Lignite Upgrading Cat-HTR Process Micronised Coal
Micronised Coal
IER's Micronised Coal
Independent analysis has found IER's micronised coal to be at least comparable to medium-volatility pulverised coal injection (or ‘PCI’) coal. See the table below for a comparison of 2 samples of IER's micronised coal with a typical Queensland PCI-type coal. The coal can, therefore, theoretically be used as a reductant in the production of steel. The coal can also be used to generate electricity; the emissions from lignite-fired power plants can be reduced if IER's coal replaces lignite as a feedstock.
Coal Quality Comparison
| Basis | Sample 1 | Sample 2 | Qld PCI Coal3 | |
|---|---|---|---|---|
| Gross Calorific Value (kcal/kg) | ar1 | 7,810 | 7,476 | 6,977 |
| Gross Calorific Value (kcal/kg) | ad2 | 7,937 | 7,615 | 7,583 |
| Total Moisture (%) | ar1 | 1.6 | 1.8 | 8.0 |
| Ash (%) | ad2 | 2.6 | 6.3 | 9.5 |
| Carbon (%) | ad2 | 84.5 | 80.1 | 81.1 |
| Volatile Matter (%) | ad2 | 20.5 | 22.1 | 14.5 |
| Sulphur (%) | ad2 | 0.10 | 0.23 | 0.65 |
1. as received, 2. air dried, 3. typical Queensland PCI-type coal
Power Plant Emissions Reduction
By using IER's micronised coal, it is possible to reduce CO2 emissions from brown‐coal‐fired power stations. Using various assuptions, IER has calculated that it is possible to achieve a gross CO2 reduction of around 50% for an existing brown‐coal‐fired boiler, if the boiler is upgraded to an ultra super critical boiler and it uses IER's micronised coal instead of lignite.