Upgrading of Light Dewaxed Oil through Hydrofinishing and Additives Blending for Producing Automatic Transmission Fluid| Science Publications

American Journal of Applied Sciences

Abd I.H. El-Moneim¹  Mohamed S.E. Gayar¹  Marwan¹  Ahmed Aly¹  Gamal A.N Gohar¹ 

关键词: Light dewaxed oil;    raffinate;    hydrodesulfurization;    hydrodenitrogenation;    automatic transmission fluid;   

DOI  :  10.3844/ajassp.2006.2136.2146

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Light dewaxed oil was produced through dewaxing process of the light waxy distillate raffinate of crude oil from Western Desert of Egypt using methyl ethyl ketone/toluene mixed solvent. Hydrofinishing process was used to remove the non-hydrocarbon constituents and to improve the physicochemical properties of the produced oils such as color, viscosity index, inhibition responses, oxidation and thermal stability. The operating parameters which affected the quality of the hydrofinished oils were studied separately at different values that including reactor temperature, reactor pressure, liquid hourly space velocity and hydrogen to hydrocarbon ratio. The optimum operating conditions to be adopted for producing high quality automatic transmission fluid base oil were reactor temperature 290 ^oC, pressure 130kg cmˉ², liquid hourly space velocity 0.4 hˉ¹ and hydrogen/hydrocarbon ratio 800 Nm³ Mˉ³. The effect of changing hydrofinishing temperature and liquid hourly space velocity on the hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) reactions as well as their thermodynamic parameters were estimated. Calculations of activation energy (Ea) and free energy of activation (ΔG) indicated that HDS was easier to occur than HDN and these reactions are more faster at higher temperatures. The effect of commercial and formulated additives on the quality of the hydrofinished oil was also studied. Automatic transmission fluid possessing the Dexron IID specification was produced by adding 7 wt% from Infenium T442 additive or by adding 9 wt% from Lubrizol

【 授权许可】

Unknown