US 12,338,991 B2
Oxy-PFBC temperature management through staged gas injection and gas velocity management
William W. Follett, IV, Calabasas, CA (US); and Douglas M. Heim, Woodland Hillis, CA (US)
Assigned to GAS TECHNOLOGY INSTITUTE, Des Plaines, IL (US)
Filed by GAS TECHNOLOGY INSTITUTE, Des Plaines, IL (US)
Filed on May 3, 2022, as Appl. No. 17/735,252.
Claims priority of provisional application 63/183,261, filed on May 3, 2021.
Prior Publication US 2022/0349571 A1, Nov. 3, 2022
Int. Cl. F23C 10/16 (2006.01); F23C 9/08 (2006.01); F23L 7/00 (2006.01); F23L 15/00 (2006.01); F23N 1/02 (2006.01); F22B 15/00 (2006.01)
CPC F23C 10/16 (2013.01) [F23C 9/08 (2013.01); F23L 7/00 (2013.01); F23L 15/00 (2013.01); F23N 1/02 (2013.01); F22B 15/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a pressurized fluidized bed combustor (PFBC) with a multi-stage heat exchanger, the method comprising:
adjusting a quantity and temperature of diluent injected with an oxidizer into the PFBC, wherein the adjusting the quantity and temperature of the diluent injected comprises a multi-stage diluent injection;
injecting a first diluent injection upstream of a first heat exchanger; and
injecting a second diluent injection downstream of the first heat exchanger.