METHOD OF PRODUCING ELECTRICITY FROM SUBSTANDARD (WET) FUEL BIOMASS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC F23G5/04 F23K1/04 F01K17/04 

FIELD: electricity.

SUBSTANCE: method involves the production of electricity in a two-stage process scheme with the gasification of raw materials in a gasification reactor of the direct steam-air gasification process in a dense layer, in particular a cylindrical inclined rotary gasification reactor in the filtration combustion mode with superadiabatic heating, followed by direct combustion of the resulting hot fuel gas and conversion of the thermal energy of the resulting steam into electricity through a thermal (steam) machine and an electric generator. The invention provides for the recovery of the "waste" heat of the exhaust steam by condensing it in a closed loop of the working fluid (water/organic coolant) of the thermal (steam) machine through the two-stage air cooling scheme, including a continuous interstage combined convective air-heater and conductive (contact) drying of the initial raw materials in the condensation-drying unit, the air used in the required volume is supplied to the gasification reactor as a gasifying agent. The embodiment of the invention is assumed by introducing a condensation drying unit in the device connected to the output of a thermal (steam) machine for exhaust steam and constructively representing the two-stage air condenser of steam comprising a steam pipeline in the form of series-connected units - a module of the 1st stage of condensation, a steam and condensate drain with the integrated (built-in) rotating drying drum, a module of the 2nd stage of condensation. It is proposed to use different types of thermal (steam) machines - a steam turbine, a steam screw machine, a steam piston engine, an organic cycle turbine.

EFFECT: invention allows to increase the electrical efficiency and expand the range of cheap low-grade raw materials used in terms of substandard, including moisture content, fuel biomass, including utilized substandard solid municipal waste, while minimizing the harmful impact on the environment and ensuring the autonomy of the power generation process.

10 cl, 9 dwg, 1 tbl