研究论文
向波涛,王涛,沈忠耀.乙醇废水的超临界水氧化处理工艺研究[J].环境科学学报,2002,22(1):17-20
乙醇废水的超临界水氧化处理工艺研究
- Study on the process of ethanol wastewater disposal by supercritical water oxidation
- 摘要：研究了以超临界水氧化法(SCWO)处理乙醇废水的工艺过程.实验表明,一氧化碳和二氧化碳分别是反应中间产物和最终产物.550℃、25MPa、停留时间大于15s时,SCWO能将乙醇完全氧化为二氧化碳,达到彻底处理的目的.随停留时间增大、温度升高,乙醇的去除率增大,而压力和氧气浓度的变化对过程没有显著影响.
- Abstract：As the typical representation of alcohols wastewater ethanol was selected and its oxidation in supercritical water was investigated.The experiments were performed in an isothermal,plug flow reactor at temperatures from 475 to 550℃,pressures from 22 to 30MPa,reactor residence times from 0.6 to 98.3s,and oxygen/ethanol molar feed ratios from 4.56 to 9.09.The oxidation of ethanol was fast in supercritical water.At temperature of 550℃,pressure of 25MPa and residence time of more than 15s,the reaction conversion of ethanol to carbon dioxide was near 100 percent.Carbon monoxide was the major intermediate of the process.The ethanol conversion increased with increasing residence time and temperature and did not obviously change with varying pressure or oxygen concentration.
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