“H” Paper Petrocoke Boiler Furnace Slagging Comparison

(CEC2571 TEST RESULT)

GE Water & Process Technologies Korea

Test Summary

• Fuel Type: Petro coke

• Test Period

- Before CEC2571: 30 days

- After CEC2571: 2011. 07.15~08. 09(25 days)

• TEST Result

- Before using CEC2571 (actually treated by other vendor’s MgO product), the slagging and fouling material nearly blocked the gas passages of tubes. Also, the slagging was so hard to remove during shutdowns.

- After using CEC2571, the slagging and fouling was significantly reduced. Also, the slagging was soft and easy to remove during a shutdown.

- The boiler system is operating for more than 10 months without plant shutdown.

Before/After Furnace Photo 1

Riser Tubes : No blockingRiser Tubes: Blocked by slagging

Before After

Middle Part: No blocking and cleanMiddle Part: Blocked by slagging

Before/After Furnace Photo 2

Before After

Upper part: Significantly reduced in slagging Upper part: Blocked by slagging

Before After

Before/After Furnace Photo 3

Bottom: Heavy slagging Bottom : Significantly reduced in slagging

Before After

Before/After Furnace Photo 4