物化协同阻化剂的制备与性能实验研究

Experimental Research on Preparation and Performance of Physicochemical Synergistic Inhibitor

为了更好地抑制采空区遗煤自燃,针对单一性质阻化剂效率低的缺陷,将高吸水性树脂和抗氧剂作为主要原料,研制出具有物理兼化学阻化效果的新型物化协同阻化剂。采用程序升温-气相色谱联用实验分析各阻化煤样在氧化升温过程中CO、C_2H_4的生成变化规律。基于差示扫描量热实验,将各试样在升温过程中的活化能作为指标探究阻化剂对煤的阻化效果。结果表明:物化协同阻化剂既弥补了抗氧剂在煤氧化前期的弱阻化性,又克服了含水树脂在煤氧化后期阻化失效的缺陷,最大程度地抑制了煤的氧化产物和提高了煤氧化前后期的活化能,表现出的总体阻化效果比单独使用含水树脂或抗氧剂要好,是一种综合性能较好的新型复合协同阻化剂。

In order to prevent the residual coal from oxidizing and self-igniting, and overcome low inhibitory effect of single property inhibitor, we use super absorbent polymer and antioxidant as source materials to develop a physicochemical synergistic inhibitor which has both physical and chemical inhibitory effects. Furthermore, the temperature-programmed method and gas chromatograph are employed to analyze the generation of CO and C_2H_4 in the process of coal samples heating and oxidation.Meanwhile, based on the differential scanning calorimetry experiments, the activation energies of samples during temperature rising are regarded as indicators to investigate the effect of the inhibitors. The results show that physicochemical synergistic inhibitor can not only overcome low inhibitory effect of antioxidant at early stage of coal oxidation, but also eliminate the failure of inhibitory effect of super absorbent polymer at later stage of coal oxidation. And experiments prove that physicochemical synergistic inhibitor can largely reduce coal oxidation product, increase the activation energy in the process of coal oxidation and self-heating, its inhibitor efficiency is better than that of super absorbent polymer or antioxidant. Therefore, physicochemical synergistic inhibitor is a new-type inhibitor that has good comprehensive performance.