Aimed at improving the economical efficiency of power plant

regulation of boiler operation parameters were conducted

such as

raising the exit temperature of coal mill

adjusting the oxygen concentration

combustion chamber draft

primary air pressure and volume

regulating the pressure difference between wind box and furnace

and so on.Usually

effective regulation can dramatically enhance the heat efficiency of boiler

and obviously reduce the power consumption of forced

induced draft fans and the primary air fan

comparing to the baseline condition.A 350 MW unit boiler was taking as an example to carry out the reasonable regulation

its heat efficiency was increased by 0.5%~1% totally

and the calculated annual auxiliary power consumption saved by forced

induced draft fans and the primary air fan reached 1 400 000~4 200 000 kW·h.