LOW TEMPERATURE OXIDATION OF AMMONIA IN NITRIC ACID PRODUCTION
    9.
    发明申请
    LOW TEMPERATURE OXIDATION OF AMMONIA IN NITRIC ACID PRODUCTION 审中-公开
    硝酸在硝酸生产中的低温氧化

    公开(公告)号:US20120183467A1

    公开(公告)日:2012-07-19

    申请号:US13006460

    申请日:2011-01-14

    IPC分类号: C01B21/38

    摘要: Ammonia in a gas stream comprising oxygen and nitrogen may be effectively completely oxidized to a mixture of NO and NO2 for further processing to nitric acid. The gas stream is flowed over fine particles of La1-xSrxCoO3 and/or La1-xSrxMnO3, and/or La1-xSrxFeO3 where x=about 0.1, 0.2, or 0.3. The particles are supported as catalyst layers on gas stream-contacting surfaces of a flow-through catalyzed oxidation reactor. These relatively inexpensive perovskite-type materials may be used to promote oxidation of ammonia at temperatures below about 450° C. to about 500° C. to selectively produce a mixture of NO and NO2. This mixture is suitable for further oxidation to NO2 for adsorption into water to make nitric acid.

    摘要翻译: 包含氧和氮的气流中的氨可以有效地完全氧化成NO和NO 2的混合物,以进一步加工成硝酸。 气流在La1-xSrxCoO3和/或La1-xSrxMnO3和/或La1-xSrxFeO3的细颗粒上流动,其中x =约0.1,0.2或0.3。 颗粒在流通催化的氧化反应器的气流接触表面上作为催化剂层被支撑。 这些相对便宜的钙钛矿型材料可用于在低于约450℃至约500℃的温度下促进氨的氧化,以选择性地产生NO和NO 2的混合物。 该混合物适于进一步氧化成NO2以吸附到水中以制备硝酸。