摘要
提出了一种在脱硫塔入口烟道处喷雾脱硫的新技术:将高效雾化喷嘴布置在烟道两侧,使烟气与雾化后的石灰石浆液预混合进入脱硫塔,增加浆液与烟气的接触时间.采用Fluent软件对雾化混合后的烟气流动状态进行模拟,验证该技术的可行性.结果表明:该方法有效提高了烟气进入脱硫塔后的均匀性;在入口SO2质量浓度为1 500mg/m3,运行A、B、C、D 4层喷淋层下开启烟道雾化喷嘴,脱硫效率由96.75%提高到97.85%以上.
A new technology was proposed for flue gas desulfurization at inlet flue duct of desulfurization tower, in which high-efficient atomizing nozzles are arranged at both sides of the duct, so as to premix the flue gas with atomized limestone slurry before entering the desulfurization tower, and to elongate the contact time of the slurry with flue gas. To verify the feasibility of this technology, Fluent software was used to simulate the flow field of the mixture. Results show that the technology helps to improve the uniformity of the flue gas mixture. The desutfurization efficiency may be raised from 96.75% to 97.85% when the atomizing desulfurization technology is adopted, in the case of the SO2 concentration being 1 500 mg/m3 , and the A, B, C and D four spraying layers are all put into operation.
出处
《动力工程学报》
CAS
CSCD
北大核心
2015年第10期830-834,共5页
Journal of Chinese Society of Power Engineering
基金
广东省科技计划资助项目(2011B090400289)
2012年广东省重点科技计划资助项目(2012B091000126)
关键词
脱硫
烟道喷雾
均匀性
脱硫效率
desulfurization
flue duct spraying
uniformity
desulfurization efficiency
