喷动床半干式烟气脱硫脱硝实验研究  

Experimental research of semi-dry flue gas simultaneous desulfurization and denitrification with spouted bed

作　　者：张少峰[1] 李玲密[2] 王晋刚[1] 刘燕[1] 王德武[2] 

机构地区：[1]河北工业大学海水资源高效利用化工技术教育部工程研究中心,天津300130 [2]河北工业大学化工学院,天津300130

出　　处：《环境工程学报》2011年第8期1847-1851,共5页Chinese Journal of Environmental Engineering

基　　金：河北省科技厅科学研究与发展计划项目(02212221D);河北省科技厅河北省科技攻关计划项目(072156122);河北省高等学校科学技术研究青年基金项目(20100226)

摘　　要：烟气脱硫脱硝一体化技术适合现阶段我国国情,具有良好的应用前景。以尿素为吸收剂,在喷动床实验装置中进行半干式烟气脱硫脱硝研究,考察了该方法的可行性及尿素与污染物摩尔比、近绝热饱和温差、进口烟气温度、进口污染物浓度等主要操作条件对脱硫效率和脱硝效率的影响。结果表明:该方法在适当的操作条件下可获得85%以上的脱硫效率和70%以上的脱硝效率,可以满足工业规模应用的要求。同时,尿素与污染物摩尔比大于1.2后,污染物脱除效率反而明显降低,与其他半干式工艺差异显著;而其他3个操作条件对污染物脱除效率的影响规律与其他半干式工艺基本吻合。Simultaneous desulfurization and denitrification is applicable technology under our national conditions and has good application prospect.Semi-dry flue gas simultaneous desulfurization and denitrification was studied for its feasibility in spouted bed testing apparatus by using urea as absorbent.The effects of key operating parameters such as molar ratio of urea and air pollutant,approach to adiabatic saturation temperature,inlet temperature of flue gas and inlet concentration of air pollution on removal efficiency of SO2 and NOx were investigated.The results showed that in the proper condition the removal efficiency of SO2 and NOx were above 85% and 75%,respectively,which could satisfy most requirements of industrial scale applications.Different from other semi-dry processes,the removal efficiency of gaseous contaminants drop rapidly while molar ratio of urea and air pollutant was greater than 1.2.The influences of other factors of desulfurization and denitrification efficiency coincided with that of other semi-dry technologies.

关 键 词：喷动床 脱硫脱硝一体化 尿素 半干式工艺 

分 类 号：X701.3[环境科学与工程—环境工程]