风量对炉膛周向热风分布规律的影响

IF 1.6 4区 工程技术 Q3 Chemical Engineering
B. Liu, Yuman Che, Ben-hui Shi, Hai-feng Li, Jin-lin Lu
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引用次数: 0

摘要

摘要以鞍钢新5号高炉为例,研究了不同风量下高炉炉底周长热风分布规律。结果表明:不同爆破体积下的爆破体积分布规律相似,即在奔流管0°、90°、180°和270°位置存在4个爆破体积较大的区域;不同风量下,90°和270°附近的风量差接近于0,对高炉内气流分布不均匀和填料床周向不对称影响不大。而180°附近风口的风量始终大于0°附近风口的风量,且随着风量从4600 ~ 5000nm3 /min的增加,差异不断增大,达到0.69 ~ 0.95 nm3/min。这种现象会导致180°侧焦炭消耗量增加,导致焦炭下降速度比0°侧大,从0.39 m增大到0.54 m,进一步导致高炉内鼓风体积分布不均匀和填料床周向不对称。与鞍钢实际生产相比较,所得结果与实际生产中的现象吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of blast volume on hot blast distribution rule around the hearth circumferentially
Abstract Based on Ansteel’s new No. 5 blast furnace (BF), the distribution rule of hot blast on the circumference of blast furnace hearth under different blast volume was studied. The results show that, the blast volume distribution rule is similar under different blast volumes, that is, there are four regions with large blast volumes at the 0°, 90°, 180° and 270° positions of the bustle pipe. Under different blast volumes, the difference of blast volume near 90° and 270° is close to 0, which has a minor effect on the uneven distribution of gas flow and circumferential asymmetry of packed bed in BF. However, the blast volume of the tuyere near the 180° is always larger than that of the tuyere near 0°, and with the increase of blast volume from 4600 to 5000 nm3/min, this difference keeps increasing, 0.69 to 0.95 nm3/min. This phenomenon will lead to an increase in the coke consumption on the 180° side, and cause a higher descending velocity of coke than that on the 0° side, this difference increases from 0.39 to 0.54 m, which could further result in the unevenness of blast volume distribution and the circumferential asymmetry of packed bed in BF. Comparing with the actual production in Ansteel, the results obtained in this work are in good agreement with the phenomenon in practical production.
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来源期刊
CiteScore
2.80
自引率
12.50%
发文量
107
审稿时长
3 months
期刊介绍: The International Journal of Chemical Reactor Engineering covers the broad fields of theoretical and applied reactor engineering. The IJCRE covers topics drawn from the substantial areas of overlap between catalysis, reaction and reactor engineering. The journal is presently edited by Hugo de Lasa and Charles Xu, counting with an impressive list of Editorial Board leading specialists in chemical reactor engineering. Authors include notable international professors and R&D industry leaders.
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