摘要
为研究喷雾半干法烟气脱硫特性,搭建了试验平台,分别选用Ca(OH)2溶液、Na2CO3溶液和NaHCO3溶液进行了脱硫特性试验研究,分析了进口烟气温度、进口SO2质量浓度、化学计量比和绝热饱和温差对脱硫效率的影响,并以某垃圾电厂为例进行了经济性分析。结果表明:保持出口烟气温度不变,随着进口烟气温度的提高,3种吸收剂的脱硫效率均有一定的提高;随着进口SO2质量浓度的增大,脱硫效率降低;在相同条件下,使用NaHCO3溶液作为吸收剂时脱硫效率最高,Na2CO3溶液次之;使用Ca(OH)2溶液作为吸收剂,综合脱硫效率可达84%,工程上将其作为吸收剂更合适。
To study the characteristics of medium-temperature flue gas desulfurization by semi-dry spray process,an experimental platform was built up,based on which,experimental tests were conducted to analyze the effects of inlet gas temperature,inlet SO2concentration,stoichiometric ratio(SR)and AAST on the desulfurization efficiency,respectively with Ca(OH)2solution,Na2CO3solution and NaHCO3solution as the absorbents.Meanwhile,a techno-economic analysis was carried out by taking a refuse power plant as an example.Results show that when the outlet gas temperature keeps constant,the desulfurization efficiency of above three absorbents improves with the increase of inlet temperature,but reduces with the rise of inlet SO2concentration.Under same conditions,the desulfurization efficiency of NaHCO3solution is the highest,followed by Na2CO3solution and Ca(OH)2solution.When Ca(OH)2is taken as the desulfurization absorbent,the comprehensive desulfurization efficiency can reach 84%.Considering the economy and desulfurization efficiency,it is recommended adopting Ca(OH)2solution as the absorbent in engineering applications.
作者
郭士义
潘卫国
康迪
GUO Shiyi;PAN Weiguo;KANG Di(Shanghai Electric Power Station Environmental Protection Engineering Co.,Ltd.,Shanghai 201600,China;Shanghai Environmental Protection Engineering Technology Research Center,Shanghai 200090,China;School of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2020年第5期412-418,432,共8页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(21546014)
上海市科委科技攻关资助项目(18DZ1202502)。
关键词
半干法
脱硫效率
烟气脱硫
经济性分析
semi-dry process
desulfurization efficiency
flue gas desulfurization
economic analysis
