Abstract: Abstract:Aiming at high consumption of fuel oil for startup of lean coalfired boiler, the pure oxygen ignition system of a power generation company was reformed, and a startup mode “recurrently heating from deaerator to startup flash tank” was adopted. The startup fuel oil consumption of the unit was reduced obviously. The better economic benefit was obtained, and the cost of the reformation can be recovered for a year.

Key words: Keywords:lean coal, fuel oil for startup, pure oxygen ignition, recurrently heating；oil saving