FIELD: power engineering.
SUBSTANCE: vertical furnace of a steam-water heating boiler for transformation of loose fuel types into thermal energy, under action of gravity of those lowering from a hopper above into a fully filled furnace with a heat transfer volume made of gaps and channels of the boiler, and also contact zones formed by boiler elements and accumulators-conductors of high temperature installed in the furnace, zones are designed for fuel contact with only the necessary air for passage, stable mode of burning with pyrolysis or pyrolysis with burning of fuel having various moisture extent and heating power in the whole volume of the furnace, installed by closure or opening of a gate and a slide valve, with fire bars that are also accumulators-conductors of high temperature and distributors of only that air, which is required for burning of air that arrives from a sol chamber with an adjustment door via holes in fire bars to contact zones, besides, combustible pyrolysis gases are mixed with heated air supplied via accumulators-conductors and fire bars and are burned in contact zones, channels of boiler elements, smoke gases are exhausted via channels into boiler structures and gaps between the boiler and a water jacket into gas flue of fuel hopper and a flue funnel.
EFFECT: invention makes it possible to increase controlled capacity of the furnace with most complete processing of all heat-producing properties of materials used as fuel at certain dimensions of the device and to reduce emissions into the environment.
4 dwg
