堆密度对炼焦煤膨胀压力的影响.doc

University of Science and Technology Liaoning 本科生学位（毕业）论文 课题名称 堆密度对炼焦煤膨胀压力的影响 所在院系 化工学院 学科专业 化学工程与工艺（煤化工方向） 班 级 煤化09-2班 本科生姓名 高中稳 导师姓名 白金锋 （教授）、刘洋 堆密度对炼焦煤膨胀压力的影响 摘 要 本文通过自制的仪器设备，研究了不同炼焦煤在相同的实验条件下膨胀压力的变化情况以及不同堆密度的各单种煤及配合煤的膨胀压力的变化情况。实验结果表明，随着堆密度的增加，炼焦煤在结焦过程中的膨胀压力有了不同程度的增加。例如：新建煤在堆密度分别为0.7t/m3， 1.0t/m34.29Kpa，459.96Kpa 关键词：炼焦煤；堆密度；黏结性；最大膨胀压力 ABSTRACT China is the largest producer of coke and is rich in coal resources range, but has the phenomenon of uneven distribution of coal, coking coal reserves more than high-quality coking coal resources less. With the continuous development of various new coking technology, especially the wide application of large stamping technology, coking coal in the coking process often generates expansion pressure is too high, the service life of the smooth operation of the serious influence of coke oven and shorten the coke oven. In order to make rational use of Chinas coking coal resources, researching the properties of coking coal on the expansive pressure is essential, which is conducive to the maintenance of existing coke oven coking process and guide the development of new. In this paper, the different coking coal swelling pressure and change of every single coal of different bulk density and expansion of the pressure of coal under the same experimental conditions have been studied through the self-made equipment. The experimental results show that, with the increase of bulk density, expansion pressure of coking coal in the coking process with different degrees of increase. For example: coal in bulk density were 0.7t/m3, 1.0t/m3, in the coking process, the maximum expansion pressure are respectively 4.29Kpa, 459.96Kpa. Colloid generation in coking coal coking process is the basic cause of the expansion pressure, maximum swelling pressure and quality of coal caking property coal for coking coal is consistent, bonding and coking is better, the maximum expansion of greater pressure. With the maximum swelling pressure