摘要
提出了微波共沸精馏解吸概念,针对酒精工业中产生的淡酒液用活性炭吸附-真空微波共沸精馏解吸方法回收其中可利用的乙醇。设计了载乙醇活性炭真空微波共沸精馏解吸试验流程。用活性炭对水中低浓度的乙醇进行吸附,饱和后在真空条件下用微波辐照解吸。试验结果表明,载乙醇活性炭在真空微波系统中100s后基本解吸完全;微波功率对乙醇出口浓度曲线影响较大;再生后活性炭的损耗率低于5%。低浓度乙醇水溶液经多次活性炭吸附-真空微波共沸精馏解吸循环后,乙醇浓度可提纯至98%以上。
The microwave desorption-azeotropic distillation was used to recover ethanol in waste water from ethanol industry under vacuum condition. The flow charts for microwave desorption-azeotropic distillation of ethanol-loaded activated carbon under vacuum condition were designed. Activated carbon is used in adsorption of low concentration ethanol in water, and the saturated carbon is regenerated by microwave irradiation under vacuum condition. The results showed that the ethanol-loaded activated carbon can be desorbed nearly completely after 100s; the microwave power has an important effect on the outlet concentration curve of ethanol; the mass defect of the regenerated carbon is lower than 5%. After several processes of activated carbon adsorption and microwave desorption-azeotropic distillation under vacuum condition, the concentration of ethanol can come up to over 98%.
出处
《水处理技术》
CAS
CSCD
北大核心
2008年第8期22-24,41,共4页
Technology of Water Treatment
基金
云南省教育厅科学研究基金资助项目(5Y0528D)
关键词
微波共沸精馏解吸
真空
活性炭吸附
乙醇
microwave desorption-azeotropic distillation
vacuum
activated carbon adsorption
ethanol
