NEW OIL REGENERATION PLANT
WITH REACTIVATED
FULLER’S EARTH
Oil regeneration with reactivated
Fuller’s Earth
Applications: Reduction in oil acidity from 0.4 mg Koh/gm to 0.03 mg
Koh/gm.
Advantages: The same quantity of Fuller’s earth can be used >300
times due to the unique reactivation process.
Benefit of the oil regeneration
process compared to conventional
purification system.
Remove contaminants such as acids, sludge, anilines
and decaying products.
-Improve color, oxidation stability, Interfacial tension
and power factor
-Extend the oil life-time cycle
-Extend more significantly the life-time cycle of power
transformers (with regular regeneration treatment)
Strengths & Weaknesses of the
different solutions to solve acidity
Strengths
Weaknesses
Change the
oil to a new
or reclaimed
oil
No specific equipment
required: (oil pump, oil
treatment plant, tank,..)
No graduate people
required
Power shutdown
Subject to new oil price $$$$$ or
difficult to find reclaimed oil.
Old oil has to be disposal or resale
for third applications at very low
price.
Short term solutions, no clean out of
the transformer.
Several people requested
Regenerate
the oil
No power shutdown
during regeneration
process
Short pay back return
No oil to eliminate
No subject to oil price
fluctuation or shortage
Clean out the
transformer
Specific equipment required
Not a lot of equipment available
Graduate people required
Main differences between both
solutions to regenerate dielectric oil
Regeneration with
disposable Fuller’s
earth
Regeneration with
reactivated Fuller’s
earth
Oil losses
6%
0,4%
Fuller’s earth
losses
100%
0,01% by reactivation
(limit 70% before
replacement)
Tasks
Replacement of
Fuller’s earth at
saturation
Replacement almost
once a year
Workforce
Several people to
handle operations
One people for normal
operations
Few people for Fuller’s
Earth replacement.
Oil test results (general)
TEST DESCRIPTION
METHOD
UNIT
INITIAL OIL
CONDITION
ERP 5000
SINGLE PASS
QUALITY
8
0,01
<15
>40
Brown/Cloudy
Clear Light Yellow
GAS CONTENT
GC
%v/v
IFT
ASTM
Dynes/cm
COLOR APPEARANCE
--
Visual
TAN DELTA (90°C)
IEC 247
--
<0,01
<0,005
OXIDATION STABILITY
IEC 74
164 HRS
--
Depleted
Restored
MOISTURE
IEC 733
ppm
<200
5
BREAKDOWN VOLT
IEC 156
kV
<30
>75
ACIDITY
IEC 296
mgKOH/gm
0,4
<0,03
ARRAS MAXEI Product range
MAS 5000
ERP
6 Columns
MAS 5000
ERP
9 Columns
MAS 5000
ERP
12 Columns
MAS 5000
ERP Dual
bank of columns
Flow rate
5000 l/h
5000 l/h
5000 l/h
5000 l/h
Regenerated
oil
2400 l/day
3600 l/day
4800 l/day
Capacity x 2
Filtration
1µm absolute
1µm absolute
1µm absolute
1µm absolute
Treatment
heating power
80 k W
80 k W
80 k W
80 kW
Reactivation
heating power
36 kW
54 kW
72 kW
3 kW per column
Total heating
power
116 kW
134 kW
152 kW
Reactivation+ Treatment
heating power
Limit vacuum
closed suction
0,5 mbar
0,5 mbar
0,5 mbar
0,5 mbar
Vacuum in
treatment
(mbar)
0,5 to 5
0,5 to 5
0,5 to 5
0,5 to 5
Fullers earth
quantity
600 kgs
900 kgs
1200 kgs
Nbre columns x 100 kgs
General layout
Presentation
SKID
SEMI TRAILER
Container design for
easy access and
maintenance
SEA CONTAINER (20’ OR 40’)°