• 煤焦技术 •

### 焦炉上升管换热器综合传热系数的计算与讨论

1. 1.湖南科技大学土木工程学院， 湘潭411201；2.湖南华菱节能环保科技有限公司， 长沙411100
• 出版日期:2019-07-23

### Calculation and discussion for comprehensive heat transfer coefficient of riser heat exchanger

Huang Haiqing1  Zou Shenghua1  Shen Yi2  Zhao Yong2

1. 1.School of Civil Engineering, Hunan University of Science and Technology,Xiangtan 411201，China;
2.Hunan Hualing Energy Saving and Environmental Protection Technology Co.,Ltd.,Changsha 411100，China
• Online:2019-07-23

Abstract:

The convective heat transfer and radiation heat transfer of coke oven riser heat exchanger are calculated in one coking cycle.The averagecomprehensive heat transfer coefficient of heat exchanger is 52.8 W/(m2·K).In the whole coking process, the gas flow is fully developed, andthe radiation heat transfer has nothing to do with the flow state of the gas.In the later period of coking, the decrease of gas flow rate andthe decrease of heat transfer will result in the change of the wall temperature of the ascension pipe.In the late coking period, the sudden change of temperature in the inner wall can be reduced by strengthening the radiation heat transfer between the crude gas and the inner wallof the riser and increasingthe flow rate of the crude gas properly.