Activities of online monitoring test for primary air / fuel on 900 MW boiler by using portable online instrument based on light inpulse method for monitoring pulverised coal in Bull Run Power Plant

Tennessee State of USA

have been presented. The results show that the particle size of pulverized coal in different pipelines to be awfully different from each other; as affected by elbow bend pipe

separating phenominon of particle size and density of pulverized coal may be produced after passing through the said elbow bent pipe

but after flowing through a definite length of distance

coal dust on crosssection inside the pipeline tends to be uniformity; in pipelines of pulverized coal having good flowing status

the coaldust concentration and particle size have comparatively uniform distribution on the crosssection area

this measurement result also shows that the monitoring instrument of this kind can perfectly monitoring parameters of the primary air / fuel.