改进氨吸收法同时脱硫脱硝试验研究  

Experimental study on the simultaneous desulfurization and denitrification by improved ammonia absorption method

作　　者：姜艳艳[1] 张朋[1] 李娟娟[1] 江斌[1] 潘理黎[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310032

出　　处：《环境污染与防治》2014年第6期25-29,共5页Environmental Pollution & Control

基　　金：浙江省科技计划项目(No.2010C33069)

摘　　要：以氨水和尿素作为混合吸收剂,同时以三乙醇胺作为添加剂,进行了模拟工业锅炉烟气同时脱硫脱硝试验。考察了SO2和NO的初始浓度、尿素和三乙醇胺的质量分数、氨水体积分数、烟气流量、液气比和反应温度对脱硫脱硝效果的影响。结果表明,当NO初始质量浓度为1 000mg/m3,SO2初始质量浓度为1 780mg/m3,尿素质量分数为0.3%,氨水体积分数为0.3%,三乙醇胺质量分数为0.02%,烟气流量为20m3/h,液气比为20L/m3,温度为20℃时,脱硫率为97%,脱硝率为58.7%。该方法可以达到同时脱硫脱硝的目的。The simultaneous desulfurization and denitrification of simulated industrial boiler flue gas was carried out by using urea/ammonia as the mixed absorbent and triethanolamine as additive. The effects of the initial SO2 and NO concentration, urea mass fraction, triethanolamine mass fraction, ammonia volume fraction, flow rate of the simulated flue gas,liquid/gas ratio and the reaction temperature on the removal efficiency of the pollutants were investigated. The results showed that when the initial SO2 concentration was 1 780 mg/m^3 ,the initial NO concentration was 1 000 mg/m^3 , the urea mass fraction was 0. 3 %, ammonia volume fraction was 0.3 %, triethanolamine mass fraction was 0.02 %, flow rate of flue gas was 20 m^3/h,liquid/gas ratio was 20 L/m^3 and reaction temperature was 20 ℃, SO2 and NOx removal efficiency could reach to 97% and 58.7% respectively. This method presented perfect performance on simultaneous desulfurization and denitrifieation.

关 键 词：工业锅炉烟气 同时脱硫脱硝 尿素 氨水三乙醇胺 

分 类 号：X701[环境科学与工程—环境工程]