So far there have been three sets of industrialized reclaimer with the reclamation technique of used oil refined by clay at high temperature The acidless process of replacing acid-clay refinement should be popularized for the good economical benefit. 白土高温精制废油再生工艺已经有三套工业化生产装置,它作为取代酸-白土精制的无酸精制工艺,具有明显的经济效益,应予推广。