Manure digester and power generating system

Internal-combustion engines – Combined devices – Generating plants

Patent

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Details

48111, 210170, 210180, 210232, 2102571, 2105322, 435167, 435316, F02B 4308, F02M 2102, C12M 102

Patent

active

047504544

ABSTRACT:
A manure digester and power generating system includes a mixing tank for receiving manure, a closed, anaerobic manure digester tank of fixed volume, and a gas-fueled engine and a generator coupled to the engine, for generating electrical power. Manure is scraped into the mixing tank daily, where it is mixed with water to produce a manure slurry of desired consistency, and heated to a prescribed temperature. The digester tank is of fixed volume and may be of a generally rounded cross-sectional shape and elongated in length, and into its inflow end the contents of the mixing tank are transferred daily, on a daily batch basis. Anaerobic-digesting microbes are maintained in the digester tank to digest the manure slurry and produce methane gas and by-products. Temperature in the digester tank is maintained at about 90.degree. to 100.degree. F. Effluent by-products are discharged out the outflow end of the digester tank, and methane gas is drawn off the digester tank and fed to the gas-fueled engine, the exhaust heat from which preferably is used to heat the slurry in the mixing tank.

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