PULVERIZED FUEL SUPPLY METHOD FOR OXYFUEL COMBUSTION BOILER, AND OXYFUEL COMBUSTION BOILER SYSTEM

摘要

In an oxyfuel combustion boiler system, nitrogen gas4 separated by an air separation unit (ASU) 1 is suppliedas carrier gas to a pulverizer 5 for drying andpulverization of fuel 6. A fluid mixture 22 of thenitrogen gas 4 from the pulverizer 5 with pulverized fuel21 is supplied to a powder separation device 24 where thepulverized fuel 21 is separated. The separated pulverizedfuel 21 is mixed with the primary recirculated flue gas 16and supplied to a burner 8.