The research and application of an air/pulverized coal on-line monitoring system for a 130 t/h pulverized coal-fired boiler

Based on a gas-solid two-phase theory and taking into account the pressure loss effect in the air-coal combined flow process a method was proposed for measuring the pulverized coal concentration in primary air pipe after the mixing of air and the pulverized coal. The above measurement was carried out through the use of an energy balance method. Also described are the method and procedures for conducting the on-line and real-time monitoring of the pulverized coal and air speed in the primary air pipe with the use of a dynamic link library technique. The above-cited on-line monitoring method has been found to be very effective for its intended purposes when used on-site at thermal power plants.