Integrated Gasification Combined Cycle GE IGCC ... - apec egcfe
Integrated Gasification Combined Cycle GE IGCC ... - apec egcfe
Integrated Gasification Combined Cycle GE IGCC ... - apec egcfe
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Pollution Prevention Avoid Negative Collateral Effects<br />
Pollutant<br />
NOx<br />
SOx<br />
Part.<br />
Matter<br />
Mercury<br />
SCR<br />
Limestone Wet Flue<br />
Gas Desulfurization<br />
Baghouse or ESP<br />
a)<br />
Conventional<br />
Combustion<br />
Approach<br />
Activated Carbon<br />
Injection<br />
b)<br />
Additives to Wet<br />
Flue Gas Scrubber<br />
Associated Environmental<br />
Impact<br />
- Ammonia Slip<br />
- Acid plume<br />
- Ammonia-sulfur salt fume as PM<br />
-Spent catalyst disposal<br />
- Contaminated fly ash<br />
- More solid waste (5x fuel sulfur)<br />
- Liberation of CO 2 from limestone<br />
- Additional PM from mist carryover<br />
- Additional water treatment<br />
- Potential for ash contamination with<br />
ammonia from SCR and Hg from<br />
carbon injection<br />
-Poor carbon utilization increases<br />
waste disposal<br />
- Flyash unacceptable for commercial<br />
use or may be deemed hazardous<br />
- Contamination of scrubber sludge<br />
- Unacceptable for commercial use.<br />
<strong>IGCC</strong><br />
Approach<br />
Low NOx<br />
Combustion<br />
Syngas<br />
Scrubbing<br />
Vitrified Slag<br />
Fixed Carbon<br />
Bed in Fuel<br />
Stream<br />
Associated<br />
Environmental Impact<br />
- None -<br />
- None -<br />
Production of merchant<br />
sulfur or sulfuric acid.<br />
- None –<br />
Vitrified Matrix Passes<br />
TCLP<br />
- Minor -<br />
Disposal of activated<br />
Carbon with elemental Hg
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