6 Best Practice Tips for Burner & Combustion System O&M;

摘要

Coal and Air Flow Measurement and Control 1. Online coal and primary air flow measuring devices can be helpful to more precisely balance pipe-to-pipe coal and air flows. Some utility customers have adopted on-line primary air flow measurement on a per mill basis as a first step, for mill air/coal (A/C) ratio control and proper mill operation and performance. Online measurement of coal flow has been used by some utilities that still have volumetric coal feeders instead of gravimetric feeders installed in their milling systems. Proper A/C characterization on a mill basis is the first step in ensuring optimum mill performance for any installation. Nearly all recent low NOx burner retrofits include a mill evaluation and test program to establish current operating conditions for proper burner design.