【摘要】 针对含油量为30.2%的胜利油田郝现联合站集输罐底的油泥中原油的回收及污染治理问题,提出了热碱水洗涤气浮三相分离处理技术。考察了洗脱过程的适宜条件。结果表明,在碱的质量分数为2%,碱与油泥体积比为3∶1,70℃时搅拌洗涤10 min,气浮分离15 min的条件下,脱油率可达94.3%。热碱水可循环使用,脱除的原油经精馏处理可回收,脱油后底泥中残余的石油类含量低于1%,达到农用污泥中污染物控制标准GB4284-85。处理药剂成本低,有较高经济效益。更多还原

【Abstract】 The oil content in sludge is up to 30.2% at the bottom of gathering tanks in Haoxian multi-purpose station,Shengli Oilfield.For the problem of oily sludge treating,hot alkaline solution cleaning-floatation separation method for treating oily sludge was proposed.The proper experimental conditions of cleaning-floatation were presented.The concentration of alkaline is 2%,and cleaning temperature is 70 ℃.The ratio of liquid and soil is 3∶1,and time of cleaning and floatation is 10 minutes and 15 minutes respectively.The de-oiling rate is 94.3% under the proper conditions.The hot alkaline solution can be recycled,and oil cleaned down can be recovered.The concentration of residual oil in soil is bellow 1%,which satisfied the standard of GB4284-85.Low cost of alkaline and high economic benefits are the advantages of this method.更多还原