真空膜蒸馏法再生烟气脱硫废液的试验研究  

Experimental study on regeneration of SO_2-rich solution from flue gas desulfurization(FGD) by vacuum membrane distillation

作　　者：韩永嘉[1] 王树立[1] 李辉[2] 郗春满 

机构地区：[1]江苏工业学院江苏省油气储运技术重点实验室,江苏省常州市213016 [2]苏州苏净保护气氛有限公司,江苏省苏州市215122

出　　处：《炼油技术与工程》2009年第12期19-22,共4页Petroleum Refinery Engineering

摘　　要：复合型甲基二乙醇胺(MDEA)水溶液对烟气二氧化硫具有良好的吸收性,其废液再生循环利用技术的研究进一步完善了烟气脱硫设备节能减排之需。实验采用中空纤维陶瓷膜组件为再生器,用真空膜蒸馏法再生吸收了二氧化硫的MDEA富液,着重研究了废液温度变化对其再生率和蒸馏通量的影响,用气相色谱法测得废液在各实验温度下的再生色谱图。结果表明:废液的最佳再生温度为70℃,此时再生率可达98%。The compound methyldiethanolamine （MDEA） aqueous solution offers high adsorption efficiency of SO2 in flue gas. The research and development of waste solution regeneration and reutilization technologies have provided effective means for flue gas desulfurization equipment to meet the requirements of energy conservation and emission reduction. In the tests, the polypropylene hollow fiber membrane contactor was used as regenerator and vacuum membrane distillation was applied to regenerate waste rich MDEA aqueous solution absorbed with SO2 from flue gas. The impacts of the solution temperature variations on regeneration efficiency and distillation flux were studied in detail. It is shown by the chromatograms that the most appropriate regeneration temperature for VMD is 70 ℃ at which the regeneration efficiency can reach 98%.

关 键 词：废液再生 VMD 气相色谱 中空纤维陶瓷膜 

分 类 号：X742[环境科学与工程—环境工程]