共查询到20条相似文献,搜索用时 93 毫秒
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选择低灰、低硫的长焰煤进行预处理,按照焦化厂的日常配比代替其中的气煤或瘦煤进行配煤炼焦实验;小焦炉实验表明,配入6%的动力煤可以提高焦炭的强度和块径;对于强黏结性的焦煤,预处理动力煤的配比可达到20%。 相似文献
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探讨了高硫煤在配煤炼焦中的有效利用。试验结果表明,高硫煤在配煤中占25% ̄40%可以炼制合格的冶金焦。 相似文献
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邯郸钢铁公司新区焦化项目于2008年2月投产。目前共有JNX70-2型42孔焦炉4座,年设计焦炭产量200万t。由于该型号焦炉为国内首座7m焦炉,在炼焦配煤方案上无借鉴的经验。焦化厂在做了大量配煤试验后,逐渐优化配煤方案,最终达到了公司要求的焦炭质量目标。 相似文献
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Xiangchun Liu Ping Cui Qiang Ling Zhigang Zhao Ruilun Xie 《Frontiers of Chemical Science and Engineering》2020,14(4):504
It has become the top priority for coking industry to rationally use and enlarge coking coal resources because of the shortage of the resources. This review focuses on the potential utilization of oil shale (OS) as a feedstock for coal-blending coking, in which the initial and basic step is pyrolysis. However, OS has a high ash content. If such OS is directly used for coal-blending coking, the coke product will not meet market demand. Therefore, this review firstly summarizes separation and beneficiation techniques for organic matter in OS, and provides an overview on coal and OS pyrolysis through several viewpoints (e.g., pyrolysis process, phenomena, and products). Then the exploratory studies on co-pyrolysis of coal with OS, including co-pyrolysis phenomena and process mechanism, are discussed. Finally, co-pyrolysis of different ranks of coals with OS in terms of coal-blending coking, where further research deserves to be performed, is suggested. 相似文献
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介绍了在生产性实验中配加不同比例的贫瘦煤炼焦对焦炭强度的影响 ,最经济合理的配煤比可使焦炭的强度有一定改善。 相似文献
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通过模拟工业焦化过程,针对一种高硫煤考察了不同气体种类、流量及加热速率下,焦炉煤气返回焦化过程对物焦炭中硫含量变化的影响。结果表明,焦化过程中通入H2,CH4和N2气体可以抑制热解气中的硫返回固体焦炭中,H2达到的焦炭脱硫量最大,其次是CH4和N2;增大气体流量、减小加热速率有利于使硫向气相转移,从而使固体焦炭中的硫分配降低;固体焦炭中硫含量变化亦表明,H2效果较佳,在3.0,1.5℃/min2种加热速率下可使焦炭中硫含量分别降低0.36%~0.39%和0.46%~0.56%。 相似文献