Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are those in which

Tubes are laid vertically
Forced circulation takes place
Water passes through the tubes and flue gases around it
Flue gases pass through tubes and water around it

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Steam Boilers, Engines, Nozzles and Turbines
Coke is produced by

Heating wood in a limited supply of air at temperatures below 300°C
Enriching carbon in the coal
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Pulverizing coal in inert atmosphere

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