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浙江大学学报(工学版)
浙江大学学报(工学版)
能源工程与动力工程     
烧结矿立式冷却装置气固传热性能分析
黄连锋1,田付有1,厉青2,范利武1,俞自涛1,武海云2
1. 浙江大学 热工与动力系统研究所,浙江 杭州 310027；2. 浙江华西铂瑞重工有限公司,浙江 杭州 310030
Analysis of gas-solid heat transfer performance in vertically-arranged sinter coolers
HUANG Lian-feng1,TIAN Fu-you1,LI Qing2,FAN Li-wu1,YU Zi-tao1,WU Hai-yun2
1. Institute of Thermal Science and Power Systems, Zhejiang University, Hangzhou 310027, China; 2. Zhejiang CWPC and BR Heavy Industry Co., Ltd, Hangzhou 310030, China
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摘要：

为了分析烧结矿立式冷却装置的气固传热性能,建立一维稳态模型对料层气固传热进行计算,以回收的空气热量与空气作为评判标准,比较不同工况下的余热回收能力. 采用数值迭代算法求解模型. 结果表明,对于给定尺寸的烧结矿立式冷却装置和相同特性的烧结矿颗粒,烧结矿入口温度每增加10 ℃,空气值平均升高1.28 GJ/h；空气入口温度（环境温度）每增加10 ℃,空气值平均降低1.69 GJ/h；随着气料比从550到700 m3/t(标准状况下)逐渐增加,空气值增大至49.51 GJ/h后明显减小. 随着空气入口温度的增加,最大空气下降,对应的最佳气料比却升高；随着烧结矿入口温度的增加,最大空气及对应的最佳气料比均升高. 研究结果为生产实际中在工况改变的情况下通过调节气料比获得最大余热回收性能提供了参考．
Abstract:

 In order to analyze the gas-solid heat transfer performance in vertically-arranged sinter coolers, a one-dimensional steady-state model was established to evaluate the gas-solid heat transfer in a sinter bed. The amounts of energy and exergy recovered were used as the criteria to compare the waste heat recovery ability under different operating conditions. The model was solved numerically by an iterative algorithm. The results indicate that, when the size of vertically-arranged sinter coolers and the sinter particle parameters are given,the average air exergy increase is  1.28 GJ/h for each 10 ℃ increase of the sinter inlet temperature;whereas it decreases by 1.69 GJ/h for each 10  ℃ increase of the air inlet temperature(ambient temperature).With the gas-to-sinter flow rate ratio being increased from 550 to 700 m3/t (at standard temperature and pressure), the air exergy first increases toup to 49.51 GJ/h, followed by a sudden drop.Increasing the air inlet temperature leads to a drop of the maximum air exergy, while the corresponding optimal flow rate ratio increases. However, both the maximum air exergy and its corresponding optimal flow rate ratio increase with raising the sinter inlet temperature. The results presented may serve as a reference to maximize waste heat recovery in industrial practice by adjusting the flow rate ratio.
出版日期: 2015-12-26
:  TK 124  
基金资助:

浙江铂瑞能源环境工程有限公司科学技术项目（H20131352）
通讯作者: 俞自涛，男，教授     E-mail: yuzitao@zju.edu.cn
作者简介: 黄连锋（1990-），男，硕士生，从事余热利用技术研究. E-mail: wanglitou2@zju.edu.cn
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黄连锋,田付有,厉青,范利武,俞自涛,武海云. 烧结矿立式冷却装置气固传热性能分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.05.015.

HUANG Lian-feng,TIAN Fu-you,LI Qing,FAN Li-wu,YU Zi-tao,WU Hai-yun. Analysis of gas-solid heat transfer performance in vertically-arranged sinter coolers. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.05.015.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.05.015    或    http://www.zjujournals.com/eng/CN/Y2015/V49/I5/916

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