湿式氨法烟气脱硫工艺影响因素的试验研究  

Experimental study on factors affecting the ammonia-based WFGD process

作　　者：丁红蕾[1,2] 苏秋凤[1] 张涌新 文雯 高翔[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室浙江杭州310027 [2]上海电力学院能源与机械工程学院,上海200090 [2]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [3]浙江蓝天环保设备工程有限公司,浙江杭州310012

出　　处：《热力发电》2014年第1期96-98,136,共4页Thermal Power Generation

基　　金：国家“十二五”支撑计划资助项目(2011BAA04B08);国家杰出青年科学基金(51125025)

摘　　要：在冷态试验条件下,于小型逆流喷淋塔脱硫系统上考察了湿式氨法脱硫工艺参数对脱硫效率的影响.结果表明：pH值是影响脱硫效率的主要因素,当脱硫液pH值从4.5升至5.0时,脱硫效率从69.6％增至94.1％,过高的pH值会增大氨逃逸率,适宜pH值为5.5～6.0之间;适当增加烟气停留时间和液气比有助于提高脱硫效率,而提高入口SO2烟气浓度会降低脱硫效率.Aiming at investigating the ammonia-based wet flue gas desulfurization （WFGD） process,the influence of process parameters on desulfurization efficiency was experimentally stud- ied on a small scale countercurrent spray tower FGD system, under cold state condition. The re- sults indicated that, the desulfurization efficiency was mainly affected by pH value, which in- creased from 69.6% to 94.1% when the pH value rose from 4.5 to 5.0. The optimal pH value varies from 5.5 to 6.0. Properly increasing the residence time of flue gas and enhancing the liquid- gas ratio was helpful to the desulfurization efficiency. However, the desulfurization efficiency dropped when the inlet SO2 concentration was increased.

关 键 词：氨法 湿法烟气脱硫 脱硫效率 pH值 液气比 

分 类 号：X701.3[环境科学与工程—环境工程]