Coal suitable for chain grate boilers
Coal suitable for chain grate boilers
1. Class II bituminous coal: volatile matter ≥ 20%, heat generation>17.7-21 MJ/kg
2. Class III bituminous coal: volatile matter ≥ 20%, calorific value>21MJ/kg
3. Poor coal: Volatile content>10-20%, heat generation ≥ 17.7MJ/kg
4. Class III anthracite: Volatile content>6.5-10%, heat generation>21MJ/kg
5. Class II anthracite coal: Volatile content ＜ 6.5%, calorific value ＞ 21MJ/kg