Blank pet' coke

1
The Study of SOx Reduction by K2CO3 in Petroleum
Coke Combustion Burner Dynamics Group, Thomas
H. Fletcher, Ash Deposition Group
ACERC Brigham Young University Provo, UT, 84602
Sponsor Plasmatek, Inc
Introduction
Results
High sulfur content is one of the main factors
preventing pet. Coke from being widely used in
industry. It was considered to add potassium
carbonate (K2CO3) to the petroleum coke so that
the potassium reacts with the sulfur dioxide to
form potassium sulfate (K2SO4)
SEM X-ray Spectra
Blank pet. coke
Task
SO2/NOx experiment data
SEM quantification
Perform form combustion tests to determine the
amount of SO2 reduction from burning petroleum
coke/K2CO3 mixtures in near-stoichiometric
amounts of air.
Blank pet. Coke/air
Ash of pet. Coke/K2CO3bruned in air
Experiment Systems
Burner Flow Reactor
Multi-fuel Reactor
Ash of Pet. Coke/K2CO3 burned in O2
Pet.coke/K2CO3/air
Pet.coke/K2CO3/O2
Experiment Conditions
Conclusion
Samples of the parent petroleum coke and the ash
collected from the combustion tests were analyzed
for elemental composition using the X-Ray
associated with the scanning electron microscope
(SEM). Although SEM is not always as
quantitative as we would like, it yield
meaningful results. These results confirm that
the sulfur is being concentrated in the ash, in
conjunction with the potassium. The nickel seems
to be concentrated in the ash as well, but the
vanadium concentration did not increase
significantly. This may indicate some
vaporization of the vanadium, or may be due to
the inaccuracy of the measurement. This
technique also seemed to indicate a substantial
amount of copper. The source of the copper is
not known, and may indicate contamination from
the sampling system or SEM sample preparation
system.