喷洒吸收液治理煤矿H_2S影响因素试验研究

Experimental Research on Influence Factors of Spraying Absorption Liquid to Control H_2S in Coal Mine

理论分析了喷洒吸收液治理煤矿H2S的机理;采用正交试验方法,得出喷洒吸收液治理H2S的影响因素大小顺序为:风速>吸收液浓度>H2S浓度>喷洒吸收液流量;实验室模拟试验表明,在一定条件下,H2S吸收效率呈现随模拟风速及涌出H2S浓度的增加而降低、随喷洒吸收液浓度和流量加大而提高的规律。现场应用表明,掘进机割煤喷洒吸收液后,司机处涌出H2S浓度的降低效率达到84.9%;同时测得司机处粉尘浓度的降低效率高达93.4%,取得较好治理煤矿H2S及粉尘职业危害效果。

The mechanism about spraying absorption liquid controlling the sulfured hydrogen in coal mine is carried out by theoretical analysis; using the method of orthogonal test, the order of influencing factors of spraying absorption liquid on hydrogen sulfide absorption is that： wind speed 〉 absorbing solution concentration〉 concentration of hydrogen sulfide〉spray absorption liquid flow. Simulation experiment results show that, under a certain conditions, the hydrogen sulfide absorption efficiency increases with the simulation of wind speed and emission of hydrogen sulfide concentration decreased, with the increase of spraying absorbing solution concentration and flow rate. Field applications show that the coal cutting excavation, spraying the absorption liquid, the driver at the emission concentration of hydrogen sulfide reducing efficiency is up to 84.9%; at the same time, measured driver dust concentration reduces efficiency as high as 93.4%, and it obtained better effect of hydrogen sulfide and dust hazard management of coal mine.