When we think of combustion, the image of flames and red-to-white hot processes often comes to mind. However, innovative technologies like the TORBED reactors have expanded the possibilities of combustion processes, allowing for unprecedented control and precision.
One remarkable application of this technology is the controlled combustion of carbon in Spent Pot Lining (SPL), a hazardous waste generated by the aluminium smelting industry. SPL also contains cyanides that can be effectively destroyed when combustion of the carbon raises temperatures above 700°C. However, SPL also contains a glass-like material that melts at approximately 710°C. This narrow temperature range poses a significant challenge, as exceeding the threshold leads to agglomeration and a combustion process failure. This process was attempted in Fluidized Bed Combustion, Circulating Fluidized Bed Combustion and Rotary Kiln Technology and was not successful.
Enter Dr Grant Wellwood, a bright young engineer from Australia, who recognized the potential of the TORBED reactor to address this issue. Dr Wellwood spearheaded the development of a process capable of combusting SPL within a narrow operating window around ~705°C. His groundbreaking work resulted in a highly controlled SPL treatment system that has been operational for some 40 years. This enduring success stands as a testament to the exceptional temperature control made possible by the TORBED reactor technology.
