| 摘要 |
For the incineration of very moist, in particular vegetable waste fuels in a vertical combustion space with an underfeed stoker without vapour and smoke formation and with, still in the furnace, preseparation of fly ash with low force expenditure, waste fuels are according to the method supplied to the combustion space in the direction of the arrow (G) through a supply pipe piece (3), there being formed above a stepped grate (8) a conical heap (9) with a zone (A) of fresh fuel, a drying and a degassing zone (B), a smouldering-fire zone (C), a glowing zone (D) and an ash zone (H). The low temperature carbonisation gases escaping from the degassing zone (B), the smouldering-fire zone (C) and the glowing zone (D) are swirled by the secondary air which is introduced, from the secondary air nozzles (F) in the casing (2) of the combustion space (1), in the direction of the arrows tangentially against the surface of the conical heap (9) at half the conical-heap height (H/2), ignited, and, after burning off, leave the combustion space (1) after participating in the superposed cyclone flow upwards smoke-free and precleaned of fly ash. Fresh air is supplied to the grate (8) from underneath in the direction of the arrow (E). <IMAGE>
|
