爆破器材Issue(6)：16-21,6.DOI:10.3969/j.issn.1001-8352.2014.06.004
石松子粉尘爆炸危险性及抑爆研究❋
Hazards and Suppressions Research on Lycoposium Dust Explosion
摘要
Abstract
To investigate the influence of particle size on lycopodium dust explosion hazards, the dust explosions were experimentally studied using a Godbert-Greenwald ( G-G) furnace and a 20 L sphere explosion test unit, and the variation regularities of the explosion characteristic with the diameter of lycopodium were analyzed. Moreover,the effects of SiO2 and NH4 H2 PO4 on dust explosion suppression were also studied. The results indicate that the smaller the dust particle size, the lower the ignition temperature, and consequently the bigger thepotential hazards. Dust particle size in less than 48 μm at a mass concentration of 750 g/m3 results in a maximum explosion index of 22. 61 MPa��m/s, which ranks a gradeⅡexplo-sion in the risk classification exhibiting a higher grade of hazard in comparison the dust size less than 75 μm. Adding SiO2 and NH4 H2 PO4 can efficiently reduce lycopodium dust explosion pressure and explosion index, and the explosion sup-pression effects of NH4 H2 PO4 are better than that of SiO2 .关键词
石松子粉/粉尘爆炸/着火温度/爆炸压力/爆炸指数/抑爆Key words
lycopodium/dust explosion/ignition temperature/explosion pressure/explosion index/explosion sup-pression分类
资源环境引用本文复制引用
彭于怀,黄丽媛,曹卫国,郑俊杰,卑凤利,潘峰..石松子粉尘爆炸危险性及抑爆研究❋[J].爆破器材,2014,(6):16-21,6.基金项目
国家自然科学基金项目(51174047) （51174047）
