RECYCLING CARBON DIOXIDE POWER PLANT FOR INSTALLATION OF COMBINED CYCLE Russian patent published in 2021 - IPC F01K25/10 

FIELD: power engineering.

SUBSTANCE: invention relates to the field of power engineering. Recycling carbon dioxide power plant for installation of combined cycle comprises heat recovery boiler consisting of main and bypass heaters of carbon dioxide of high pressure (CO₂ hp), located in recovery boiler in said sequence along flue gases, high temperature recuperator outlet communicated by the heated CO₂ hp with an inlet of main heater CO₂ hp, also comprises at least one low-temperature recuperator communicated at the heated CO₂ hp output to the high-temperature recuperator inlet by heated CO₂ hp, at inlet of low-pressure heating carbon dioxide (CO₂ lp) with high-temperature recuperator output by CO₂ lp, high-temperature turbine provided by the inlet for the working fluid (CO₂ hp) with a output of the main heater CO₂ hp, at output for working medium (CO₂ lp) - with input of high-temperature recuperator by CO₂ lp, low-temperature turbine communicated at the outlet for the working medium to the low-temperature recuperator inlet by CO₂ lp, low-pressure carbon dioxide cooler communicated at CO₂ lp inlet with low-temperature recuperator output by CO₂ lp, and a supercharger communicated at CO₂ lp inlet with carbon dioxide of low pressure CO₂ lp coolant output, at output CO₂ hp with inputs of CO₂ hp of bypass heater and low-temperature recuperator. Bypass heater at CO₂ hp outlet is communicated with low-temperature turbine inlet at CO₂ hp inlet.

EFFECT: invention allows increasing efficiency of combined cycle plants with gas turbine engine with power not higher than 50-60 MW.

1 cl, 1 dwg