烧结矿炉式冷却装置料层阻力试验研究
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摘要
针对烧结矿炉式冷却装置料层阻力分布特性问题,开展料层阻力特性试验研究。重点分析了料层高度0.8～1.0m、掺料比0～25%、冷却风流速0.4～2.2 m/s的参数范围内的料层阻力特性。研究结果表明:掺料比对料层阻力影响最大。烧结矿炉式冷却装置料层单位压力损失随掺料比的增加而增加,当掺料比大于15%后,增加掺料比对料层单位压力损失的影响降低;当料层高度一定时,单位料层压力损失与冷却风流速呈二次函数关系,随着冷却风流量的增加而增加。
In view of the material bed resistance distribution characteristics of furnace type sinter cooling device, the experimental investigation on material bed resistance characteristics is conducted. The material bed resistance characteristics were emphatically analyzed within the range of such parameters as bed depth 0.8～1.0 m, admixture proportion 0～25% and cooling air rate 0.4～2.2 m/s. The research result shows that, the ratio of admixture has the greatest influence on the resistance of the material layer. The unit pressure loss of furnace type sinter cooling device increases with the increase of the ratio of admixture, when the ratio of admixture is greater than 15%, the effect of increasing the ratio of admixture on the loss of unit pressure decreases; when the bed depth is constant, the unit pressure loss of material bed is in a quadratic function relationship with the cooling air rate, and it increases with the increase of the cooling air rate.
In view of the material bed resistance distribution characteristics of furnace type sinter cooling device, the experimental investigation on material bed resistance characteristics is conducted. The material bed resistance characteristics were emphatically analyzed within the range of such parameters as bed depth 0.8～1.0 m, admixture proportion 0～25% and cooling air rate 0.4～2.2 m/s. The research result shows that, the ratio of admixture has the greatest influence on the resistance of the material layer. The unit pressure loss of furnace type sinter cooling device increases with the increase of the ratio of admixture, when the ratio of admixture is greater than 15%, the effect of increasing the ratio of admixture on the loss of unit pressure decreases; when the bed depth is constant, the unit pressure loss of material bed is in a quadratic function relationship with the cooling air rate, and it increases with the increase of the cooling air rate.
引文
[1] 董辉,蔡九菊,赵勇,等.烧结过程余热资源高效回收与利用装置及方法:CN102168922A[P].2011.
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[12] 黄寓理,姜培学,胥蕊娜.气体在微细多孔介质中的流动阻力研究[J].工程热物理学报,2007,30(5):1360-1362.
[13] 董辉,冯军胜,李磊,等.冷却风量影响烧结余热竖罐回收中火用传递系数实验研究[J].东北大学学报(自然科学版),2014,35(5):708-711.
[14] 董辉,李磊,刘文军,等.烧结矿余热竖罐式回收利用工艺流程[J].中国冶金,2012,22(1):6-11.
[2] 董辉,李磊,刘文军,等.烧结矿余热竖罐式回收利用工艺流程[J].中国冶金,2012,22(1):6-11.
[3] 孔宁,温治,冯俊小,等.干熄炉内流动与传热过程数学模型的研究[J].冶金自动化,2004,28(3):27-30.
[4] Liu Y,Yang J,Wang J,et al.Energy and exergy analysis for waste heat cascade utilization in sinter cooling bed[J]. Energy,2014,67(4):370-380.
[5] 王建平,田万一.烧结矿冷却过程的余热利用研究[J].烧结球团,2013,38(1):50-53.
[6] 赵斌,张玉柱,苍大强,等.立式烧结冷却机与余热发电工艺研发[J].烧结球团,2009,34(6):5-10.
[7] Feng J,Dong H,Dong H.Modification of Ergun’s correlation in vertical tank for sinter waste heat recovery[J].Powder Technology,2015,280:89-93.
[8] 力杰.烧结余热竖罐式回收过程传热数值计算[D].沈阳:东北大学,2011.
[9] 董辉,力杰,罗远秋,等.烧结矿冷却过程的实验研究[J].东北大学学报(自然科学版),2010,31(5):689-692.
[10] 杨斌,张忠孝,冯祥,等.竖式烧结矿冷却塔内气固换热特性研究[J].烧结球团,2015,40(1):10-13.
[11] 田付有,黄连锋,范利武,等.双粒度混合烧结矿颗粒填充床压降实验[J].浙江大学学报(工学版),2016,50(11):2077-2086.
[12] 黄寓理,姜培学,胥蕊娜.气体在微细多孔介质中的流动阻力研究[J].工程热物理学报,2007,30(5):1360-1362.
[13] 董辉,冯军胜,李磊,等.冷却风量影响烧结余热竖罐回收中火用传递系数实验研究[J].东北大学学报(自然科学版),2014,35(5):708-711.
[14] 董辉,李磊,刘文军,等.烧结矿余热竖罐式回收利用工艺流程[J].中国冶金,2012,22(1):6-11.