Effect of -O- on Water Molecule Adsorption and Adsorption Mechanism of Lignite and Coke

Table 1

Proximate and elemental analysis results of raw coal.

Lignite (°C)	Proximate analysis (wt%)				Ultimate analysis (wt%, d)
	Mad	Ad		FCd	C	H	O	S	N
25	25.28	12.80	34.57	52.63	61.79	4.49	18.95	1.21	0.76
50	17.68	12.87	34.20	52.93	62.00	4.31	18.88	1.19	0.75
75	8.58	12.66	34.95	52.39	61.74	4.27	19.39	1.19	0.75
105	1.52	12.90	35.00	52.10	62.10	4.12	18.98	1.17	0.73
200	1.23	13.10	33.72	53.18	61.94	3.87	18.88	1.36	0.85
300	1.10	14.75	28.18	57.07	61.62	3.42	17.66	1.64	0.91
500	0.60	17.04	15.90	67.06	69.38	2.57	8.70	1.27	1.04
700	0.62	19.01	7.59	73.41	73.32	1.69	3.43	1.42	1.13
950	0.47	18.50	3.58	77.93	75.12	1.10	2.41	2.50	0.37

ad/d/daf: air-dried/dried/dried ash-free basis; A: ash content; V: volatile content; FC: fixed carbon; O: by difference.