生物滴滤塔烟气同时脱硫脱硝中试动力学模拟  

Dynamic simulation on biological filter tower for flue gas desulfurization and denitrification in pilot scale

作　　者：徐海涛[1] 周长城[1] 宋静[1] 赵英杰[1] 金保昇[1] 

机构地区：[1]东南大学能源与环境学院能源热转换及其过程测控教育部重点实验室,江苏南京210096

出　　处：《环境污染与防治》2017年第6期673-677,共5页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51306034);国家重点基础研究发展计划项目(No.2013CB228505);江苏省重点研发计划项目(No.BE2015677)

摘　　要：动力学模型可计算并预测各种操作参数条件下生物滴滤塔烟气同时脱硫脱硝工艺的运行效果。在实验室研究中建立了生物滴滤塔对SO_2及NO_x的降解去除动力学方程,并应用于中试试验研究。结果表明,在实验室研究中,生物滴滤塔对SO_2降解去除的动力学方程为c_(g,out)+32.052 8lnc_(g,out)=c_(g,in)+32.052 8lnc_(g,in)-90.158 7(c_(g,in)、c_(g,out)分别为进入生物滴滤塔底部、生物滴滤塔排出尾气中的气态SO_2或NO_x质量浓度,g/m^3,下同),对NO_x降解去除的动力学方程为c_(g,out)+8.223 7lnc_(g,out)=c_(g,in)+8.223 7lnc_(g,in)-8.284 1。中试试验研究中经过修正,生物滴滤塔对SO_2降解去除的动力学方程为c_(g,out)+3 105.685 5lnc_(g,out)=c_(g,in)+3 105.685 5lnc_(g,in)-11 126.837 3,对NO_x降解去除的动力学方程为c_(g,out)-916.675 2lnc_(g,out)=c_(g,in)-916.675 2lnc_(g,in)-244.226 2。Dynamic model could be used to calculate and predict the operation effect of biological filter tower for flue gas desulfurization and denitrification under various operating parameters. The dynamic equations were estab-lished for SO2 and NOx removal in laboratory scale. Then the equations were revised in pilot scale. Results showed that the equation for SO2 removal in laboratory scale was Cg,out ＋ 32.052 8lnc g,out = cg,in ＋ 32.052 8lncg,in - 90.158 7 （cg,in and Cg,out were gaseous SO2 or NOx mass concentration in inlet and outlet, g/m3, same as follows） and the one for NOx removal was cg,out ＋8.223 7lncg,out = cg,in ＋ 8.223 7lncg,in - 8.284 1. The equation for SO2 removal in pilot scale was cg,out ＋ 3 105.685 5lncg,out = Cg,in＋ 3 105.685 5lncg,in -11 126.837 3 and the one for NOx removal was cg,out - 916.675 2lncg,out = Cg,in -916.675 2lncg,in -244.226 2 after revised.

关 键 词：生物滴滤塔 脱硫脱硝 中试 动力学模拟 

分 类 号：X701[环境科学与工程—环境工程]