废FCC催化剂氧化处理炼油液态烃碱渣

Catalytic Wet Air Oxidation of Liquid Hydrocarbon Spent Caustic Wastewater of Refinery Using Spent FCC Catalysts

以废FCC(催化裂化)催化剂为原料,制备催化氧化催化剂,来处理炼油液态烃碱渣废水,考察处理前后废水COD的变化,探讨了处理工艺及其影响因素。结果表明:废FCC催化剂经过700℃焙烧处理,其比表面积和孔隙基本恢复;在氧分压为0.6MPa,催化剂用量为2g/L,反应温度为190℃,反应时间为1h,搅拌速度为300r/min时,碱渣废水处理效果最佳,其COD去除率为74.12%,比单纯湿法氧化效果提高近30个百分点。

Using spent FCC catalysts as raw materials,oxidation catalysts were prepared to deal with the liquid hydrocarbon spent caustic wastewater of refinery.Wastewater COD were investigated,the treatment process and influencing factors were discussed,too.The results showed that： The specific surface area and pore of Spent FCC catalysts recovered after being calcinated at temperature of 700℃;When the oxygen partial pressure under room temperature was 0.6MPa,catalysts dosage was 2g/L,reaction temperature was 190℃,reaction time was 1h,stirring rate was 300r/min,the effect of treatment was the best and COD removal could be achieved to 74.12%,it increased by nearly 30 percentage points than simple WAO.