【作者】 张小蕊； 邹冲； 赵俊学； 马成； 李宝； 吴浩；

【Author】 Zhang Xiaorui;Zou Chong;Zhao Junxue;Ma Cheng;Li Bao;Wu Hao;School of Metallurgical Engineering, Xi’an University of Architecture and Technology;

【机构】 西安建筑科技大学冶金工程学院；

【摘要】 结合高炉炼铁中气基还原的优势及低阶煤低温富氧干馏技术的优势,通过调节干馏条件来控制煤气成分以便得到富氢煤气供高炉还原铁矿石而用。本研究进行了不同含量的H₂、CH₄和CO气氛下煤低温干馏实验,考察了煤气成分、焦油收率和组成的变化。结果表明:H₂配比的提高,有助于煤气中CH₄、CO及C_nH_m的提升;CH₄配比的增加,有效地提高了煤气中H₂、CH₄及C_nH_m的含量;CO气氛有助于煤干馏煤气中H₂、CH₄及C_nH_m的生成。同时,H₂、CH₄和CO气氛可提高煤气产率与焦油收率,且可使焦油中轻质焦油的份额增加。更多还原

【Abstract】 Based on the advantages of gas-based reduction in blast furnace ironmaking and the advantages of low-rank coal low-temperature oxygen-enriched dry distillation technology, the gas component is controlled by adjusting the dry distillation conditions to obtain a hydrogen-rich gas for use in blast furnace reduction iron ore. In this study, low temperature dry distillation experiments of coal under different H₂, CH₄ and CO atmospheres were carried out, and the changes of gas composition, tar yield and composition were investigated. The results show that the increase of H₂ ratio contributes to the increase of CH₄, CO and C_nH_m in gas; the increase of CH₄ ratio effectively increases the content of H₂, CH₄ and CnHm in gas; CO atmosphere contributes to coal dry distillation gas Generation of H₂, CH₄ and C_nH_m. At the same time, the H₂, CH₄ and CO atmospheres increase the gas yield and tar yield and increase the fraction of light tar in the tar.更多还原