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炼铁过程中氢的有效利用是钢厂降低排放量的重要措施之一。为讨论炼铁领域的CO_2减排,这里介绍如下由本文作者进行的四个基本工作:(1)水煤气变换反应对于H_2-CO混合气体还原氧化铁粉填充床的影响;(2)向高炉炉身下部喷入氢气的基本实验;(3)整个铁预熔融还原过程中干馏煤气对氧化铁的预还原;(4)焦中残留挥发物质,尤其是氢气,对含碳球团中氧化铁还原的影响。(5)通过质量和热量平衡模型,还评估和讨论了向高炉喷入氢气对其操作条件的影响,结果表明氢气喷吹使碳耗和供热都降低。
The efficient use of hydrogen in ironmaking is one of the important measures for steel mills to reduce their emissions. In order to discuss CO 2 emission reduction in the field of iron making, the following four basic work carried out by the author are as follows: (1) The effect of water-gas shift reaction on the packed bed of reduced iron oxide powder with H 2 -CO mixed gas; (2) (3) the pre-reduction of iron oxide by the pyrolysis gas during the pre-melting reduction of the whole iron; (4) the residual volatile matter in the coke, especially hydrogen, reducing the iron oxide in the carbon-containing pellets Impact. (5) Through the mass and heat balance model, the impact of injecting hydrogen into the blast furnace on its operating conditions was also evaluated and discussed. The results show that the hydrogen injection reduces the carbon loss and heat supply.