BZ Series Insulating Oil Regeneration Device is developed complied with the Principle of physical and chemical. BZ Series are mainly used for purifying and regenerating the dielectric oils such as transformer oil, mutual inductor oil and switch oil and son on as well as used for the low-viscosity adsorption refining process. It is a conventional plant used a special-made filter aid to purify and regenerate the unsatisfied oil. BZ Series could purify and regenerate the degradation oil while the transformer; mutual inductor and oil switch are operating. It could remove the acidic substance, free carbon particle, coloring matter and deposited polluted substance as well as it could reserve the oil basic substance and antioxygenic property of the oils and recover the performance of degradation oil near to national standard.