环境工程学报2009，Vol.3Issue(8)：1473-1477,5.
膜吸收法处理高浓度甲醛废气资源化技术研究
Treatment and resource utilization of high concentration formaldehyde with membrane absorption
摘要
Abstract
A new technique for treatment and resource utilization of high concentration formaldehyde with NaHSO3 by hydrophobic microporous hollow fiber membrane contactor was developed.Some important factors,such as the flux,temperature and concentration of the absorbent,the flux and concentration of the feed gas were thoroughly studied.Experimental results show that under the proper operation conditions,the absorbent flux is 4.17×10-6m3/s,the temperature of the absorbent is 60℃,the inlet flux and the inlet concentration of formaldehyde are 3.7×10-6m3/s and 566 mg/m3,respectively,the outlet concentration of formaldehyde is as low as 2.8 mg/m3.the removal rate of formaldehyde reaches 99.5% and the overall mass transfer eoeffieient is 4.46×10-5m/s.Moreover,the absorption product,CH2(OH)SO3 Na,can easily be separated and used as organic material or produce pure formaldehyde.The solution of NaHSO3 can be recycled as absorbent only with proper dilu tion.The proposed technique may be a novel way to treat and utilize the high concentration formaldehyde as a resource.关键词
疏水性中空纤维膜接触器/膜吸收/甲醛/资源化Key words
hydrophobic microporous hollow fiber membrane contactor/membrane absorption/formalde hyde/resource utilization分类
资源环境引用本文复制引用
朱振中,王志良,汪德成..膜吸收法处理高浓度甲醛废气资源化技术研究[J].环境工程学报,2009,3(8):1473-1477,5.基金项目
江苏省科技支撑计划一社会发展基金项目(BE2008685) （BE2008685）
江苏省环境工程重点实验室开放课题(KF2007001) （KF2007001）
