NOUFERROUS METALLURGICAL EQUIPMENT

The utilization of waste heat is playing an increasingly significant role in energy conservation, production enhancement, quality improvement of products, and cost reduction. It holds important practical significance for China s efforts in achieving energy-saving and emission reduction as well as sustainable development strategies. This study focuses on the efficient and stable operation of core equipment during waste heat recovery and wastewater treatment processes. Basic research and technological development were conducted through the performance analysis and optimization design of flash tanks. Based on the theoretical foundation of flashing, the flash tank was designed and calculated. When treating high-salinity wastewater, it was determined that scaling issues in the heat exchanger equipment before the flash tank inlet must be considered. The use of enhanced heat transfer tubes or scale inhibitors to suppress scale formation is recommended. Experimental studies were carried out to investigate the flashing characteristics of the flash tank. According to the experimental data analysis, when the feed method of the flash tank is water jet injection, the flashing efficiency can reach 90%. When the initial temperature t₁ is 80℃ and the velocity u is 2m/s, after 60 hours of operation, the heat transfer coefficient decreased by 38%. It is estimated that when the slag water flow rate is 3000t/h, the designed flow rate will be reduced by 6t/h.