| 摘要 |
FIELD: power engineering.SUBSTANCE: waste incineration furnace with a fluidised bed for a bottom sediment, comprising a body of a waste incineration furnace, where the bottom sediment is supplied without drying, besides, the inner space of the body of the waste incineration furnace is divided into a lower part, a part above the lower part and an upper part, in direction along the height. The lower part serves as a pyrolysis zone for thermal decomposition of the bottom sediment, at the same time supplying air for fluidisation, having an air excess ratio of 1.1 or below, together with fuel for burning of fuel, for fluidisation of the bottom sediment. The part above the lower part serves as a burning zone above the layer for supplying only secondary combustible air, having an air excess ratio from 0.1 to 0.3, for formation of the local area with high temperature for decomposition of NO. The upper part serves as a zone of full combustion for full combustion of non-burnt content; besides, the air excess ratio in the pyrolysis zone is established as equal to 0.7 - 1.1. Temperature of the pyrolysis zone is established as equal to 550 - 750°C. The temperature of the combustion zone above the layer is established as equal to 850 - 1000°C. The total coefficient of air excess for primary air supplied as air for fluidisation and secondary air supplied into the zone of combustion above the layer is established as equal to 1.0 - 1.3. Also the versions are described for the method to burn the bottom sediment in the furnace.EFFECT: energy saving.5 cl, 2 tbl, 2 dwg |
