木纤维粉尘的爆炸危险性分级

以某木材加工厂除尘器内的木纤维粉尘作为研究对象，对其进行爆炸特性参数测试和爆炸危险性分级研究。结果表明:结合测得的爆炸特性参数，根据美国爆炸指数E 综合分级法，危险等级为强；根据德国危险性分级方法，木纤维粉尘的爆炸等级属于St1，其爆炸特性较弱；根据国际电工委员会（IEC）分级方法，木纤维粉尘属于不需要特别注意类粉尘；结合E 综合分级法，我国将木粉划分为危险性级别高的可燃性粉尘，此分级较为合理。但对于防爆措施的实施，需要根据实际生产过程中产生的粉尘爆炸参数进行设计改造。

Explosion risk classification of wood fiber dust

In this paper, the explosion characteristics and explosion risk classification of wood fiber dust from the dust collector of a wood processing factory were investigated. Combined with explosion characteristic parameters, the risk level of wood fiber dust is strong according to the American Explosion Index E Comprehensive Classification Method; the explosion grade is St1 (weak explosion) based on the German Hazard Classification Method. While according to the International Electrotechnical Commission (IEC) Classification Method, the wood fiber dust does not require special attention. In China, the wood dust is classified as a high risk level flammable dust. However, we need to design and modify the explosion-proof devices according to the dust explosion parameters from the actual production process.