东南大学学报（英文版）2006，Vol.22Issue(2)：256-259,4.
模拟烟气中炭质颗粒的汞吸附模型
Modeling mercury adsorption on carbon particles in simulated flue gas
摘要
Abstract
A model was developed to describe the adsorption characteristic of mercury in flue gas based on one residual carbon sample and one activated carbon sample. The differential equations were established with mass balance of mercury in the gas phase and in the solid phase. Then the model was solved using a Matlab program with a Runge-Kutta process. The mercury adsorption isotherms of these two adsorbents were obtained by breakthrough column experiments. The results show that at low gas phase mercury concentrations ( ＜0.3 mg/m3), the adsorption equilibrium of residual carbon is in accord with the case of a type Ⅱ isotherm of the Freundich theory. Whereas the data of activated carbon falls into the Langmuir relationship, it is the case of a type Ⅲ isotherm. The experimental data were fitted to the Freundlich model by Matlab software. The variances of mercury concentration are smaller than 0. 81 which implies the agreement between measurements and simulation is quite agreeable considering the wide scatter of the measurements. This model is useful for forecasting mercury removal efficiency and is helpful to the mechanism analysis of mercury adsorption on carbon-based adsorbent.关键词
汞/吸附/残炭/飞灰/活性炭Key words
mercury/adsorption/residual carbon/fly ash/activated carbon分类
资源环境引用本文复制引用
王立刚,陈昌和,Kruse H.Kolker..模拟烟气中炭质颗粒的汞吸附模型[J].东南大学学报（英文版）,2006,22(2):256-259,4.基金项目
The National Natural Science Foundation of China(No. 50306010), the National Basic Research Program of China (973Program) (No. G1999022200). （No. 50306010）
