193 / 222
186
2016
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
63
Table 6 Evaluation of STP project process economics
Investment cost (k$)
Fixed capital cost
55000
Intercalary interests(9% of Fixed capital)
4950
Start up costs(3 months of operating costs)
14200
Redeemable Capital
74150
Operating cost ($/t of feed)
Variable costs
$/ton of feed
Raw material
330
Cost of utilities
MP Steam
8
Thermal oil
2
Cooling Water
8
Electric power
2
Total variable cost
350
Labor
Operators and Personnel
25
Total variable cost + Labor
375
Fixed cost
Depreciation (10 years)
46
Maintenance (5% investment)
23
Laboratory expenses
5
Insurance, Licensing fee
25
Total fixed costs
99
Total operating costs
474
Price ($/t)
Production
(kg/t)
Water
0
50
0
Light ends
250
20
5
Gas oil
330
30
10
Base oil
800
741
741
Asphaltic residue
125
120
15
Total sales
771
Annual total sales(k$)
92508
Annual operating cost(k$)
56911
Profit before tax
35597
Cash flow(profits + depreciation)
41093
ROI (%)
25
Pay-out (years)
1.8
Product revenues (total yield of
base oil=95%)