초록 ▼

A combined cycle waste-to-energy plant is utilized to thermally convert municipal and industrial solid wastes into essentially complete products of combustion and use the combustion heat to produce steam and/or electrical power. The plant includes a building enclosure having a waste receiving area,

A combined cycle waste-to-energy plant is utilized to thermally convert municipal and industrial solid wastes into essentially complete products of combustion and use the combustion heat to produce steam and/or electrical power. The plant includes a building enclosure having a waste receiving area, a waste fuel separation and processing area, an incinerator area and a heat recovery and power generation area. Processed waste fuel is delivered to a series of incinerators by an automated conveyor and hopper system, and the waste fuel is burned in the incinerators by hot exhaust gas delivered thereto from one or more combustion turbines located outside the building and drivingly connected to electrical generators. Inlet air to the turbines is drawn from with the building to maintain its interior at a negative pressure, thereby preventing waste odors and pathogens from escaping from the building. Hot combustion turbine exhaust gas delivered to the incinerators is passed through a superheater, and a portion of the exhaust gas exiting the superheater is passed through a waste heat recovery boiler. Hot combustion gas discharged from each of the incinerators is passed through an associated combusion heat recovery boiler. Gas heat recovered in the superheater and the various boilers is utilized to produce steam which operates a steam turbine drivingly connected to an electrical generator. A portion of the steam generated may also be used for process purposes.

대표청구항 ▼

A solid waste-to-energy conversion plant comprising: a building enclosure having a receiving area for receiving and storing solid waste, a waste fuel processing area, a waste incineration area, and a waste combustion heat recovery area; incinerator means, positioned in said waste incineration area,

A solid waste-to-energy conversion plant comprising: a building enclosure having a receiving area for receiving and storing solid waste, a waste fuel processing area, a waste incineration area, and a waste combustion heat recovery area; incinerator means, positioned in said waste incineration area, for receiving refuse derived fuel, and for receiving hot exhaust gas from a source thereof, utilizing the received hot exhaust gas to support combustion of the received refuse derived fuel, and responsively generating hot combustion gases; fuel processing means, positioned in said waste fuel processing area, for converting solid waste received in said receiving area to refuse derived fuel; conveying means for conveying refuse derived fuel from said waste fuel processing area to said incinerator means; incinerator heat recovery boiler means, positioned in said waste combustion heat recovery area, for receiving said hot combustion gases from said incinerator means and water from a source thereof and utilizing the hot combustion gases to convert the water to saturated steam; waste heat recovery boiler means for receiving hot exhaust gas and utilizing the same to convert water received by said waste heat recovery boiler means to saturated steam; steam superheater means for receiving hot exhaust gas, and saturated steam from said incinerator heat recovery boiler means and said waste heat recovery boiler means, and responsively generating superheated steam; steam turbine and generator means for receiving said superheated steam and responsively generating electrical power and discharging saturated steam; condensate/feedwater means for receiving saturated steam from said steam turbine and generator means and responsively flowing condensed water to said incinerator heat recovery boiler means and said waste heat recovery boiler means; and combustion turbine and generator means for drawing air from the interior of said building enclosure in a manner maintaining it at a negative pressure, mixing the air with fuel from a source thereof, burning the air-fuel mixture, and responsively generating electrical power and flowing hot exhaust gas through said steam superheater means and into said incinerator means and said waste heat recovery boiler means.