摘要
以离心粒化的高炉渣粒为热源,以空气为换热介质,利用自行设计的移动床,进行了高温渣粒的余热回收实验。文章研究渣粒质量流量、空气体积流量和渣粒初温对热回收效果的影响。实验结果表明:随着空气体积流量的增加,出口空气温度减小,而热回收率增加,其中空气流量在200~400m^3/h范围时,热回收率增加明显,当空气流量到达400m^3/h时,热回收率增加缓慢。渣粒流量在0.033~0.045kg/s之间时,空气温度随着渣粒质量流量增加明显升高,超过0.045kg/s之后,空气温度变化趋于平缓,但热回收率反而下降。空气温度随着渣粒初温的增加而增大,但在实验条件下,热回收率略有下降。
Using slag granules as heat source and air as heat mediums, the experiment of slag heat re-covery was done with moving bed. The relations between heat recovery results and mass flow of slag, volume flow of air and initial temperature of slag were studied in the experiment. The results showed that with increasing of air volume flow between 200 400m^3/h heat recovery rate increased obvious-ly. When mass flow exceeded 400m^3/h, heat recovery rate increased slowly; but air temperature in-creased throughout. With increasing of slag mass flow between 0. 033-0. 045 kg/s air temperature in-creased obviously. When mass flow exceeds 0.045kg/s, air temperature changed slowly; but heat re-covery rate declined. Air temperature increased with increasing initial temperature of slag particles, but under the experimental conditions, heat recovery rate decreased slightly.
出处
《冶金能源》
2017年第3期40-42,61,共4页
Energy For Metallurgical Industry
关键词
高炉渣粒
离心粒化
效果
热回收效率
slag granules centrifugal granulation results heat recovery rate
