燃料化学学报2012，Vol.40Issue(9)：1025-1031,7.
Hypercoal对不同炼焦煤炭化改质作用的显微镜研究
Modification performance of Hypercoal as an additive on co-carbonization of coal
摘要
Abstract
Modification performance of Hypercoal (HPC) extracted from brown coal as an additive on the structure of carbonization products through co-carbonization with two different coals was examined. The dimension and texture changes of products were observed using polarization microscope and scanning electron microscope. The results show that the pore structure of carbonization products from caking coal is improved by adding additive with larger size,however smaller particles and more additive amount are favorable for weakly caking coal. As a good candidate of binding substance with high thermoplasticity,HPC particles were found to have a tendency to be well dispersed and further excellent adhesion between coal particles. Excessive expansion of product from caking coal can be inhibited in appropriate conditions. The number and diameter of pore are reduced and pore walls are thickened by adding HPC. Fluidity and fusibility of weakly caking coal are accelerated by the colloid in additive,which would lead to mechanical properties of products improved. Moreover,more factors affecting the product structure via single-carbonization and co-carbonization were taken into account,including moisture in coal and molding pressure of artifact. Special pore structure is formed in the products owing to moisture,and the influence of molding pressure on products is different with coal properties.关键词
Hypercoal/添加剂/共炭化/改质Key words
Hypercoal (HPC)/additive/co-carbonization/modification分类
化学化工引用本文复制引用
郝丽芳,封萍,宋文立,林伟刚,尹圣昊,持田勳..Hypercoal对不同炼焦煤炭化改质作用的显微镜研究[J].燃料化学学报,2012,40(9):1025-1031,7.基金项目
国家自然科学基金(51104137). （51104137）
