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    • 6. 发明申请
    • PROCESS AND PLANT FOR THE MANUFACTURE OF SULPHURIC ACID FROM GASES RICH IN SULPHUR DIOXIDE
    • 硫酸二氧化硫生产硫酸的工艺和设备
    • WO2004037719A1
    • 2004-05-06
    • PCT/EP2003/011659
    • 2003-10-21
    • OUTOKUMPU OYJDAUM, Karl-HeinzSEITZ, EkkehartMÜLLER, HermannANASTASIJEVIC, Nikola
    • DAUM, Karl-HeinzSEITZ, EkkehartMÜLLER, HermannANASTASIJEVIC, Nikola
    • C01B17/765
    • C01B17/7655
    • The present invention is concerned with a process and a plant for the production of sulphuric acid wherein a sulphur dioxide-containing feed gas is converted, at least in part, with oxygen in at least two contact stages of main contacts arranged in series, to generate sulphur trioxide, and wherein generated sulphur trioxide-containing gas is conducted to an absorber and converted therein to sulphuric acid. In order to be able to economically process feed gases of a sulphur dioxide content of between 13 and 66 % by volume to sulphuric acid, using conventional catalysts, it is suggested to withdraw from a contact stage connected upstream of the last main contact stage, a partial stream of the sulphur dioxide- and sulphur trioxide-containing gas, to mix the said partial stream with the feed gas to generate a contact gas of a sulphur dioxide content of more than 13 % by volume, and to return the same to the first contact stage.
    • 本发明涉及用于生产硫酸的方法和设备,其中含二氧化硫的进料气体至少部分地通过在串联布置的主触点的至少两个接触级中的氧气转化,以产生 三氧化硫,并且其中产生的含三氧化硫的气体被引导到吸收器并在其中转化成硫酸。 为了能够以常规催化剂经济地处理13至66体积%的二氧化硫含量的进料气体与硫酸的反应,建议从最后一个主要接触阶段上游连接的接触阶段退出, 含有二氧化硫和三氧化硫的气体的部分流,以将所述部分流与进料气体混合以产生二氧化硫含量大于13体积%的接触气体,并将其返回到第一 接触阶段