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Studies of fretting wear. 1. The effect of physical variables

Book ID
104262836
Publisher
Elsevier Science
Year
1968
Weight
125 KB
Volume
1
Category
Article
ISSN
0041-2678

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โœฆ Synopsis

Three hydrogen treating processes for refining lubricating oils are described: hydrofining, mild hydrotreating and severe hydrotreating. Hydrofining is used to finish solventextracted base stocks. A variety of lubricants and speciality products can be manufactured by means of mild hydrotreating and its use for the production of naphthenic oils is described. Severe hydrotreating makes it possible to obtain high-viscosity index oils from raw petroleum feedstocks. For each of these processes data is presented to illustrate the yields and quality of typical products. Comparison is also made with corresponding products refined by conventional processes such as clay finishing, acid treating and solvent extraction.

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