昆山粉尘爆炸的原因及解决措施  

Causes and solutions of Kunshan dust explosion

作　　者：王宝兴[1] 李晨[1] 

机构地区：[1]公安部天津消防研究所,天津300381

出　　处：《消防科学与技术》2015年第1期130-131,共2页Fire Science and Technology

摘　　要：根据以往粉尘爆炸泄压试验,认为2014年8月2日发生的江苏昆山的特大爆炸可能不是车间空气中粉尘浓度超标遇到火源造成的。粉尘爆炸发生在除尘管路,300个抛光装置的除尘管路相互连通到总除尘管道的除尘装置是主要原因。长期使用使滤网磨损,经过滤网流出气流中的粉尘浓度等于或大于爆炸下限,电机过热产生火源引爆除尘管道中的粉尘—空气混合物。According to a variety of dust explosion pressure tests, dust concentration out of limits in the workshop exposed to a source of ignition could not be the reason for the Kunshan dust explosion in Jiangsu on August 2nd, 2014. The explosion started in dust-extraction pipes. We suggested that the dust-ex- traction unit of main dust-extraction pipes, connected with other dust-extraction pipes of 300 buffing attachments, could be the primary cause. The dust concentration in the air through the strainer could be equal to or greater than the lower explosive limit for strainer abrasion caused by use over time, and then dust-air mixture was detonated by the fire source caused by motor overheating.

关 键 词：粉尘爆炸 爆炸下限 爆炸泄压 除尘装置 

分 类 号：X928.7[环境科学与工程—安全科学] X932