Energy Efficient Processing of Waste

Discussion about utilization of waste for energy production (waste-to-energy, WTE) has moved on to next development phase. Waste fired power plants are discussed and researched. Present results of simulation prove that increase of net electrical efficiency above 20 % for units processing 100 kt/y is problematic and tightly bound with increased investments. Lower cogeneration production leads to ineffective utilization of energy, which is documented in present paper with help of primary energy savings criterion. Once sole electricity production is compelled by limited local heat demand, application of non-conventional arrangements is highly beneficial to secure effective energy utilization. In the paper a system where municipal solid waste incinerator is integrated with combined gas-steam cycle is evaluated in the same manner.