欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
煤层气和煤矸石CFB混烧中，由于喷入的是可燃气体，燃烧所需的空气量及配风方式需要改变，必然会对炉内的气固流动特性产生影响。本文在煤层气和煤矸石某一混烧比下，确定所需的配风量和配风方式，通过改变混合气流的布置方式，对CFB炉内气固流动特性进行数值模拟。研究结果表明合理的布置方式可使炉内的气固混合较好，流动较稳定，且混合气流布置在两层二次风之间时，炉内密相区大部分颗粒速度较高，气固相间混合充分；密相区固体颗粒浓度较其它两种布置方式高，稀相区则相反，是比较合理的布置方式。研究结果对CFB混烧优化设计具有重要指导意义。
英文摘要：
When the coal-bed gas and coal gangue were co-combusted in CFB, the air volume needed in the combustion process and gas distribution mode must be changed, and this change would work on the gas-solid flow behavior in the CFB. In this paper, by the thermodynamic calculation, the air volume and air distribution mode were confirmed firstly in a fix gas/gangue mixing rations, and then the numerical simulation of the gas-solid flow behavior were done when the disposal mode of the gas burner was changed. The results show that the appropriate disposal mode has a good effect on the gas-solid mixing and the flow behavior. When the mixing gas was disposed between the upper-layer and down-layer of second air, the particle velocity was higher in dense bed, and the gas-solid mixing was well-proportioned. Compared with the other two disposal mode, the particle concentration was higher in dense bed, and the particle concentration in dilute phase region was lower, it is a reasonable disposal mode. The result provided some guiding significance for the combustion optimization of coal-bed gas and coal gangue.
同期刊论文项目
同项目期刊论文
期刊信息
位置：