废MDEA溶液资源化回收利用研究

Research on resource recovery and utilization of waste MDEA solution

摘要: 采用管式膜过滤技术与电渗析脱盐技术，对200 m³的废MDEA溶液进行再生回收研究，以期解决废MDEA溶液的资源化回收利用问题。结果表明，废MDEA溶液悬浮物质量浓度由194 mg/L降至3 mg/L时，去除效率达到98.5%，热稳定盐质量分数由3.2%降至0.7%, 废MDEA质量分数由18.7%提高到19.1%；该管式膜过滤与电渗析脱盐技术为废MDEA溶液的资源化回收利用提供了一种新的技术路线。

Abstract: In order to solve the problem of resource recovery and utilization of waste MDEA solution, the application of tubular membrane filtration technology and electrodialysis desalination technology were studied by regeneration and recovery of 200 m³ waste MDEA. The results showed that in waste MDEA solution, the amount of suspended matter reduced from 194 mg/L to 3 mg/L, the removal efficiency reached 98.5%, the heat stable salts reduced from 3.2% to 0.7%, and the waste MDEA mass fraction increased from 18.7% to 19.1%. Therefore, this tubular membrane filtration and electrodialysis desalination technology provides a new technical route for resource recovery of waste MDEA solution.