活性炭吸附脱硫固定床反应器研究

Research of fixed bed reactor for adsorptive desulfurization by activated carbon

在原油储运过程中挥发的H2S这种恶臭气体不但危害人体健康,还对环境造成很大的污染。文章提出了采用活性炭吸附脱除原油挥发气中H2S的工艺。从理论上探讨了活性炭脱硫机理及固定床内吸附传质动力学,并且建立了活性炭吸附H2S的固定床脱硫反应器数学模型,采用COMSOL Multiphysics软件求解数学模型以预测穿透曲线。同时进行了实验研究,并根据实验数据绘出了穿透曲线,且与模型计算结果进行了比较,二者吻合较好。还进一步探讨了空速、温度和原料气含量对吸附硫容的影响。

H2S is one of the major odorous gases,which is harmful to human health,and pollutes the environment.A process of adsorptive removing H2S by activated carbon was proposed.The mechanisms of desulfurization by activated carbon and kinetics of mass transfer in fixed bed adsorption were theoretically studied.To predict the breakthrough curves,a fixed bed desulfurization reactor mathematical model was established and simulated by using COMSOL Multiphysics software.Meanwhile,the breakthrough curves were studied and plotted according to the experimental data.The simulation result shows that the breakthrough curves under the different conditions are in well agreement with that of the experimental data.Moreover,the effect of the space velocity,temperature and the feed gas content on the adsorption capacity were investigated.