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    • 8. 发明申请
    • OSMOTIC DESALINATION PROCESS
    • OSMOTIC脱盐工艺
    • WO02060825A3
    • 2002-12-19
    • PCT/US0202740
    • 2002-02-01
    • UNIV YALEMCGINNIS ROBERT
    • MCGINNIS ROBERT
    • B01D11/00B01D61/00C02F1/00C02F1/02C02F1/44
    • B01D61/002B01D61/005C02F1/02C02F1/44C02F1/445C02F2103/08Y02A20/131Y02W10/33Y02W10/37
    • An energy efficient desalination process that does not produce waste products involves the extraction of water from a first solution (10, 12), such as seawater, by using a second concentrated solution (18) to draw the water from the first solution (12) across a semi-permeable membrane (16). By manipulating the equilibrium of the soluble and insoluble species of solute within the second solution (18) in favor of the soluble species of the solute, a saturated second solution can be used to generate osmotic pressure on the first solution (12). Also, by adjusting the equilibrium in favor of the less soluble species after the water has been drawn from the first solution (12), a portion of the solute can easily be precipitated out. Heating the second solution (18) decomposes the solute into its constituent gasses. The constituent gasses and precipitated solute may be recycled through the process to affect the changes in equilibrium and eliminate waste products. Additionally, by using the waste steam from industrial sources and a heat pump to effectively distribute heat through the present method, the present method exhibits greater energy efficiency than prior art methods.
    • 不产生废物的能量高效脱盐方法涉及通过使用第二浓缩溶液(18)从第一溶液(10,12)中抽出来自第一溶液(12)的水从第一溶液(10,12)(例如海水)中提取水, 穿过半透膜(16)。 通过操纵第二溶液(18)中可溶性和不溶性溶质的平衡,有利于溶质的可溶性物质,饱和的第二溶液可用于在第一溶液(12)上产生渗透压。 此外,通过在从第一溶液(12)中抽出水后,通过调节有利于较少可溶物质的平衡,一部分溶质可以容易地沉淀出来。 加热第二溶液(18)将溶质分解成其组分气体。 组分气体和沉淀溶质可以通过该过程循环,以影响平衡的变化并消除废物。 此外,通过使用来自工业源的废蒸汽和热泵通过本方法有效地分配热量,本方法比现有技术方法显示出更大的能量效率。