天然气蒸汽转化或二氧化碳变换是生产费一托合成气、合成氨用气的一个重要工业方法。而且在工业上也为直接还原工厂提供还原气。通常在转化管中用镍作催化剂。直接还原法中,在800—1000℃之间用CO和H_2将铁矿石还原成海绵铁。为了提高直 Natural gas steam reforming or carbon dioxide conversion is an important industrial method for producing syngas and ammonia for production costs. But also industrially provides reduction gas for direct reduction plants. Nickel is usually used as a catalyst in the reforming tube. In the direct reduction method, iron ore is reduced to sponge iron with CO and H 2 at 800-1000 ° C. In order to raise straight