煤矿硫化氢治理改性碱液实验研究

Experimental Study on Treatment of Modified Lye with Hydrogen Sulfide in Coal Mines

为了提高煤矿硫化氢治理碱液的吸收效率,以单一碳酸钠碱液为基础原料,通过添加表面活性剂十二烷基苯磺酸钠、氧化剂双氧水对吸收碱液进行改性处理,分别探讨了试剂添加量对硫化氢气体去除效率的影响。实验表明:碳酸钠碱液浓度与硫化氢去除率成正相关性,当碳酸钠溶液浓度增加到2%时,硫化氢初始去除率为100%,但经过振荡后,硫化氢二次散逸问题较为显著;随着十二烷基苯磺酸钠浓度的增加碱液对硫化氢的去除率逐渐提高,双氧水对碳酸钠溶液吸收硫化氢效果具有明显改善作用,最终通过实验分析结合实际情况,提出实验硫化氢治理改性碱液的最佳配比为:碳酸钠溶液浓度2%,表面活性剂浓度0.4%,氧化剂浓度0.6%。

To improve the absorption efficiency of lye treated with hydrogen sulfide in coal mines, a kind of single sodium carbonate lye was taken as the basic raw material to modify the absorption lye by adding the surfactant SDBS and the oxidant hydrogen peroxide, and the effects of reagent addition on the hydrogen sulfide removal efficiency were discussed. Experiments show that the concentration of sodium carbonate is directly related to the removal rate of hydrogen sulfide. When the concentration of sodium carbonate solution is increased to 2%, the initial removal rate of hydrogen sulfide is 100%;but after the oscillation, the problem of secondary hydrogen sulfide emission is more significant;with the increase of SDBS concentration, the removal rate of hydrogen sulfide from lye gradually increases, and the effect of hydrogen peroxide on the absorption of hydrogen sulfide from sodium carbonate solution is obviously improved. Finally, this experiment is proposed based on the actual situation. The optimum ratio of modified lye by hydrogen sulfide treatment is: sodium carbonate solution concentration of 2%, surfactant concentration of 0.4%, oxidant concentration of 0.6%.