| abstract |
The utility model discloses a super supercritical carbon dioxide brayton cycle coal -fired generating unit, this system are closed indirect heating's super supercritical carbon dioxide power generation system, including main compressor, low pressure turbine, generator, precooler, low temperature regenerator, high temperature regenerator, boiler, high -pressure turbine, recompression machine and blender. Wherein the boiler includes main working medium radiant heating surface, hot working medium radiant heating surface, high temperature over heater, high -temperature reheater, low -temperature reheater, low temperature superheater, intermediate preheating ware and air heater more again. The utility model discloses a behind the low -temperature reheater of boiler afterbody flue, low temperature superheater, arrange the intermediate preheating ware before the air heater, after to the blender, high temperature regenerator cold side goes into when preoral working medium preheats, the effectual waste heat that utilizes boiler afterbody flue has reduced boiler exhaust gas temperature, has promoted boiler efficiency and entire system's generating efficiency. |