燃料与化工 ›› 2019, Vol. 50 ›› Issue (5): 1-4.

• 综述与专论 •    下一篇

荒煤气在焦炉上升管内的流动与传热研究

赵勇1 黄海清2 沈毅1 杨万鑫2 邹声华2   

  1. 1.湖南华菱节能环保科技有限公司, 长沙411100;2.湖南科技大学土木工程学院, 湘潭411201
  • 出版日期:2019-09-23 发布日期:2019-10-18

Study on the flow and heat transfer of raw gas in ascension pipe

Zhao Yong1  Huang Haiqing2  Shen Yi 1  Yang Wanxin2  Zou Shenghua2   

  1. 1.Hunan Hualing Energy Saving and Environmental Protection Technology Co.,Ltd.,Changsha 411100,China;
    2.School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China
  • Online:2019-09-23 Published:2019-10-18

摘要:

采用热平衡原理,计算了荒煤气在上升管传热量的大小和温度的变化趋势。通过计算得到,辐射传热对上升管的传热过程有较大影响,辐射传热的存在显著提高了传热系数。与仅对流传热存在的情况相比,混合传热促进了荒煤气在管内温度场的变化,截面平均温度比纯对流情况下的温度低,辐射传热的存在导致截面平均温度下降。

关键词: 上升管, 荒煤气, 辐射传热, 数值计

Abstract: Based on the principle of heat balance,the variation trend of heat transfer and temperature of waste gas in ascension pipe is calculated.It is calculated that the radiating heat transfer has a greater influence on the heat transfer process of ascension pipe,and the existence of the radiant heat transfer significantly increases the heat transfer coefficient.Compared with the existence of convective heat transfer,mixing heat transfer stimulates the change of raw gas in temperature field in the ascension pipe,and the average temperature of cross-section is lower than that of pure convection.The existence of radiating heat transfer results in decrease of the average temperature of the cross section.

Key words: Ascension pipe, Raw gas, Heat radiation transfer, Numerical calculation

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