封闭式大储量圆形煤场储煤自燃分析及处理

摘要

Due to many spontaneous combustions of coal in enclosed circular coal yard with large coal reserves, it is imminent to know how to prevent and control coal spontaneous combustion.As analysised,the main rea-sons of coal spontaneous combustion are Coal stocks,high coal volatile,increase of coal oxidation layer and water catalytic.So,the keys to prevent and control coal spontaneous combustion are reduce of the contact area of the air and coal,control of moisture content in coal,good ventilation cooling measures and so on.There-fore,,putting forward the establishment of a sound quality management files,“first in first out,burn the old new,regular replacement”,control of the oxygen supply for spontaneous combustion of coal,timely treatment once finding the signs,strict control of time of spontaneous combustion of coal entry storage and measures on how to treat the spontaneous combustion of coal strategy measures can greatly improve the safety factor of the coal yard and the economic benefits of the power plant.%针对燃煤电厂发生多起封闭式大储量圆形煤场储煤自燃问题，如何防止和治理煤炭自燃迫在眉睫。分析认为，煤炭自燃的主要原因是煤场库存量大、煤炭挥发分高、堆煤氧化层增大和水分催化，而减少空气与煤的接触面，控制煤中的水分含量，做好通风散热等措施，是预防和治理圆形煤场储煤自燃的关键。为此，提出建立健全煤质管理档案、“先进先出，烧旧存新，定期置换”、控制煤炭自燃的供氧量、发现自燃征兆及时处理、严控自燃煤的入场堆存时间和处理煤炭自燃的策略等措施，提高煤场的安全运行和电厂的经济效益。