PLANT FOR OBTAINING BIOGAS, ELECTRIC AND HEAT ENERGY AND FERTILISERS FROM AGRICULTURAL WASTES Russian patent published in 2012 - IPC C02F11/04 

FIELD: power industry.

SUBSTANCE: plant includes the following equipment in-series installed and connected by means of pipelines: raw plant waste crusher connected to waste receivers, the outlet of which is connected via pipeline to inlet of the first centrifugal or screw pump for substrate pumping; pump outlet is connected via pipeline to inlet of reactor of preliminary acid fermentation, the outlet of which is connected via pipeline to inlet of the second centrifugal or screw pump for substrate pumping, the outlet of which is connected via pipeline to inlet of the main reactor - methane tank; at that, gas outlet of reactor -methane tank is connected to inlet of biogas compressing compressor the outlet of which is connected to high pressure gas holder inlet, and high pressure gas holder outlet is connected through cyclone and biogas cleaning system to catalytic biogas converter the outlet of which is connected to inlet of battery of solid oxide fuel cells; at that, catalytic biogas converter and battery of solid oxide fuel cells are contained in temperature-controlled chamber; at that, battery of solid oxide fuel cells is electrically connected to battery of accumulators and inverter; besides, outlet for warmed-up gases of battery of solid oxide fuel cells is connected via heat pipeline to inlet of heat recuperation system the outlet of which is connected to submersible heat exchanger located in reactor of preliminary acid fermentation, which is in-series connected to submersible heat exchanger in the main reactor - methane tank.

EFFECT: utilisation of agricultural wastes, obtaining of biogas, generation of electric and thermal power, and obtaining of useful biofertiliser.

1 dwg