摘要
以神木煤与黏结煤为实验对象,探究神木煤与黏结煤配伍的配比对炼焦黏结特性的影响规律以及达到完全融合状态的配煤条件.在此基础上,研究了神木煤与气煤、肥煤和焦煤配煤时,其黏结性能与wO∶wH的关系.结果表明:随神木煤配比增加,配煤黏结性变差,配煤GRI值快速下降且其实验值远低于单种煤加和计算值;在一定的神木煤配入比例内,Y值与加和计算值基本吻合;配煤wO∶wH的影响与神木煤比例的影响一致;神木煤与气煤、肥煤和焦煤配伍时,当配煤达到完全融合状态时,神木煤的最大配比分别为30%(质量分数,下同),50%和40%,配煤Y值≥10,且神木煤与气煤、肥煤、焦煤配煤的焦渣特征指数分别大于4,5,4.
Shenmu coal was blended with caking coal and the compatibilities of Shenmu coal in blended coal samples were explored.For this purpose,the influence of blending ratio on the coking property and the coal blending parameters in the completely bonding state of char were obtained.Meanwhite,the relationship between the wO∶wHin blended coal and the coking property were discussed.The results show that an increase in blending ratio of Shenmu coal results in a rapid decrease in the GRIvalue of the blending coal,and the experimental GRIvalue is far less than weighted GRIvalue,while in the Shenmu coal blending range,experimental Yvalue can well fit the calculated value of single coal.The effect of wO∶wHin blended coal on the caking property is in agreement with that of Shenmu coal blending ratio.In addition,in order to obtain completely bonding state coke,the largest percentage of Shenmu coal blended with gas coal,fat coal and coking coal are 30%,50% and 40%,respectively.The Yvalue is equal to or bigger than 10 and the char residue characteristic index is bigger than 4,5,4 when Shenmu coal is blended with gas coal,fat coal and coking coal respectively.
出处
《煤炭转化》
CAS
CSCD
北大核心
2017年第5期45-49,共5页
Coal Conversion
基金
国家重点研发计划项目(2016YFB0600401-01)
关键词
神木煤
配煤
胶质层最大厚度
黏结指数
气化焦
Shenmu coal, blended coal, maximum thickness of colloidal matter layer, caking index, coke for gasification
