Shaofeng Lu , Zhengjian Liu , Yaozu Wang , Jianliang Zhang , Qiang Cheng
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引用次数: 0
Abstract
The application of hydrogen-enriched shaft furnace process is beneficial for the green and low-carbon transition of the iron and steel industry. This study investigates the use of a hydrogen-enriched gas coke oven gas as an alternative to natural gas in shaft furnace process. A two-dimensional numerical model based on the Euler-Euler model is developed to simulate the internal states of the shaft furnace including reduction and carburization reactions. This study examines the effects of different coke oven gas ratio on direct reduced iron quality gas utilization and carbon emissions. The results indicate that while increasing the coke oven gas ratio improves metallization degree it also leads to a reduction in carbon content. Increasing cooling gas flow rate will result in a decrease in metallization degree. Furthermore when the coke oven gas ratio exceeds 0.75 total carbon emissions are lower than those in a purely nature gas-based process. These findings offer insights into optimizing gas compositions in shaft furnaces for reducing carbon emissions and improving process efficiency.
期刊介绍:
The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.