Installation, useful to produce electrical and thermal energies from biomass, includes furnace to combust biomass emitting fumes to vaporize fluid whose vapors drive turbine to produce electricity, where fluid operates under Rankine cycle

摘要

The cogeneration installation comprises a furnace for the combustion of biomass that emits fumes to vaporize an organic fluid whose vapors drive a turbine to produce electricity, and a vapor condenser placed at an outlet of the turbine. The organic fluid operates according to a Rankine cycle at a hot source temperature of greater than 300[deg] C, is vaporized in a first exchanger (5), and has a temperature of 270[deg] C at the inlet of the turbine and a pressure of 15 bars. The combustion furnace is a sludge incinerator (3) for water treatment. The sludge incinerator is a hot wind box incinerator. The cogeneration installation comprises a furnace for the combustion of biomass that emits fumes to vaporize an organic fluid whose vapors drive a turbine to produce electricity, and a vapor condenser placed at an outlet of the turbine. The organic fluid operates according to a Rankine cycle at a hot source temperature of greater than 300[deg] C, is vaporized in a first exchanger (5), and has a temperature of 270[deg] C at the inlet of the turbine and a pressure of 15 bars. The combustion furnace is a sludge incinerator (3) for water treatment. The sludge incinerator is a hot wind box incinerator. The first exchanger is crossed by the fumes of the incinerator and by a heat-transfer fluid that is heated by the fumes in a second heat exchanger. Cold fluid obtained from the condenser is constituted by cooling water having a temperature of 85-95[deg] C. Recovered energy, during the condensation of the fluid at the outlet of the condenser, is sent to sludge drier.