METHODS AND SYSTEMS FOR UTILIZING CARBIDE LIME OR SLAG
    9.
    发明申请
    METHODS AND SYSTEMS FOR UTILIZING CARBIDE LIME OR SLAG 有权
    利用碳化硅或硅酸盐的方法和系统

    公开(公告)号:US20150307400A1

    公开(公告)日:2015-10-29

    申请号:US14694348

    申请日:2015-04-23

    IPC分类号: C04B28/02 C01C1/16 C01F11/18

    摘要: Provided herein are methods comprising a) treating a slag solid or carbide lime suspension with an ammonium salt in water to produce an aqueous solution comprising calcium salt, ammonium salt, and solids; b) contacting the aqueous solution with carbon dioxide from an industrial process under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant aqueous solution wherein the precipitation material and the supernatant aqueous solution comprise residual ammonium salt; and c) removing and optionally recovering ammonia and/or ammonium salt using one or more steps of (i) recovering a gas exhaust stream comprising ammonia during the treating and/or the contacting step; (ii) recovering the residual ammonium salt from the supernatant aqueous solution; and (iii) removing and optionally recovering the residual ammonium salt from the precipitation material.

    摘要翻译: 本文提供的方法包括:a)用铵盐在水中处理渣固体或碳化石灰悬浮液以产生包含钙盐,铵盐和固体的水溶液; b)在一个或多个沉淀条件下,从工业过程中将水溶液与二氧化碳接触以产生包含碳酸钙和上清液水溶液的沉淀物质,其中沉淀物质和上清液水溶液包含残留的铵盐; 和c)使用一个或多个步骤去除和任选地回收氨和/或铵盐(i)在处理和/或接触步骤期间回收包含氨的气体排出流; (ii)从上清液水溶液中回收残留的铵盐; 和(iii)从析出物中除去和任选地回收残留的铵盐。