尿素/添加剂湿法烟气同时脱硫脱氮研究(Ⅱ)——净化过程中SO_2和NO_x的吸收特性  

Simultaneous Desulfurization and Denitrification from Flue Gas by Using Urea/Additive Solution (Ⅱ):Absorption Characteristics of SO_2 and NO_x in Cleaning Process

作　　者：岑超平[1] 古国榜[2] 

机构地区：[1]国家环境保护总局华南环境科学研究所,广东广州510655 [2]华南理工大学应用化学系,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2004年第2期14-17,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：科技部 863计划项目 (2 0 0 2AA 52 9160 );广东省科技计划重大专项(A 3 0 40 2 0 3 );广东省环保局项目(2 0 0 1-3 4 )

摘　　要：简述了吸收过程传质理论———双膜理论的基本原理 ,据此研究了尿素/添加剂湿法烟气同时脱硫脱氮过程中SO2 和NOx 的吸收特性 .实验结果表明 ,在尿素/添加剂水溶液中 ,烟气中SO2 的吸收由气膜控制 ,是液相中伴有快速不可逆化学反应的气体吸收 ;NOx 的吸收由气膜和液膜共同控制 。The basic principle of the two-membrane theory as the mass transfer th eory in absorption process was briefly stated. The principle was then used to in vestigate the absorption characteristics of SO 2 and NO x in the process o f simult aneous desulfurization and denitrification from flue gas using urea/additive sol ution. The experimental results show that, in urea/additive solution, the absorp tion process of SO 2 in flue gas going with quick irreversible chemical reactio ns is controlled by the gas membrane, while that of NO x going with slow irre versib le chemical reactions is controlled by both the gas membrane and the liquid memb rane.

关 键 词：尿素 添加剂 烟气 脱硫 脱氮 吸收特性 

分 类 号：X511[环境科学与工程—环境工程]