高水分褐煤固体热载体部分气化质量平衡和热量平衡分析计算

Calculation and Analyisis of Heat and Mass Balance on the Partial Gasfication of High-Mositure Lignite Used as Heat Carrier

通过干馏和气化过程产物的加和计算，得到煤气的组成、数量和热值等气化指标；由总气化过程的质量平衡，得到了带出物数量及其合碳率与床层含碳率的关系式；由总气化过程的热量平衡，得到了冷煤气效率和气化热效率等经济性指标．计算结果和分析表明，固体热载体部分气化高水分褐煤，能得到中热值煤气和合碳量比原煤高得多的焦．

The composition, quantity and heat value of gas were calculated by sum of production of retorting adn gasfication of the lignite. The relation of the carbon-bearing ratio of char with the quantity of carryover body and its carbon-bearing ratio was deduced from mass balance of the overall process, and the calorific effciency and the cooled gas efficiency were deduced from heat balance of the overall process. The results and analysis demonstrated that the heating value of gas obtained was moderate and that the heating value of char obtaained was much higher than that of the parental lignite. Therefore the gasfication method is a promising technology for utilization of highmoisture lingnite.