载硫活性炭对模拟天然气中单质汞的吸附研究
Study on Adsorption of Elemental Mercury from Simulated Natural Gas by Sulfur-Impregnated Activated Carbon

为明晰活性炭对天然气中气态单质汞的吸附效果，从气流流量、初始汞蒸汽浓度、吸附温度和吸附动力学等入手，研究了载硫活性炭对汞的吸附性能。结果表明气流流量对AC_S吸附汞的影响较小，且提高初始汞蒸汽浓度，可以促进AC_S对Hg的吸附和单位吸附容量。吸附温度升高可以促进AC_S对汞的吸附率，AC_S吸附汞的最佳温度介于60℃~80℃之间。采用准二级动力学过程对AC_S吸附汞过程进行了拟合，相关系数R²为0.995，表明AC_S吸附汞过程遵循Langmuir吸附等温方程。
In order to investigate the adsorption effect of activated carbon on gaseous elemental mercury in natural gas, the adsorption performance of sulfur-loaded activated carbon on mercury was studied based on the flow rate, initial concentration of mercury vapor, adsorption temperature and adsorption kinetics. The results showed that flow rate has little effect on Hg adsorption by AC_S, and increasing the initial concentration of mercury vapor can promote the adsorption and unit adsorption capacity of Hg by AC_S. The increase of adsorption temperature can promote the adsorption rate of mercury by AC_S, and the optimal temperature of mercury adsorption by AC_S is between 60？C~80？C. The quasi-second-order kinetic process was used to fit the mercury adsorption process of AC_S, and the correlation coefficient R² was 0.995, indicating that the mercury adsorption process of AC_S followed the Langmuir adsorption isothermal equation.