Coal fired power generation system and supercritical CO2 cycle system thereof

US11306622B2 · kind B2 · utility

Assignee

• NORTH CHINA ELECTRICAL POWER UNIVERSITY · CN

Inventors

• Jinliang Xu · Hunan, CN
• Enhui SUN · Beijing, CN
• Jian XIE · Kunming, CN
• Chao Liu · Beijing, CN
• Hangning Li · Beijing, CN
• Huan Liu · Nanjing, CN
• Guanglin Liu · Beijing, CN

Key dates

• Filing date: Sep 30, 2020
• Grant date: Apr 19, 2022
• Expiry date: Oct 22, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2220/31
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A coal-fired power generation system and a supercritical CO2 cycle system thereof are provided. The supercritical CO2 cycle system includes a compressor unit and a turbine unit. The turbine unit includes a preceding stage heater, a preceding stage turbine, a last stage heater and a last stage turbine successively connected in series. An exhaust port of at least one of compressors in the compressor unit is in communication with the turbine unit through a split flow pipe, and a communication position between the split flow pipe and the turbine unit is located downstream of a suction port of the preceding stage turbine. An auxiliary regenerator and an auxiliary heater are provided at the split flow pipe, and the auxiliary regenerator is located upstream of the auxiliary heater.