Method of removing a nitrogen oxide from a gas
    5.
    发明申请
    Method of removing a nitrogen oxide from a gas 失效
    从气体中除去氮氧化物的方法

    公开(公告)号:US20050061149A1

    公开(公告)日:2005-03-24

    申请号:US10508970

    申请日:2003-03-25

    摘要: The invention pertains to a method and an apparatus for removing a nitrogen oxide (NOx) from a gas by bringing the gas into contact with a scrub liquid in a scrubber for converting the nitrogen oxide into molecular nitrogen (N2), wherein the scrub liquid comprises a metal ion chelate and a biomass, after which at least a portion of the scrub liquid is subjected to a membrane separation process for separating at least part of the metal ion chelate, and the biomass and other solidified components, from dissolved components, wherein the membrane separation process comprises: a) filtering at least a portion of the scrub liquid using a first membrane capable of permeating the metal ion chelate to provide a first retentate liquid comprising the biomass and other solidified components, and a first permeate liquid comprising at least part of the metal ion chelate and dissolved components, and b) nanofiltering the first permeate liquid to give a second retentate liquid comprising the metal ion chelate and a second permeate liquid comprising dissolved components, and c) recycling at least part of the second retentate liquid to the scrubber.

    摘要翻译: 本发明涉及一种通过使气体与洗涤器中的洗涤液接触以将氮氧化物转化为分子氮(N 2)而从气体中除去氮氧化物(NOx)的方法和装置,其中洗涤液包含 金属离子螯合物和生物质,之后至少部分洗涤液经受膜分离过程,用于从溶解的组分分离至少部分金属离子螯合物和生物质等固化组分,其中, 膜分离方法包括:a)使用能够渗透金属离子螯合物的第一膜过滤至少一部分洗涤液,以提供包含生物质和其它固化组分的第一渗余液,以及包含至少部分 的金属离子螯合物和溶解的组分,以及b)对第一渗透液进行纳滤,得到包含金属离子的第二滞留液 螯合物和包含溶解组分的第二渗透液体,和c)将至少部分第二滞留物液体再循环至洗涤器。

    Method for Crystallizing Soluble Salts of Divalent Anions from Brine
    7.
    发明申请
    Method for Crystallizing Soluble Salts of Divalent Anions from Brine 有权
    从盐水中结晶二价阴离子的可溶性盐的方法

    公开(公告)号:US20080056981A1

    公开(公告)日:2008-03-06

    申请号:US11666000

    申请日:2005-10-18

    IPC分类号: C01D3/06

    摘要: The invention pertains to a method for at least partially removing soluble divalent anions from an aqueous divalent anion-containing brine solution comprising a crystal growth inhibitor (CGI) for the divalent anion, the method comprising the process steps: obtaining a sodium chloride concentration between 100 g/L and saturation in the presence or absence of a CGI for sodium chloride or a sodium chloride concentration above saturation in the presence of a CGI for sodium chloride, and acidifying the solution to a pH below 11.5; subjecting the solution to a membrane filtration step thereby separating the brine solution into a brine stream being supersaturated for the divalent anion (concentrate), and a brine stream being undersaturated for the divalent anion (permeate); subjecting the supersaturated brine stream comprising the crystal growth inhibitor for the divalent anion to a crystallization process, removing crystallized divalent anion; and optionally, recycling the overflow of the crystallizer to the brine solution for subjecting it again to the membrane filtration step.

    摘要翻译: 本发明涉及从含二价阴离子的含水二价阴离子盐水溶液中至少部分除去可溶性二价阴离子的方法,该方法包括二价阴离子的结晶生长抑制剂(CGI),该方法包括以下步骤:获得100 在存在或不存在用于氯化钠的CGI或在氯化钠的CGI存在下高于饱和的氯化钠浓度的情况下的饱和度,并将溶液酸化至低于11.5的pH; 使溶液进行膜过滤步骤,从而将盐水溶液分离成用于二价阴离子(浓缩物)过饱和的盐水流,并且对于二价阴离子(渗透物)不饱和的盐水流; 将包含结晶生长抑制剂的过饱和盐水流作为二价阴离子进行结晶处理,除去结晶二价阴离子; 并且可选地,将结晶器的溢流器再循环到盐水溶液中,以再次使其进行膜过滤步骤。

    Method for removing a nitrogen oxide from a gas
    10.
    发明授权
    Method for removing a nitrogen oxide from a gas 失效
    从气体中除去氮氧化物的方法

    公开(公告)号:US07405069B2

    公开(公告)日:2008-07-29

    申请号:US10508970

    申请日:2003-03-25

    IPC分类号: A61L9/01

    摘要: The invention pertains to a method and an apparatus for removing a nitrogen oxide (NOx) from a gas by bringing the gas into contact with a scrub liquid in a scrubber for converting the nitrogen oxide into molecular nitrogen (N2), wherein the scrub liquid comprises a metal ion chelate and a biomass, after which at least a portion of the scrub liquid is subjected to a membrane separation process for separating at least part of the metal ion chelate, and the biomass and other solidified components, from dissolved components, wherein the membrane separation process comprises: a) filtering at least a portion of the scrub liquid using a first membrane capable of permeating the metal ion chelate to provide a first retentate liquid comprising the biomass and other solidified components, and a first permeate liquid comprising at least part of the metal ion chelate and dissolved components, and b) nanofiltering the first permeate liquid to give a second retentate liquid comprising the metal ion chelate and a second permeate liquid comprising dissolved components, and c) recycling at least part of the second retentate liquid to the scrubber.

    摘要翻译: 本发明涉及一种通过使气体与洗涤器中的洗涤液接触以将氮氧化物转化为分子氮而从气体中除去氮氧化物(NO x)的方法和装置( N 2),其中所述洗涤液包含金属离子螯合物和生物质,然后将所述洗涤液的至少一部分进行膜分离过程以分离至少部分所述金属离子 螯合物和生物质和其它固化的组分,其中所述膜分离方法包括:a)使用能够渗透所述金属离子螯合物的第一膜过滤至少一部分所述洗涤液,以提供第一滞留物液体,其包含 生物质和其它固化组分,以及包含至少部分金属离子螯合物和溶解组分的第一渗透液,以及b)对第一渗透液进行纳滤,得到第二滞留液体com 赋予金属离子螯合物和包含溶解组分的第二渗透液,以及c)将至少部分第二滞留物液体再循环到洗涤器。