中国电机工程学报Issue(17)：4417-4422,6.DOI:10.13334/j.0258-8013.pcsee.2015.17.016
细粉半焦循环流化床预热过程实验研究
Experimental Study on Preheating Process of Fine Char in a Circulating Fluidized Bed
摘要
Abstract
Fine char is the byproduct from low rank coal pyrolysis with the characteristics of almost no volatile, high ignition temperature, difficulty in burning-out. It is practically significant to realize high efficient combustion for the grading utilization of low rank coal. Based on theory of preheating strengthening combustion, a new technology for preheating fine char in a circulating fluidized bed (CFB) was proposed. On a pilot scale test rig, the preheating process of the fine char in a CFB was studied. In the experiment, the primary air was used to transport the fine char to the CFB without air distributor and bed material. The experimental results show that the fine char can be preheated to 850℃ and the CFB can be operated steadily and continuously in the air equivalence ratio of 0.37, which provides good condition for the following high efficient combustion. The circulation of high temperature fine char in the CFB is key to the self-sustaining preheating process.关键词
细粉半焦/循环流化床/预热/燃烧Key words
fine char/circulating fluidized bed/preheat/combustion分类
能源科技引用本文复制引用
么瑶,吕清刚,朱建国,欧阳子区,周祖旭..细粉半焦循环流化床预热过程实验研究[J].中国电机工程学报,2015,(17):4417-4422,6.基金项目
中国科学院战略先导科技专项(XDA07030100)。Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA07030100) （XDA07030100）
