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US 6,647,902 B1Granted
Process for incinerating waste products
AssigneeMartin GmbH fur Umwelt- und Energietechnik
InventorsJohannes Martin, Peter Spichal
Life of this patent
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Abstract
To improve slag quality, on a fired grate, at the end of the main combustion process, where burnable fractions are still present in addition to slag components which are already forming, the burnup rate or burnup intensity is changed by varying the primary air rate in sequential time sections, the time sections preferably being in a ratio of 1:1 and the reduced primary air rate being 50 to 70% of the standard primary air rate.
Claims15
A process for incinerating waste products on a grate comprising:
- drying the waste products;
- combusting the waste products in a main combustion process and forming a slag and burnable fractions;
- in a burnup stage at the end of the main combustion process where the burnable fractions are still present, introducing primary air at a variable rate in respective time sections of the burnup stage to retard the burnup rate or burnup intensity in selectable sequential time sections and increase the burnup rate or burnup intensity in intermediate time sections wherein(the primary air rate is varied by decreasing the primary air rate below a standard primary air rate and subsequently increasing the primary air rate to the standard primary air rate;
- and
- discharging the slag.
2 more elements
Dependencies are inferred from the claim text.