Method and Technique of Grade Recovery and Cascade Utilization (GRUC) Based on Sintering and Cooling Integration

Abstract:

The key problems and causes of recovery and Utilization of sintering waste heat were analyzed firstly, on the basis of sintering and cooling integration , the method and technique of grade recovery and cascade utilization (GRUC) was put forward according to the first and second laws of thermodynamics. The waste heat was recovered in grades according to the quality firstly, and then different qualities of residual heat recovered were utilized in cascades. The higher temperature part of sinter cooling waste gas was used for power recovery, the medium temperature part was used for direct thermal utilizations, such as drying and preheating of sinter mixture, combustion supporting for ignition, hot air sintering and so on, and the lower temperature part was used for absorption refrigeration. Last, a 360m² sintering machine of JTC was put forward as an example to validate economic feasibility of the process.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 1011-1015
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.1011
• Online since: December 2012
• Authors: Guo Wei Xie, Peng Li, Hui Dong
• Keywords: Energy, Integration, Recovery, Sinter, Waste Heat, Waste Heat Generation

References

[1] Zhongwu Lu, DaGang Zhou. Direction and Path of Iron and Steel Industry Energy Saving [J]. Iron and Steel 16(10) (1981):63-66(In Chinese).

[2] Jiuju Cai, Hui Dong, etc. Study on Grade Recovery and Cascade Utilization of Waste Heat From Sintering Cooling Process [J]. Iron and Steel 46(4) (2011): 88-92(In Chinese).

[3] Jiuju Cai. The Energy and Resources Saving Technologies Employed in Chinese Iron and Steel Industry and Their Development [J]. World Iron and Steel 4 (2009): 1(In Chinese).

[4] Jiuju Cai, Jianjun Wang, etc. Recovery of Residual-Heat Integrated Steelworks [J]. Iron and Steel 46(4)( 2011): 88-92(In Chinese).

[5] Yi Ding, Deming Shi. Waste heat power generation of sintering zone cooler in Masteel[C]//. national energy and thermal academic conference proceedings in 2006.HuBei: The Chinese Society for Metals , 2006: 344(In Chinese).