Fuels and Combustion
Calorific value of

Light paraffinic fuel oils is lower than that of equivalent olefins
Light paraffinic fuel oils is equal to that of equivalent olefins
N-paraffin is lower than that of iso-paraffins of the same compounds
Light paraffinic fuel oils is higher than that of equivalent olefins

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Fuels and Combustion
Producer gas containing least amount of tar is produced by the

Partial combustion of large size (< 50 mm) coke
High pressure gasification of coal (e.g. in Lurgi gasifier)
Partial combustion of coal
Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier)

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