Energy extractor method of MFB System is not incineration, but pyrolysis method. The incineration method is used to district heating or electricity generation by waste heat recovery from burning waste.  But the pyrolysis method produce oil and gas by vacuum pyrolysis of ferment product.  The pyrolysis is different with incineration method in reduction oxygenator and prevention secondary pollutant. Also the gas conversion rate of carbon is 60% in incineration method, but the gas conversion rate of carbon is 99% in pyrolysis. It is eco friendly energy extraction system which is secured profitability.