MODULAR THERMAL POWER STATION ON WOOD FUEL GRANULES Russian patent published in 2011 - IPC F23B50/06 F23B50/12 F23G5/27 F23G5/46 F23G7/10 F23L15/04 F23B10/02 

FIELD: power industry.

SUBSTANCE: modular thermal power station on wood fuel granules includes supply mechanism of wood fuel granules (5a), combustion chamber, ash removal device and Stirling engine (22), recuperator (11) of waste gas for pre-heating of air for combustion (10); at that, wood fuel granules are gasified with some portion of this hot air (13); at that, some portion (13) of hot combustion air (10) is directed from above grate (4) to gasification combustion chamber (3a) and thus, combustible gas (18) together with ash is ingested with pressure blower (7) of side channel through grate (4) downwards; at that, combustible gas (18) under grate (4) is mixed with pulse of flow of the rest portion (14) of hot combustion air (10) so that low lambda value is kept near limitation as to CO, and combustion in central nozzle (19) is stabilised depending on temperature in combustion chamber (3b), or flameless combustion state is set with increasing temperature in combustion chamber (3b); at that, in combustion chamber (3b) the potential vortex appears (20), which intensively mixes waste gas (6), combustible gas (18) and hot combustion air (14) so that combustible gas (18) and ash particles are completely combusted. Ash together with waste gas (6) is drawn through recuperator (11) of waste gas and heat exchanger (24) connected after it with temperature of waste gases below due point; at that, such high flow velocity is maintained so that ash particles cannot deposit on heat exchanger walls; ash particles in heat exchanger (24) with temperature of waste gases below due point are mixed with water vapour condensate appearing there; at that, soluble components are dissolved in water vapour condensate, and non-soluble component parts are washed away or entrapped with water vapour condensate and waste gas flow (6), and even small particles are washed away by means of internal mixing of waste gas (6), ash particles and water vapour condensate from waste gas (6). Waste gas - water vapour condensate - ash mixture is separated before and after pressure blower (7) of side channel in separator (27) of waste gas and condensate of water vapour, for example in cyclone.

EFFECT: higher efficiency of the plant.

6 cl, 8 dwg