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Dr.
Gokhan Alptekin, Principal Investigator, galptekin@tda.com
Mr.
John D. Wright, Business Official, jdwright@tda.com
DOE
Grant No. DE-FG02-03ER83855
Amount:
$750,000
Gasification
technologies convert coal into synthesis gas feed streams that can be used in
power cycles for the high-efficiency generation of electricity. However,
the coal-derived synthesis gas contains a myriad of trace contaminants,
including mercury, which is designated as a hazardous pollutant that cannot be
released to the atmosphere. The
cost-effective removal of these contaminants is critical for the successful
utilization of coal as a feedstock in advanced power cycles.
This project will develop a sorbent-based system that can reduce the
concentration of a major coal pollutant, mercury, to less than parts-per-billion
levels in the coal-derived synthesis gas. Phase
I developed a low cost, high capacity sorbent that can remove mercury from
elevated temperature, coal-derived synthesis gas.
Also, the technical and economic feasibility of a process using this
sorbent, which dramatically reduces the cost of mercury removal, was
demonstrated. Phase II will design
and fabricate a prototype test unit to demonstrate the concept at a larger
scale. As a part of these
experiments, the effectiveness of the sorbent in the presence of other trace
impurities (e.g., H2S,
Commercial Applications and Other
Benefits
as described by awardee: The
sorbent-based system should provide cost effective contaminant removal, enabling
rapid and widespread implementation of gasification-based advanced power
systems.