Refining Used Lubricating Oils

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Then each product is tested again for quality and purity before being released for sale to the public. But you can not simply compare those ratios and conclude that refining from crude is immensely inefficient. Crude oil refining yields large amounts of fuels. Below is a comparison of refining from used motor oil and refining from crude.

Re-refining one unit of used motor oil will yield:. The sludge "residue" associated with engine oil recycling, which collects at the bottom of re-refining vacuum distillation towers, is known by various names, including "re-refined engine oil bottoms" abbreviated "REOB" or "REOBs". A report from the U.

Some producers of asphalt for paving have—openly or secretly—incorporated REOBs into their asphalt, creating some controversy and concern in the traffic engineering community, with some experts suggesting it reduces the durability of the resulting pavement. From Wikipedia, the free encyclopedia.

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See also: Motor oil: Re-refined motor oil. Environment portal Cars portal. The Oil Daily. Retrieved April 17, Environmental Encyclopedia. Retrieved March 22, United Nations Environment Programme. Retrieved November 27, Waste Management. September Resource Recycling. May More info here.

Refining Used Lubricating Oils - CRC Press Book

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However, it must be re-refined mainly due to the accumulation of physical and chemical contaminants in the oil during service. Refining Used Lubricating Oils describes the properties of used lubricating oils and presents ways these materials can be re-refined and converted into useful lubricants as well as other products. It provides an up-to-date review of most of the processes for used lubricating oil refining that have been proposed or implemented in different parts of the world, and addresses feasibility and criteria for selecting a particular process.

The book begins with an overview of lubricating oil manufacturing, both petroleum-based and synthetic-based. It reviews the types and properties of lubricating oils and discusses the characteristics and potential of used lubricating oils.

Small Oil refinery machine

The authors describe the basic steps of used oil treatment including dehydration, distillation or solvent extraction, and finishing. They explore the combustion of used oil for use as fuel, covering chemistry and equipment, fuel oil properties, and combustion emissions. The book considers alternative processing options such as refinery processing and re-refining.

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Automotive oil recycling

It also reviews the major refining processes that have been suggested over the years for used oil. The book addresses economic, life cycle assessment, and other criteria for evaluating the attractiveness of an oil recycling project, examining various costs and presenting an economic evaluation method using an Excel spreadsheet that can be downloaded from the publisher's website.


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The book concludes with a chapter offering insights on how to choose the most suitable process technology.

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