BIOGAS APPARATUS WITH METERED MICROWAVE HEATING Russian patent published in 2013 - IPC C12M1/00 C12M1/02 

FIELD: chemistry.

SUBSTANCE: invention relates to biotechnology and bioenergy and can be used in recycling livestock wastes and for producing biogas. The biogas apparatus has a vessel for preparing starting material, a pipe for feeding the prepared mass, a pump for feeding material, a pipe for removing the obtained sludge, a vessel for spent substrate, a system for treating, collecting, storing and processing biogas and a bioreactor, having at least three cylindrical concentrically arranged vessels: an outer vessel for conducting a psychrophilic step of anaerobic fermentation of the biomass, a middle vessel for the mesophilic step of fermentation and a central vessel for the thermophilic step of fermentation. The outer and middle vessels are linked to each other in the bottom part, and the middle and central vessels are linked to each other in the top part. The apparatus if equipped with a microwave radiator with radiation frequency of 2450 MHz, placed in the central vessel of the bioreactor such that it enables metered and uniform heating of the biomass on its entire volume. A bladed mixer is installed in each of the outer and central vessels.

EFFECT: invention provides uniform heating on the entire volume of a bioreactor, high degree of decomposition of biological wastes and high output of biogas.

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