By taking a RP medium-speed coal pulverizer as the research object

the status evaluation model for medium-speed coal pulverizers was established.According to running state of the RP medium-speed pulverizer

such factors as the coal fineness

the pulverizer capacity and current

and the separator outlet temperature were regarded as the evaluation indices.The fuzzy matter element theory and the Euclid approach degree principle were applied to construct the Euclid approach degree composite fuzzy matter element.Then the fuzzy matter element model for operation status evaluation of coal pulverizers was established.The analytic hierarchy process(AHP) method was employed to determine the weight coefficient of each evaluation index

and to evaluate running state of the coal pulverizer quantitatively and qualitatively.The new model was verified on the RP903X medium-speed coal pulverizer for a 300 MW unit boiler and the results showed that

this model can make a reasonable evaluation for running state of the RP medium-speed coal pulverizer rapidly and effectively

which enhanced the safety and stability of the unit operation.