This case study illustrates an application on an oil refinery.
Main Reasons for use:
- Increase efficiency of production
- Reduce water consumption
- Reduce excess flaring of gases
Background
Fushun Oil Refinery No.2 is located in NE China. Fushun has 2 medium sized oil refineries both have installed Wap-Flaro for various reasons.
Ambient temperature is -5°c in winter and 24°c in summer.
Fushun Oil Refinery No.2 has two sites, the North Plant and the South Plant. Wap-Flaro has been installed on both sites.
The North Plant Wap-Flaro generates 400m³/h
The South Plant Wap-Flaro generates 800m³/h
North Plant
Used to chill water in gasoline production platform. This reduces the need to flare and increases the volume of production of gasoline with the same feedstock. The chilled water in circulation also reduces the water volumes used.
Fig 1 Fushun No.2 Wap-Flaro North Plant, picture illustrates 4 modules
A study was undertaken before installation in 1992 and after commissioning in 1993.
| |
1992
Jan-Jul |
1993
Jan-Jul |
Total Difference |
MTEB Recovery Rate (gas form) |
25194mt |
44613mt |
+74% |
Distillate Process Loss |
3.45% |
2.51% |
-0.94% |
MTEB Process Loss |
2.28% |
1.57% |
-0.71% |
MTEB Production Capacity |
6997mt |
9883mt |
+40% |
Water Volumes
Water saving each day of 10,000mt
Price of water is currently 0.87RMB per mt
A total saving in water costs of 8,700RMB per day, 261,000RMB per month or 3,132,000RMB per year
Also reduced pumping costs of excess water
Production Economics
MTEB is a major ingredient for the production of modern gasoline. Therefore optimizing the capacity of MTEB platform will increase total production of gasoline products.
South Plant
The South Plant chilled water is used to cool down process water for the gas refinery to increase production of LPG products such as propane and butane.
Fushun No.2 Wap-Flaro, picture illustrates 2 modules
| |
1992
Jan-Jul |
1993
Jan-Jul |
Total Difference |
C4 Oil Full
Production Capacity |
17622mt |
34029mt |
+93% |
Production Economics
In Fushun C4 compound products are used to make high value products such as ethylene and propylene.
Spot price for ethylene in the UK in today's market is $500p/t.
Increase in production by 78.13t/d x $500p/t = $39,064p/d. $1,171,920p/m or $14,063,040p/yr.
Please note some C4 compounds may be used for lower value products such as propane. It is all dependent on local circumstances.
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