褐煤不同组堆存储方式的研究

摘要

通过对云南某种褐煤进行现场存储试验,分析了试验煤种在存储过程中的主要煤质指标变化,得出了试验煤种的煤质指标随时间变化的线性回归方程,对压实组堆和自由下落组堆两种组堆方式的经济性进行了评价.提出了选择最佳组堆方式的建议.同时,结合试验煤种的氧化特性及煤炭储存后对机组能耗的影响.在保证煤堆存储安全的前提下,建议试验煤种可采用压实组堆烧新存旧的方式进行存储.%Based on the field storage test on a kind of lignite from Yunnan Province,the indices changes of the coal quality are analyzed,and the linear regression equation representing the changes with time is obtained.Moreover,the optimum storage schemes are proposed based on the evaluation of the economics of the stacking mode of compressed and uncompressed piles.Also,based on the coal oxidation properties and the impact of storage style on the unit energy consumption,the compressed stacking piles are adopted and higher priority in use of the newly-arrived coal is put forward under the premise of ensuring safety.