化合物浓度的方法，该方法包括（a）将第一化合物的第一溶液以第一浓度和第一水蒸气压 涉及一种包含疏水性，气体和水蒸气可渗透膜的渗透膜蒸馏装置，其分离（i）用于接收第一溶液的第一室，（ii）用于接收第二水蒸气压较低的接收器进料水溶液的第二室 比第一次水蒸气压力高; （b）将所述接收器水性进料溶液供给到所述第二室，以使水蒸汽通过所述膜从所述第一室转移到所述第二室，并且产生（i）所得第一溶液具有所述第一化合物的第二浓度 大于第一浓度和（ii）稀释的受体进料水溶液; 和（c）收集所得的第一溶液。 该设备和方法在电解卤代碱生产工厂中具有特殊价值，从而降低资本和运营重新浓缩和稀释成本。