转炉煤气泄漏爆炸危险区域模拟

Simulation study on the risk area of converter gas leakage and explosion

为探究转炉煤气泄漏形成爆炸危险区域的范围,利用Fluent软件对某钢厂室外转炉煤气在不同的环境风速、泄漏压力及泄漏孔径条件下的泄漏情况进行了数值模拟.结果表明:与无风环境相比,小于1 m/s的环境风速会扩大爆炸危险区域范围,当风速大于2 m/s时爆炸危险区域稳定在7.2 m范围内;随着泄漏压力的增大,爆炸危险区域增大;泄漏孔径越大,爆炸危险区域越大,当孔径为100 mm时,爆炸危险区域距泄漏口的最远距离可达23.5 m.研究结果可为冶金企业划分转炉煤气泄漏导致的爆炸危险区域及制定防爆措施提供参考.

In order to explore the scope of the explosion hazard area formed by the converter gas leakage,the Fluent software was used to numerically simulate the leakage of the outdoor converter gas of a steel plant under the conditions of different environmental wind speed,leakage pressure and leakage aperture.The results show that:compared to a windless environment,an ambient wind speed of less than 1 m/s will expand the scope of the explosion hazard area.When the wind speed is greater than 2 m/s,the explosion hazard area will stabilize within the diameter of 7.2 m;the leakage pressure will increase and the explosion will occur.The hazardous area increases accordingly;the larger the leakage aperture,the larger the explosion hazard area.When the aperture is 100 mm,the maximum distance from the explosion hazard area to the leak can reach 23.5 m.The research results can provide reference for the division of explosion hazard areas caused by the leakage of converter gas in metallurgical enterprises and the formulation of explosion⁃proof measures.