煤沥青对不同变质程度煤成焦性能的影响  

EFFECT OF COAL TAR PITCH ON THE COKING PERFORMANCES FROM DIFFERENT RANK OF COALS

作　　者：白永建[1] 许德平[1] 王永刚[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京博士生100083

出　　处：《煤炭转化》2013年第2期59-62,78,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(21076222)

摘　　要：为了考察煤沥青与不同变质程度煤的共炭化特性,利用40kg小焦炉模拟炼焦试验,进行了单种煤5%与10%的煤沥青添加的各煤种的炭化研究.研究结果表明,沥青对不同变质程度煤生成焦炭的显微结构影响不同.对低变质程度的中低黏结性煤,增加了焦炭光学组织指数OTI;对黏结组分充足的中等变质程度煤的OTI影响较小;对高变质程度煤OTI影响显著.沥青对不同变质程度煤生成焦炭的机械性能影响不同.对低变质程度的中低黏结性煤,溶解作用较明显,对机械强度有较大改善;对黏结组分充足的中等变质程度煤的成焦性能影响较小;对高变质程度煤成焦性能影响最为明显,可显著改善焦炭机械性能和热性质.To study the co-carbonization between coal tar pitch and different rank of coal, experiments of charring between 5% and 10% of coal tar pitch and coals were studied, which were test in coke oven of 40 kg. The results showed that, the microstructures of cokes charred from different rank of coals and coal tar pitch were different. The pitch increased the Optical Texture Index （OTI） of the coke from low rank of coals and high rank of coals, and had little effect on that from middle rank of coals. The mechanical behaviors of cokes charred from diffe- rent rank of coals and coal tar pitch were also different. The cokes from low rank of coals had high mechanical strength because of obviously dissolution; the cokes from middle rank of coals had little effect with pitch; however, the pitch obviously improves the mechanical capacities and thermal properties of the coke charred from high rank of coals.

关 键 词：煤沥青 变质程度 热性质 结焦性能 

分 类 号：TQ520.6[化学工程—煤化学工程]