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发明公开
CN105567898A 基于重整气体的还原方法，其中返回还原废气并对用作重整器的燃烧气体的废气组分脱碳 无效 - 撤回

基于重整气体的还原方法，其中返回还原废气并对用作重整器的燃烧气体的废气组分脱碳
摘要：
本发明涉及基于重整气体的还原方法，其中返回还原废气并对用作重整器的燃烧气体的废气组分脱碳。本发明涉及一种通过与热的还原气体接触，来将金属氧化物(3)还原成金属化材料的方法，该还原气体至少部分通过催化重整下面的混合物产生：-含有二氧化碳(CO2)和/或水蒸气(H2O)的气体，和-气态烃，其中用于燃烧器(8a，8b，8c)的燃烧气体(其提供了用于在重整过程中发生的吸热性重整方法所需的热)是至少部分地由部分量的炉顶气来产生的，该炉顶气是在金属氧化物(3)还原成金属化材料的过程中产生的，其中这种部分量的炉顶气在它用作燃烧气体的组分之前，首先进行除尘，然后进行CO转化反应，并且在CO转化反应过程中所获得的转化气体在冷却之后进行了CO2除去。此外，本发明涉及一种进行这种方法的设备。
摘要（英）：

The present invention relates to a reformed gas-based reduction method with return of the waste reduction gases and decarbonisation of the waste gas component used as combustion gas for the reformer, and a method for reducing metal oxides (3) to metallised material through contact with hot reducing gas, which is produced at least partly by catalytic reforming of a mixture of a gas that contains carbon dioxide (CO2) and/or water vapour (H2O), with gaseous hydrocarbons. The combustion gas for the burners (8a, 8b, 8c) supplying heat for the endothermic reforming processes occurring during the reforming is obtained at least partly from a partial quantity of the top gas arising during the reduction of metal oxides (3) to metallised material. Before being used as a component of the combustion gas, the partial quantity of top gas is first subjected to a dust-removal process and then to a CO conversion reaction, and the conversion gas obtained during the CO conversion reaction is subjected, after cooling, to a CO2 removal process. The present invention further relates to a device for carrying out the method.

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