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البحـث الثاني
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2016
أوابك العلمية لعام
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ص لبحوث العلمية الفائزة بجائزة
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عدد خا
مجلة النفط والتعاون العربي
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العدد
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أربعون
المجلد الثالث و ال
Re-refining of Used Lubricating Oil and its Economic and Environmental Implications
34
Figure 18 Schematic of the VAXON re-refining process
Source UNEP (2012)
4.12 Interline Technology
This technology was developed by Interline Resources Corporation. It can be applied
for production of different oils for vehicles (e.g. motor oils, transmission oils), industrial
oils and process oils. The European Environmental Press awarded its 2003 Bronze
Medal for
Interline Resources Corp.'s re-refining technology (BW, 2004).
4.12.1
Process description
The basic steps of this process are as follows:
Solvent extraction:
The used oil feed is mixed with propane and the mixture is then sent to a specific
solvent extractor, a proprietary system. Most of the additives, water and other
insolubles are separated from the propane/base oil mixture. Then, the solvent/oil
mixture is pumped to an oil/solvent separation system. The propane is vaporized at a
pressure high enough to allow the propane to be condensed at the cooling water
temperatures. The recovered propane is then returned to the solvent extractor to be re-
used with incoming used oil.
Flash and Vacuum distillation:
Propane free oil is sent to a light hydrocarbon stripper where the last traces of propane
and low-boiling hydrocarbons (gasoline) are removed.
Waste oil
Distillation2
Distillation3
Distillation4
Distillation1
Distilled oil
Asphalt
Distilled oil
Chemical Treatment
Vac Distillation
Base Oil