堆密度对炼焦煤黏结性能影响的研究  

Influence of bulk density to coal caking property

作　　者：石晓明[1] 颜科求 王光辉[1] 舒大凡[1] 周旋[1] 王逸[1] 

机构地区：[1]武汉科技大学湖北省煤转化与新型炭材料重点实验室,武汉430081 [2]湖南煤化新能源有限公司,娄底417000

出　　处：《燃料与化工》2014年第4期20-23,26,共5页Fuel & Chemical Processes

摘　　要：对5种单种煤在不同堆密度下Y值、胶质层体积曲线及X值的变化规律进行了研究,结果表明:当堆密度从0.75t/m3增加到1.20t/m3时,气煤、1/3焦煤、肥煤和焦煤的Y值分别增加了2.5mm、5.0mm、6.3mm和5.8mm,而瘦煤无明显增加;1/3焦煤的胶质层体积曲线由"之"型向"山"型转变,使其胶质体性质向肥煤靠近,气煤、肥煤、焦煤和瘦煤的体积曲线无明显变化;增加煤料的堆密度可显著减小各单种煤的X值,且气煤、1/3焦煤、肥煤和焦煤结焦过程中均表现出明显的正膨胀性。The changes of Y value,volume curve of gelatinous layer and X value of five individual coals under different bulk density are studied. The result shows that when the bulk density is increased from 0. 75 t /m3 to 1. 2t /m3,Y value of gas coal,1/3 coking coal,fat coal and coking coal increases by 2. 5mm,5. 0mm,6. 3mm and 5. 8mm respectively,while there is no significant increase for lean coal; the volume curve of plastic layer for 1 /3 coking coal changes from zigzag mountain type,which indicates that with the increase of bulk density,the plastic layer property of 1 /3 coking coal is similar with that of fat coal,while the plastic layer property of gas coal,fat coal,coking coal and lean coal doesn＇t change too much;X value of all the five individual coals decreases obviously with the increase of bulk density,and gas coal,1 /3 coking coal fat coal and coking coal show obvious positive expansion during coking process.

关 键 词：堆密度 最终收缩度 胶质层最大厚度 胶质层体积曲线 黏结性能 

分 类 号：TQ520.5[化学工程—煤化学工程]