The induced draft fans and flue gs desulphurization(FGD) booster fans for 2×1 000 MW ultrasupercritical units in one power plant

all are two axial-flow fans with adjustment of the stationary blades

having high power consumption in operation.In order to reduce the service power consumption rate

it is intended to retrofit the FGD booster fans with the induced draft fans together.For this

a retrofit scheme of using a tapered tube section to replace the main component of FGD booster fan proper

and retrofitting the induced draft fans to increase their speed and capacity

has been put forward.After implementation of said scheme

the service power consumption rate reduced 0.237% in full load operation of the untis

having remarkable effectiveness of energy-saving.