Characteristics of Corrosion Related to Ash Deposition on Boiler Heating Surface during Cofiring of Coal and Biomass

Table 1

Proximate and ultimate analysis of fuels (air-dried) (%).

Fuel	Sample number	Proximate analysis				Ultimate analysis
		Mad	Aad	Vad	FCad	Cad	Oad	Had	Nad	Sad	Clad
Straw	B1	8.22	7.05	65.62	19.11	40.87	37.22	5.71	0.78	0.15	0.31
Corn stalk	B2	7.96	8.32	65.46	18.26	40.51	36.58	5.83	0.67	0.13	0.065
Cotton stalk	B3	5.67	4.23	69.74	21.38	44.26	38.94	6.32	0.50	0.08	0.074
Bitumite	C1	4.35	20.69	35.18	39.79	61.02	7.54	4.01	1.18	1.21	–
Lean coal	C2	1.30	34.94	10.15	53.62	55.27	3.27	2.96	0.61	1.65	–