New Process Takes Energy From Coal Without Burning It

They just burn it with pure oxygen instead of with air. The innovation, and it is an innovation IMHO, is that they used iron to capture and transfer the oxygen. This prevents the forming of NOx, which is a good thing.
This means they can burn the coal hotter without emitting dangerous amounts of NOx.
1. They let iron pellets rust. Or they buy rust in the first place.
2. They put the rust pellets into the chamber with coal dust.
3. They ignite the mixture (this requires a bit more heat than usual burning. At least 1566 ?C or 2850.8 F)
4. The coal dust pulls the oxygen out of the rust and binds it with the carbon into quite pure CO2.
5. Heat (a lot of it)
6. Use the heat in a default thermoelectric power plant.
7. The pellets can rust again, to capture oxygen.
8....
9. Profit.

If they would combine it with an iron smelting plant then the energy required in step 4 to pull the oxygen out of the rust would not be wasted. Then the iron pellets are one of the end results. Of course, then you'd have to emit step 7.

To me this seems familiar. If I am correct this is the way Thermite works, just with aluminium powder instead of coal dust.

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/feibLZvQ4AQ/story01.htm

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