应用蒸汽相变促进WFGD系统脱除细颗粒的技术分析  

Analysis on Fine Particles Removal From Wet Flue Gas Desulfurization System With Heterogeneous Condensation

作　　者：辛成运[1] 王海芳[1] 宋士娟[2] 刘锦辉[2] 杨林军[2] 

机构地区：[1]中北大学化工与环境学院,太原030051 [2]东南大学能源与环境学院,南京210096

出　　处：《工业安全与环保》2011年第4期15-16,8,共3页Industrial Safety and Environmental Protection

基　　金：江苏省自然科学基金(BK2008283);国家高技术研究发展计划项目(2008AA05Z306)

摘　　要：依据蒸汽相变促进细颗粒凝并长大的机理及典型的湿法烟气脱硫(WFGD)工艺特征,提出脱硫塔出口设置蒸汽相变室,以建立细颗粒凝结长大所需要的过饱和环境,进而提高WFGD系统对细颗粒的脱除效率。综合WFGD系统的腐蚀机理及水汽不易在低表面能材料表面凝结的特性,提出采用具有良好耐腐蚀性能的低表面能材料作为凝结室的内壁面或壁面衬里、涂料,以实现增进相变效果及防止酸性物质结露腐蚀的双重功效。According to the typical technology pattern of wet flue gas desulphurization（WFGD） system and the enlargement of fine particles by heterogeneous condensation,a novel process to remove fine particles with high efficiency by heterogeneous condensation in WFGD system is pointed out.Supersaturated vapour phase,necessary for the condensational growth of fine particles could be achieved at the outlet of the wet FGD scrubber by adding steam.The removal effect of fine particles would be improved with application of the material with low surface energy as substrate of fine particles condensation growth chamber.

关 键 词：蒸汽相变 细颗粒 湿法烟气脱硫 壁面材料 

分 类 号：X773[环境科学与工程—环境工程]