US 12,188,656 B2
Correlation deriving method and correlation deriving device
Hirotaka Kawabe, Tokyo (JP); Kenjiro Chie, Tokyo (JP); and Junichi Shigeta, Tokyo (JP)
Assigned to IHI Corporation, Tokyo (JP); and IHI INSPECTION AND INSTRUMENTATION CO., LTD., Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP); and IHI INSPECTION AND INSTRUMENTATION CO., LTD., Tokyo (JP)
Filed on Aug. 1, 2022, as Appl. No. 17/816,445.
Application 17/816,445 is a continuation of application No. PCT/JP2020/008712, filed on Mar. 2, 2020.
Prior Publication US 2022/0364722 A1, Nov. 17, 2022
Int. Cl. F28F 19/00 (2006.01); F22B 37/38 (2006.01); F23N 5/02 (2006.01); F23N 5/26 (2006.01)
CPC F22B 37/38 (2013.01) [F23N 5/022 (2013.01); F23N 5/265 (2013.01); F23N 2225/21 (2020.01); F23N 2239/02 (2020.01)] 2 Claims
OG exemplary drawing
 
1. A correlation deriving method, comprising the steps of:
generating coal ash by incinerating coal;
generating sintered ash by heating the coal ash at a predetermined heating temperature within a range of a combustion temperature of a coal burning boiler;
measuring hardness of the sintered ash;
measuring an exhaust gas temperature exhibited when coal which is to have the hardness is burnt in the coal burning boiler; and
deriving a correlation between the hardness and the exhaust gas temperature.