溶剂气浮法分离甲基异丁基酮模拟废水  

Separation of Methyl Isobutyl Ketone from Simulated Wastewater with Solvent Sublation

作　　者：肖波[1] 常志东[1] 马印臣[1] 刘会洲[1] 

机构地区：[1]中国科学院过程工程研究所绿色过程与工程实验室

出　　处：《过程工程学报》2008年第3期472-477,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学重点基金资助项目(编号:2023605)

摘　　要：采用溶剂气浮法对含弱疏水性、有一定挥发性甲基异丁基酮(MIBK)的模拟废水(0.20%,)进行了分离研究.考察了气浮时间、氮气(N2)体积流速、油水相体积比、共溶质及表面活性剂等对MIBK溶剂气浮分离效率的影响,获得了各参数的优化结果.结果表明,当N2流速为40mL/min、油水相体积比为1:30、氯化钠浓度为0.50%(ω)、乙醇浓度为1.0%()时,溶剂气浮法对模拟废水中MIBK的分离效率可以达到25%～30%左右,而表面活性剂对提高溶剂气浮分离效率作用非常有限,仅在-10%～5%范围内.Solvent sublation was applied to separate methyl isobutyl ketone （MIBK） from simulated wastewater containing MIBK at the concentration of 0.20%（φ）, which is of limited hydrophobic property and volatility. The effects of bubbling time, N2 flow rate, Vorg/Vaq ratio, concentration and type of co-solutes and surfactants on MIBK removal rate of solvent sublation were investigated, and the optimal results were obtained. The results show that the MIBK removal rate can be 25%-30% when the N2 flow rate is 40 mL/nfln, the Vorg/Vaq ratio 1：30, the concentration of NaC1 0.50%（ω） and the concentration of ethanol 1.0%（φ）, while the positive effect of surfactants on the removal rate of solvent sublation is very limited, which varies from -10% to 5%.

关 键 词：溶剂气浮 分离 甲基异丁基酮 模拟废水 

分 类 号：TQ028.8[化学工程]