Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is a

Multi-tubular, horizontal, internally fired and mobile boiler
Single tube, horizontal, internally fired and stationary boiler
Multi-tubular, horizontal, externally fired and stationary boiler
Single tube, vertical, externally fired and stationary boiler

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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
Pulverizing coal in inert atmosphere
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

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