FeCl_(3)改性活性炭脱硫性能研究

Study on Desulfurization Performance of FeCl_(3)Modified Activated Carbon

这是一篇环境工程领域的论文。实验采用浸渍法,以FeCl_(3)作为改性剂对活性炭进行改性,研究其脱硫能力。实验研究了改性剂浓度、焙烧温度、反应温度对改性活性炭脱硫性能的影响。研究表明,随着改性溶液浓度的增加,活性炭表面附着的Fe_(2)O_(3)随之增加,改性活性炭的比表面积和总孔容均降低,平均孔径增加;随着焙烧温度升高,活性炭表面附着的Fe2O3数量持续增加,焙烧温度超过300℃时,活性炭表面的孔隙结构出现烧结现象,降低改性活性炭的脱硫性能;随着反应温度升高,FeCl_(3)/AC-0.15的吸附性能先升高再降低。当FeCl_(3)改性溶液浓度为0.15mol/L,焙烧温度300℃,反应温度为60℃时,改性活性炭的脱硫效率最高。

This is an essay in the field of environmental engineering.The experiment adopts the impregnation method,and uses FeCl_(3)as the modifier to modify the activated carbon to study its desulfurization ability.The effects of modifier concentration,roasting temperature,and reaction temperature on the desulfurization performance of modified activated carbon were experimentally studied.Studies have shown that as the concentration of the modified solution increases,the Fe2O3 attached to the surface of the activated carbon increases,the specific surface area and total pore volume of the modified activated carbon decrease,and the average pore size increases;as the roasting temperature increases,the amount of Fe_(2)O_(3)attached to the surface of the activated carbon continues.When the roasting temperature exceeds 300℃,the pore structure of the activated carbon surface will be sintered,which will reduce the desulfurization performance of the modified activated carbon;as the reaction temperature increases,the adsorption performance of FeCl_(3)/AC-0.15 first increases and then decreases.When the concentration of FeCl_(3)modified solution is 0.15 mol/L,the calcination temperature is 300℃,and the reaction temperature is 60℃,the desulfurization efficiency of modified activated carbon is the highest.