昭通褐煤气化扩大试验研究

针对昭通褐煤的特点 ,在气化煤量为 0 .3t/h的焦载热流化床气化扩大试验装置上进行了试验研究 .研究结果表明 ,煤气中焦油量很小 ,有利于煤气生产的后期处理 ;与移动床气化和普通流化床气化相比 ,煤气热值和气化产率都有较大增加 ,煤气热值已接近城市煤气的要求 ;加大气化煤量可增加提升段燃烧的易燃成分 ,从而提高了燃烧温度和气化温度 ;气化煤量的变化对褐煤气化产率和产量的影响较大 .对于开发昭通褐煤资源来说 ,采用本工艺技术生产城市煤气是一个较佳的方案 .

THE ENLARGE TEST STUDY OF GASIFICATION FOR ZHAOTONG LIGNITE

In the light of characteristics of Zhaotong lignire,the test study of gasification has been developed at the enlarge test installation with fluidized bed gasifier using coalite as solid heat carrier which gasify lignite with the ability of 0.3 t/h. The study results demonstrate that gas tar is very little,favorable for later stage of gas manufacture;that calorific value and yield of gas are increase to a certain of extent by comparison with packed bed gasifier and general fluidized bed gasifier; that the calorific value of gas has approached the national standards of city gas;that combustion temperature and gasification temperature is elevated through increasing coal supply to increase inflammable material in solid heat carrier of the riser,but,the change of coal supply exerts an influence on the rate and the yield of gasification.For these reason,the better plan of the development of Zhaotong lignite is gas making by this technological process.