Which is not correct statement about effect of sulphur in fuel ___________________?

Steam Boilers, Engines, Nozzles and Turbines 14/12/2021

A. it has heating value
B. it helps in electrostatic precipitation of ash in flue-gases
C. it leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
D. it erodes furnace walls
E. none of the above

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