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  Case Study / Oil Refinery Application  
 

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 -5c in winter and 24c 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.

 
Fig. 2 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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