Method of increasing the level of volatiles in a pulverized coal mixture
AssigneeBabcock Lentjes Kraftwerstechnik GmbH
InventorsMichael Streffing, Alfons Leisse
Life of this patent
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Abstract
A method of burning coal with less than 10% volatiles in a burner supported by air. The coal is pulverized in a pulverizer and supplied to the burner mixed with a vehicle in the form of air. The object is more reliable ignition. The coal is separated from the air before it enters the burner and is combined into a new mixture with heated air. The second mixture is forwarded at a higher temperature and with a lower level of coal. The coal is separated from the second mixture and combined into a third mixture with heated air. The third mixture is forwarded at a higher temperature and with a higher level of coal.
Claims6
A method for burning coal with less than 10% volatiles in a burner supported by air, comprising the steps of:
- pulverizing coal in a pulverizer and supplying the pulverized coal to said burner and mixing with a vehicle in form of air in a first mixture;
- separating the coal from the air before the coal enters the burner and is combined into a second mixture with heated air;
- forwarding said second mixture at a higher temperature and with a lower level of coal;
- separating the coal from said second mixture and combining into a third mixture with heated air;
- and forwarding said third mixture at a higher temperature and with a higher level of coal.
Dependencies are inferred from the claim text.