Coal Gasification Processes and Products from
DuPont Clean Technologies
Coal Gasification Processes and Products
Integrated Gasification Combined Cycle, or IGCC, is a technology that turns coal into gas - synthesis gas (syngas). It then removes impurities from the coal gas before it is combusted. This results in lower emissions of sulfur dioxide, particulates and mercury. It also results in improved efficiency compared to conventional pulverized coal.
flow diagram of an IGCC plant
The gasification process can produce syngas from high-sulfur coal, heavy petroleum residues and biomass. Integrated Gasification Combined Cycle (IGCC) processes have special needs which can be met with MECS® processes and products.
IGCC Emissions Reductions
MECS® ® wet gas scrubbing is selected for IGCC Emissions Reduction applications due to the flexibility of its wet gas scrubbing technology when removing sulfur. ® technology can be designed to handle start-up, shutdown, and normal inlet gas variations such as flow rate and sulfur content.
Advantages of the® technology in IGCC SO2 removal applications are:
- excellent turndown
- ability to handle very high SO2 inlet loading,
- high on-line availability
- small footprint
IGCC Energy Recovery
IGCC affords many opportunities for energy savings. MECS®-ThermoZ gas to gas heat exchangers used as combustion air preheaters provide an excellent means of recovering heat that would otherwise be lost to ambient surroundings.
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