Fuels and Combustion
Compound coke ovens are those which can be heated by

Lean gas (e.g., B.F. gas)
Rich gas (e.g., coke oven gas)
Both B and C
Both steam and electrical power

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Fuels and Combustion
Cannel coal

All of these
Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
Has a high volatile matter content and burns with a luminous smoky flame
Is non-coking

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