The paper calculates and optimizes the energy-quality balance of the 2 million t"chain grate-rotary kiln-ring cooler"system in a Pelletizing Plant,according to the data collected on site,the heat utilization rate of this system is 22.36%,the waste heat recovery rate is 71.62%.Opti-mized when the amount of coal sprayed is 5.00～5.40 t/h,the fixed carbon content of pulverized coal is 76%～82%,the burn-out rate of pulverized coal is above 97.5%,the oxygen content of prehea-ting section Ⅱ can be stabilized at14.0%～16.0%,which is conducive to the oxidation of pellet ores and the effective suppression of nitrogen oxides generation.
chain grate-rotary kiln-ring cooler systemaccounting for energy-mass balanceoptimized operation
万方数据
