Gemini表面活性剂对褐煤润湿改性研究

Research of Wettability Modification of Lignite Using Gemini Quaternary Ammonium Surfactant

为研究Gemini季铵盐表面活性剂在褐煤表面吸附对煤表面润湿性的影响,考察了Gemini表面活性剂在褐煤表面的吸附特性及吸附表面活性剂对褐煤表面润湿性的改性效果,结果表明,在一定范围内,增大Gemini季铵盐表面活性剂溶液初始浓度,表面活性剂在褐煤表面的吸附量会增大,溶液p H值在6~7和提高溶液温度,有利于表面活性剂与煤吸附过程的进行。

In order to investigate the influence of gemini quaternary ammonium surfactant adsorption on the surface wettability of lignite, the adsorption characteristic of gemini surfactant on lignite surface and its effects on the surface wettabitity modification were studied. The obtained results show that enhancement of surfactant solution initial concentration within a certain range can increase the adsorption quantity of surfactant on lignite surfaces. It was observed that the optimum pH value for the adsorption process of gemini surfactant on lignite surfaces was range from pH 6 to pH 7. The quantity of surfactant adsorbed on lignite surfaces increased with raising the temperature.