Table 3 Proximate and ultimate analysis values of coal sample.

From: Effects of water injection on reaction temperature and hydrogen production in horizontal co-axial underground coal gasification

Calorific value (MJ/kg)

Proximate analysis (wt%)

Ultimate analysis (wt%)

Air drying basis

Air drying basis

Air drying basis

Moisture

Ash

Volatiles

Fixed

carbon

C

H

N

O

24.4

4.2

22.2

34.0

39.6

61.5

4.46

1.28

9.54

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