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أوابك العلمية لعام
�
ص لبحوث العلمية الفائزة بجائزة
�
عدد خا
مجلة النفط والتعاون العربي
161
العدد
- 2017
أربعون
المجلد الثالث و ال
Re-refining of Used Lubricating Oil and its Economic and Environmental Implications
61
8.2
Feedstock and product analyses
.
Table 5 shows process figures, including used oil composition, product´s characteristics
and utilities consumption. It is claimed that 95% of the oil fraction present in the used
lube oil feedstock is recovered. These data have obtained from CEP website.
Table 5 Process figures of the STP project
Source: STP
8.3
Process economics
For the purpose of the economic evaluation, the following assumptions have been
made:
Plant capacity: 120000 metric tons per year
Plant location: Gonfreville, France
Cost basis: 2012/2013
Stream factor: 8000 hours
Depreciation: 10 years
Process figures
Composition, wt% Normal Min-Max
Water
5.0
2.0-10.0
Light ends
2.0
1.0-4.0
Gas oil
3.0
1.0-4.0
Oil fraction
78.0
65.0-18.0
Asphaltic Residue
12.0
10.0-18.0
Characteristic
ASTM Light fraction Heavy fraction
Color
D1500
2.0
2.3
Density
D1298
860
868
Viscosity, cst @40ºC
D445
15-20
30-50
Flash point, ºC
D 92
205
220
Sulfur content
D4294
0.30
0.35
Metal content, ppm D6595
<10
<10
MP Steam, Kg/h
3400
Thermal oil, Kcal/h x 10
6
3.60
Cooling Water, m
3
/h
490
Electric power, Kwh/h
320
Used lube oil composition
Product characteristics
Utilities Consumption