Improvement of Monitoring System for Fuel Consumption in Oil-fueled Pipe Drier

The higher oil consumption of oil-fueled pipe drier HXD in practical production was caused mainly by that:1) the accuracy of mixed air temperature detector was distorted by direct simulation water impinging;2) there were too less detectable parameters to set the burner to its optimal conditions;3) the higher moisture content remained in tobacco at the beginning of a batch.Therefore,the monitoring system was improved by:installing a V-shape deflection plate in front of the temperature sensor to prevent simulation water from directly spraying upon the sensor;adding an oil meter and an exhaust gas temperature detector;and revising the run-in programme for tobacco drying operation.After improving,the qualified rate of moisture content in dried cut tobacco increased from 96.58% to 98.7%,time for equipment warming up decreased from 50.2 min to 38.8 min,the yearly average fuel consumption reduced from 2.64 L/100 kg to 2.41 L/100 kg.