Method of purifying fischer-tropsch derived water
    3.
    发明申请
    Method of purifying fischer-tropsch derived water 有权
    费 - 托衍生水的纯化方法

    公开(公告)号:US20050131084A1

    公开(公告)日:2005-06-16

    申请号:US11014517

    申请日:2004-12-16

    摘要: A process for the production of purified water from Fischer-Tropsch reaction water wherein the purified water is an aqueous stream having a COD of between 20 and 500 mg/l, a pH of between 6.0 and 9.0, a suspended solids content of less than 250 mg/l and a total dissolved solids content of less than 600 mg/l, and wherein the process includes at least the steps of a primary treatment stage comprising an equilibrium staged separation process having at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction water to produce a primary water enriched stream, a secondary treatment stage comprising liquid-liquid extraction for removing at least a fraction of organic acids from at least a portion of the primary water enriched stream to produce a secondary water enriched stream, a tertiary treatment stage comprising biological treatment for removing at least a fraction of acidic oxygenated hydrocarbons from at least a portion of the secondary water enriched stream to produce a tertiary water enriched stream and a quartic treatment stage comprising solid-liquid separation for removing at least some solids from at least a portion of the tertiary water enriched stream.

    摘要翻译: 用于从费 - 托反应水生产纯净水的方法,其中纯化水是COD为20-500mg / l,pH为6.0-9.0,悬浮固体含量小于250 mg / l,总溶解固体含量小于600mg / l,并​​且其中该方法至少包括主要处理阶段的步骤,所述初级处理阶段包括平衡分级分离方法,该方法具有至少一个阶段,用于除去至少一部分非 - - 来自费 - 托反应水的含氧烃,以产生初级富水流,二级处理阶段包括液 - 液萃取,用于从至少一部分初级富水流中除去至少一部分有机酸,以产生 第二富水流,第三处理阶段包括用于从至少一部分所述至少一部分去除至少一部分酸性氧化烃的生物处理 第二富水流以产生富含三水的料流和四次处理阶段,其包括固液分离,用于从至少一部分富含水的料流中除去至少一些固体。