초록 ▼

A waste-to-energy plant which is designed and operated to burn municipal waste (in 2) combines a high pressure steam turbine/generator cycle and a combustion turbine/generator cycle, wherein the exit gas from the combustion turbine (6) is utilized to superheat (in 4) high pressure steam (from 2) pri

A waste-to-energy plant which is designed and operated to burn municipal waste (in 2) combines a high pressure steam turbine/generator cycle and a combustion turbine/generator cycle, wherein the exit gas from the combustion turbine (6) is utilized to superheat (in 4) high pressure steam (from 2) prior to entering the steam turbine (8). The combination of the combustion turbine/generator cycle with the steam turbine/generator cycle enables operation of the waste-to-energy plant at high pressure and high temperature resulting in greatly increased thermal cycle efficiency while eliminating superheater surfaces from the waste heat recovery boiler, thereby greatly reducing corrosion problems associated with waste heat recovery boilers.

대표청구항 ▼

A method of efficiently operating a waste to energy facility in a manner which reduces boiler plant corrosion comprising: a) utilizing waste combustion gas, generated from the burning of municipal, commercial or industrial waste, to generate saturated steam having a pressure of at least 1000 psia in

A method of efficiently operating a waste to energy facility in a manner which reduces boiler plant corrosion comprising: a) utilizing waste combustion gas, generated from the burning of municipal, commercial or industrial waste, to generate saturated steam having a pressure of at least 1000 psia in a waste heat recovery boiler; b) flowing said saturated steam having a pressure of at least 1000 psia through one side of a steam superheater having at least two sides; c) combusting fuel to generate fuel combustion gas; d) flowing the fuel combustion gas through a combustion turbine which converts the gas into combustion turbine exhaust gas; e) flowing all of said combustion turbine exhaust gas through another side of said steam superheater, wherein said combustion turbine exhaust gas provides heat to superheat said steam having a pressure of at least 1000 psia; f) flowing the superheated steam through a steam turbine; and g) flowing all of said combustion turbine exhaust gas exiting the steam superheater through a combustion turbine exhaust gas heat recovery unit.