絮凝-白土复合再生废润滑油

REGENERATION OF WASTE LUBRICATING OIL BY FLOCCULATION-CLAY PROCESS

结合国内外废润滑油再生技术的研究与现状,提出以絮凝为主白土精制相结合的无污染、低成本的再生工艺技术。在前期絮凝剂脱色再生试验的基础上,重点考察白土精制的最佳再生参数,结果表明,在白土添加量8%～11%、白土接触反应温度130℃左右、搅拌时间20min、恒温沉降温度80℃、沉淀3h的条件下有最佳的再生效果。试验表明,在该复合再生条件下,经过再生处理后的废油基本上达到了该级别新油的标准。

Based on the research of regeneration and recycling technology at home and abroad,the non-pollution,low-cost regeneration technology which is on the basis of flocculation and combined with activated-clay was proposed.Depending on the earlier experiment of flocculants decoloring and regeneration,it was emphasized that the best parameters on activated-clay refining the waste oil was that when the clay dosage was 8%～11%、 the clay contact reaction temperature was about 130℃、stirting time was 20 min and the constant temperature subsidence temperature is 80℃ with a settling time of 3 h the regeneration effect is best.Under these regeneration conditions,the used oil basically reached the fresh oil standard.