Steam Boilers, Engines, Nozzles and Turbines
The proximate analysis of fuel lists

Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash
Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about effect of sulphur in fuel?

It helps in electrostatic precipitation of ash in flue gases
It has heating value
It erodes furnace walls
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low

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