GE P&W FuelSolv - Slag Control Treatment Program at EKPC Spurlock Station - Manual (Page 5)

Technical Paper Page 5
Daily Coal Samples were conducted to provide a
reference to coal and ash quality through the early
stages of the FMG2960 evaluation. The intention
was to compare coal quality to observed slagging
conditions in the treated boilers.
Results Summary
Unit 1 and 2 began evaluations of the FMG 2960 at
different points in 2010. Unit 2 began its slag con-
trol evaluation on January 29
th , while Unit 1 began
its slag control evaluation on April 19 th . The plan
with Unit 2 was to run 3 of 5 silos with 100% Coal-A
throughout the evaluation period. The plan with Unit
1 was to run 100% Coal-A during its evaluation pe-
riod. In the past, Spurlock Station was unable to run
either boiler with this fuel diet. In both cases, base-
line information from visual observations was estab-
lished.
Slag Ratings-Unit 1 operated at high slag ratings for
the period of approximately 3 months leading to the
start of the FMG2960 evaluation. Slag buildup in
trouble spots on Unit 1 decreased significantly as
indicated by the visual observations and the result-
ant slag ratings.
Figure 7 shows Unit 1 slag rating over time versus
coal burned. Coal-A and Coal-F are the highest
slagging index coals. Overall slag control improved
significantly with the addition of the FMG2960 slag
control program.
Unit 2 operated at very good levels of slag control
throughout the evaluation period. The feed of the
highest slagging index coal began following the
start of the FMG2960 slag control treatment pro-
gram.
The evaluation period on Unit 2 began on
1/29/2010 and ended on 5/9/2010. Throughout
this period plant operations experienced no ob-
served clinker formation on Planten SH and were
able to consistently control slag buildup at the hot
spot on the right side of the Front Pendant RH.
Unit 2 slag control was most effective when soot-
blowers IK#5 through IK#10 were deployed every
3 to 4 hours. However compressed air capacity
was a limiting factor at times, restricting soot-
blower availability.
Infrared Digital Photo- The ability to control slag
was evident when comparing observed conditions
prior to and during treatment with the FuelSolv
FMG2960 additive.