Biogas production on industrial sewer basis (original) (raw)

On the basis of nkana water and sewerage treatment plant (NWSC), 2.94 kg/s (75%CH4 + 25%CO2) upgraded bio methane can be produced from the 30 designed bio digesters connected in series and the scrubbing unit. In this report, a thermodynamic modeling of an integrated biogas power generation system for electricity generation is reported. This system involves a gas turbine cycle and organic Rankine cycle (ORC) where the wasted heat of gas turbine cycle is recovered by closed ORC. The net output power of the power generation system is fixed at 11249.51 KW includes 6508.43 KW power generated by GT and 4741.08KW by ORC. The design parameters of a bio methane power plant are compressor isentropic efficiency, compressor pressure ratio , gas turbine isentropic efficiency , the inlet temperature of the combustion chamber and gas turbine inlet temperature, steam turbine inlet pressure (TIP), and condenser pressure. The report also covers for the design of Bio-digester, cleaning unit, combustion chamber and selection of a suitable compressor, evaporator, gas turbine, steam generator, condenser and a pump