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| Thermal Test and Analysis of Sintering Cooling System |
| DONG Hui1,LIN He-yong1,2,ZHANG Hao-hao1,CAI Jiu-ju1,XU Chun-bai3,ZHOU Jie-wang3 |
1. SEPA Key Laboratory on Eco-Industry, Northeastern University, Shenyang 110819, Liaoning, China
2.Yingkou Institute of Boiler and Pressure Vessel Inspection, Yingkou 115000, Liaoning, China
3. Product Manufacturing Department, Angang SteelGroupCo., Ltd., Anshan 114021, Liaoning, China |
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Abstract According to the thermal test and analyzing of a certain sinter machine, the waste heat generation, conversion, recovery and utilizing of the sinter machine were investigated. Taking a 360m2 sinter machine in Angang steel as an example, the results show that the fuel consumption is 1623.13MJ per ton sinter. The production of one ton sinter accompanies with the waste heat is about 1439.36MJ, and the sensible heat of hot sinter and sintering flue gas accounts for about 70.87% and 29.13% respectively. Currently, only the high temperature cooling gas was used which accounts for about 40.29% of the waste heat. In the processes, the maximum exergy loss occurs in the conversion from the chemical exergy of fuels to the temperature exergy of sinter and the flue gas; follows by the conversion from the temperature exergy of sinter to cooling air; and the last is in the conversion from the temperature exergy of cooling air to the exergy of steam. It is the key approach to reduce exergy loss to reduce the air leakage rate of sinter strand and cooler, to set desirable flow rate of cooling gas and sinter thickness in the cooler.
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Received: 14 September 2010
Published: 17 November 2011
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2011, Vol. 46 
