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    • 9. 发明授权
    • Method of liquid-liquid extraction of gallium from a basic aqueous
solution
    • 从碱性水溶液中液 - 液萃取镓的方法
    • US4587111A
    • 1986-05-06
    • US669065
    • 1984-11-07
    • Nicholas P. Wynn
    • Nicholas P. Wynn
    • C01G15/00C22B3/36
    • C01G15/003C22B3/0037C22B3/0039Y02P10/234
    • The process of liquid-liquid extraction of gallium from sodium aluminate liquor used in the Bayer alumina process, uses an organic extractant comprising a diluent and a substituted hydroxyquinoline such that gallium and some aluminum are extracted into the organic phase.In five successive steps, the organic extractant solution loaded with gallium and aluminum is first contacted with an aqueous mineral acid solution, during which the acid solution strips the loaded solution of gallium and aluminum. Next, the phases are separated and a chloride salt or hydrochloric acid is dissolved in the acidic solution of gallium and aluminum which is then contacted with an organic solvent, e.g. n-butyl acetate. Aluminum remains in the aqueous acid solution whereas the organic solvent becomes loaded with gallium.After the phases have been separated, the organic solvent is separated from gallium chloride, which forms the feed for producing pure gallium.
    • 在拜尔氧化铝工艺中使用的铝酸钠液体液体液体萃取镓的方法使用包含稀释剂和取代的羟基喹啉的有机萃取剂,使得镓和一些铝被萃取到有机相中。 在连续五个步骤中,首先将装载有镓和铝的有机萃取剂溶液与无机酸水溶液接触,在此期间酸溶液将负载的镓和铝溶液剥离。 接下来,将相分离,并将氯化物盐或盐酸溶解在镓和铝的酸性溶液中,然后与有机溶剂例如乙酸乙酯接触。 乙酸正丁酯 铝保留在酸性水溶液中,而有机溶剂装载有镓。 相分离后,有机溶剂与氯化镓分离,形成纯镓的原料。
    • 10. 发明授权
    • Processes for the production of methanol using sweep-based membrane separation steps
    • 使用基于扫描的膜分离步骤生产甲醇的方法
    • US08829059B2
    • 2014-09-09
    • US13826682
    • 2013-03-14
    • Nicholas P. Wynn
    • Nicholas P. Wynn
    • C07C27/10
    • C07C29/151C07C29/76C07C31/04
    • Disclosed herein are methanol production processes that include a sweep-based membrane separation step using a membrane that is selective to carbon dioxide over hydrogen. Using the processes of the invention, the efficiency of methanol production from syngas is increased by reducing the compression requirements of the process and/or improving the methanol product yield. In certain embodiments, a hydrogen-rich stream is generated; this hydrogen-rich stream can be sent for other uses. An additional benefit is that the processes of the invention may debottleneck existing methanol plants if more syngas or carbon dioxide is available, allowing for feed of imported carbon dioxide into the synthesis loop. This is a way of sequestering carbon dioxide.
    • 本文公开了甲醇生产方法,其包括使用对二氧化碳对氢气有选择性的膜的基于扫描的膜分离步骤。 使用本发明的方法,通过降低该方法的压缩需求和/或提高甲醇产物产率来提高合成气生产甲醇的效率。 在某些实施方案中,产生富氢流; 这种富氢流可以发送用于其他用途。 另外的好处是,如果更多的合成气或二氧化碳可用,本发明的方法可以对现有甲醇装置进行脱瓶,从而允许将进口的二氧化碳进料到合成循环中。 这是一种隔离二氧化碳的方式。