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    • 2. 发明申请
    • METHOD AND APPARATUS FOR REMOVING CARBON DIOXIDE FROM FLUE GAS
    • 从烟气中去除二氧化碳的方法和设备
    • WO2017124151A1
    • 2017-07-27
    • PCT/AU2017/050043
    • 2017-01-20
    • REID, Terrence
    • REID, Terrence
    • B01D53/62B01D53/78B01F3/04
    • B01D53/62B01D53/78B01D2251/2062B01D2251/304B01D2251/404B01D2251/608B01D2258/01B01D2258/0233B01D2258/025B01D2258/0283B01D2258/0291B01F3/04609B01F2003/04631B01F2003/04666B01F2003/0468Y02C10/04
    • A method of removing carbon dioxide from flue gas is disclosed. The method comprises mixing the flue gas with ammonia; and contacting the gas mixture with calcium nitrate solution to produce calcium carbonate precipitates and ammonium nitrate solution; or contacting the gas mixture with sodium nitrate solution to produce sodium carbonate precipitates and ammonium nitrate solution. The carbonate/bicarbonate precipitates are recovered by separating the carbonate/bicarbonates (s) from said solutions. An apparatus for performing the above method is also disclosed. The apparatus comprises a reaction vessel with an inlet to receive said solution and an inlet to receive and deliver a flue gas-ammonia mixture to a gas-liquid contactor which is configured to diffuse said gas mixture into either calcium nitrate or sodium nitrate solution. The reaction vessel is also provided with an impellor and draft tube configured to circulate the diffused gas mixture throughout the calcium nitrate or sodium nitrate solution for a period of time sufficient to produce carbonate/bicarbonate precipitates locking the CO2 into a solid form.
    • 公开了一种从烟气中去除二氧化碳的方法。 该方法包括将烟气与氨混合; 并使该混合气体与硝酸钙溶液接触以产生碳酸钙沉淀物和硝酸铵溶液; 或使气体混合物与硝酸钠溶液接触以产生碳酸钠沉淀物和硝酸铵溶液。 通过从所述溶液中分离碳酸盐/碳酸氢盐来回收碳酸盐/碳酸氢盐沉淀物。 还公开了用于执行上述方法的设备。 该设备包括反应容器,该反应容器具有接收所述溶液的入口和接收烟气 - 氨混合物并将其输送到气液接触器的入口,所述气液接触器被配置成将所述气体混合物扩散到硝酸钙或硝酸钠溶液中。 反应容器还设置有叶轮和引流管,叶轮和引流管构造成使扩散的气体混合物在整个硝酸钙或硝酸钠溶液中循环足够的时间以产生将CO 2锁定为固体形式的碳酸盐/碳酸氢盐沉淀物。