Title :
Supercritical once-through boiler water-coal ratio modelling and character study
Author :
Tao Liu ; Jizhen Liu ; Heng Zhang ; You Lv
Author_Institution :
State Key Lab. for Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Beijing, China
Abstract :
The supercritical once-through boiler is a complex system with the characteristics of strong coupling, non-linearity and multiple parameters. Quick and accurate acquisition of its water-coal ratio is the guarantee of the boiler´s safe, economic and stable operation. The turbine heat rate calculation method based on unit operation data was introduced in this paper. Then by the matter and energy conservation, the water-coal ratio calculation model was derived from the relation between water-coal ratio and heat rate. Finally, taking a certain 600MW coal-fired unit as example, the water-coal ratio under rated conditions were calculated by the put forward model. The result is indicated that the model is efficiency and reasonable from theoretical analysis and practical application. The obtained water-coal ratio character is of great significance for supercritical once-through boiler control improvement.
Keywords :
boilers; coal; energy conservation; gas turbines; large-scale systems; coal-fired unit; complex system; economic operation; energy conservation; power 600 MW; safe operation; stable operation; supercritical once-through boiler; turbine heat rate calculation; unit operation data; water-coal ratio; Boilers; Coal; Feeds; Turbines; Water conservation; Water heating; Character study; Heat rate; Supercritical once-through boiler; Water-coal ratio;
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7161661
