Through test and analysis

the influence of putting auxiliary air of the double inlet and double outlet coal pulverizer into operation upon ecomomic behavior of the boiler for 300 MW unit in one power plant has been obtained. The results show that the auxiliary air of coal pulverizer isn’t necessary to put into operation so lang as the primary air pipe of the pulverizer isn’t plugged up during the period of boiler operation; the auxiliary air of coal pulverizer can only put into operation before start-up or after shutdown of the coal pulverizer for purging the pipeline.