催化湿式氧化技术处理甲醇制汽油的废水研究

Treatment of Wastewater From Methanol-to-Gasoline Process by Catalytic Wet Air Oxidation

甲醇制汽油是非石油资源合成技术中关键的一项工作,该工艺过程中产生大量的废水。采用高压釜作为反应器,以催化湿式氧化技术对甲醇制汽油(MTG)废水进行处理,催化剂为实验室制得的钌/铈锆复合氧化物催化剂,考察了反应温度、催化剂投加量、反应时间和搅拌转速对废水COD去除率的影响,结果表明,在反应温度240℃、催化剂投加量10 g/L、搅拌转速300 r/min的反应条件下,反应2 h后废水COD去除率达到98.68%。

Methanol-to-gasoline process is a key technique in non petroleum resources synthesis technology,but a large amount of wastewater is produced in the process.In this paper,using an autoclave as the reactor,self-made Ru/CeO2-ZrO2 complex oxide as the catalyst,MTG wastewater was treated by catalytic wet air oxidation.Effects of reaction temperature,catalyst dosage,reaction time and reaction stirring rate on COD removal rate of MTG wastewater were investigated.The results show that when the reaction temperature is 240 ℃,catalyst dosage is 10 g/L and reaction stirring rate is 200 r/min,COD removal rate of MTG wastewater after the treatment for 2 h can reach to 98.68%.