US20100032342

un?t for their intended use, are generated World-Wide. Used
oil that is derived from 150 million cars or more and other
by the cyclone separator; (4) introducing lique?ed propane
Clealloil Limited, Yuen Long (HK)
12/188,386
and other contaminants from the used lubricating oil, While at
the same time, returns the base oil fraction that once again can
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Patent Application Publication
Feb. 11, 2010
US 2010/0032342 A1
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intervention and neW legislation are increasingly demanding the material recycling, rather than the burning or dumping, of Waste products. Used lubricating oil can contain 60 to 97%
quality to its original quality speci?cations and can be blended With additives to produce lubricating oil With speci?c
function and characteristic. [0008] According to one embodiment, a method of re-re
re?ning system and process provide a highly ef?cient and
environmentally sound alternative for reclaiming and reusing
used oils. The re-re?ning process advantageously removes the additives, Water, Wear metals and other contaminants from the used lubricating oil, While at the same time, returns the
?ning used oil includes the steps of: (l) ?ltering the used oil through a multi-layer ?lter; (2) processing the used oil in a
cyclone separator to reduce the Water content of used oil after the oil has been ?ltered; (3) processing the used oil in a ?ash toWer to evaporate all of the Water and light organic fraction
oils With poorer quality than virgin base oils; and (4) are
[0001]
The present invention relates in general to the petro
costly to implement.
SUMMARY
leum industry and in particular, relates to the use of a multi stage process that incorporates a number of components,
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(73) Assigneer
(21) Appl. No.:
highly e?icient and environmentally sound alternative for
reclaiming and reusing spent oils. The re-re?ning process
advantageously removes the additives, Water, Wear metals
the series to a propane recovery process Where propane is
not satisfactorily perform its lubricating function and there fore must be replaced. Public opinion and government
into the used oil to form an oil/propane mixture; (5) process ing the used oil in a multi-stage extraction process that includes a plurality of extraction toWers linked in series,
enhanced removal of undesired components that settle in the toWer and are discharged to a storage container; and (6) trans
ferring the oil/propane mixture from the extraction toWer in
over time it does become contaminated With heavy metals, Water, fuel, carbon particles and degraded additives. Eventu
ally, the lubricating oil becomes so contaminated that it can
US 2010/0032342 A1
Feb. 11, 2010
OIL RE-REFINING SYSTEM AND METHOD TECHNICAL FIELD
being implemented over the years to extract base oils from
lubricants, most of these techniques (1) have loW product yields; (2) do not solve potential pollution; (3) produce base
including cyclone separators and multi reactors, to reclaim
useful oil fractions from used oil.
BACKGROUND
[0007]
According to this invention, a lubricating oil re
Wherein each toWer has an inverted cone shape to promote
machines accumulates in thousands of service stations, repair
shops and industrial plants.
[0003] Lubricating oil does not Wear out during use but
be blended With additives and can be restored to its original
(22) Filed:
Aug. 8, 2008
100 »-\
130
high quality speci?cations for reuse Without causing second ary pollution.
US 20100032342A1
(19) United States (12) Patent Application Publication (10) Pub. No.: US 2010/0032342 A1
Marden
(54) OIL RE-REFINING SYSTEM AND METHOD
(43) Pub. Date:
Feb. 11, 2010
Publication Classi?cation
(75) Inventor:
Antony Louis Marden, Hong Kong
(HK)
( ) 5110M 175/02
(52)
51
I t. Cl.
(200601)
ABSTRACT
us. Cl. ...................................................... .. 208/180
Correspondence Address:
Leas“? Ellis LLP _
(57)
A lubricating oil re-re?ning system and process provide a
81 Mam street’ sulte 503
Whlte P131115, NY 10601 (Us)
base oil fraction that once again can be reformed to higher
[0002] The sharp increase in demand in lubricating oils and the limited petroleum reserves throughout the World have caused a sharp increase in the price of petroleum products and have led to great concern that the limited supplies Will not meet future demand given the sharp increase in the demand from developing and developed countries. In recent years, large developing nations have become more industrialiZed and this has resulted in the demand for petroleum products in
from used oil after a large amount of Water has been removed
these countries rising signi?cantly. In addition, each year
large amounts (e.g., 150 million barrels or more) of used lubricating oils, such as automotive oils, gear oils, turbine oils, and hydraulic oils Which through usage or handling are