Regeneration of Used Vacuum Pump Oil by Furfuryl Alcohol
Solvent extraction technique is one of the cheapest and most efficient processes experienced in recycling of used lubricating oils. In this paper, the performance of furfuryl alcohol in recycling used vacuum pump oil was evaluated experimentally. The effect of the most critical parameters (solvent to oil ratio, and extraction temperature) was investigated. The results show that viscosity index and refractive index of refined oil was related to the solvent to oil ratio. Viscosity index and the refractive index come to a reasonable value at 90°C when solvent to oil ratio equal to 1.5. The difference of IR spectrum of the used vacuum pump oil and re-refined vacuum pump oil show that absorption peaks at 1745cm – 1 and 1160 cm – 1 disappeared after solvent extraction.
Qunjie Xu, Honghua Ge and Junxi Zhang
X. C. Yan et al., "Regeneration of Used Vacuum Pump Oil by Furfuryl Alcohol", Advanced Materials Research, Vols. 361-363, pp. 569-573, 2012