By Don M. Pirro, Ekkehard Daschner, A.A. Wessol
Discusses product fundamentals, desktop parts that require lubrication, tools of software, lubricant garage and dealing with, and lubricant conservation.
Read or Download Lubrication Fundamentals, Second Edition PDF
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Additional info for Lubrication Fundamentals, Second Edition
Removed from the oil by filtration. Solvent is removed from both the oil and the wax and recycled for reuse. 20. In this unit, the waxy oil is mixed with solvent and heated sufficiently to dissolve all the oil and wax. The purpose of this step is to destroy all the crystals that are in the oil so that the crystals that will be separated at the filter are formed under carefully controlled conditions. The solution is then cooled, first with cooling water, then by heat exchange with cold product, and finally by a refrigerant.
8. 9. 10. 11. Hydrotreated VHQ Hydrocracked HDC, VHVI, or XHQ Solventrefined (reference) Low Moderate High — Saturate olefins, aromatics; remove S and N Solvent-refined Saturate olefins, aromatics; remove S and N Saturate olefins; remove S and N Open Ring structures — Solvent-refined — Little change from feedstock 90–105 Lower aromatics, S and N Distillate HDC and VHVI distillate wax XHQ Very low aromatics, S, and N 105ם 90–105 22–460 22–100 95–105 (HDC), 115–130 (VHVI), 130( םXHQ) 22–100 (HDC/VHVI) 22–46 (XHQ) Improved color, demulsibility, foam stability Excellent Improved oxidation stability Much improved oxidation stability — Very good Moderate Excellent 22–460 Vacuum distillation Propane deasphalting Furfural extraction Solvent extraction Hybrid processing MEK dewaxing Catalytic dewaxing Wax isomerization Hydrofinishing Hydrotreating Hydrocracking Because increasing quality demands are being placed on lubricating oils for some critical applications, base stocks must be able to provide much higher performance levels.
In the example, some overlap is shown, and, in reality, overlap is present in the products of commercial vacuum towers. , a light neutral with too much viscous material, which will be difficult to dew), a vacuum tower must be run properly, to prevent excessive overlap. , too much overlap with the vacuum residuum) not only causes processing problems but results in inferior product quality. 13 Lube distillate fractionation viscosities. Copyright 2001 by Exxon Mobil Corporation. All Rights Reserved.