Application Of HATC In Radiant Tube Combustor

Radiant tube combustor is a common equipment in industrial annealing furnace. It is very important for the function and energy consumption of the whole furnace that whether its design is rational. Regenerative combustion(HTAC) is a new technology that being developed since 1990's. It's popular for its advantages such as high efficiency, low consumption and ultralow expulsion of NOX. In this article, we take the annealing furnace of ANSTEEL cold rolling silicon steel factory as example, make a deep analysis and lots of experiments on its drying section, involved the composition, consumption, annealing temperature and so on. Through calculating and trials, we find it feasible and efficient to improve it with HTAC technology.During study,we find the main reason of its great consume from the analysis of the digitals, and bring up the reform plan. The heat balance analysis of two different conditions(without HTAC and with HTAC) will be carried out. Compare with the former, the caculating result with HTAC is obviously more rational and feasible. With the help of commercial softwire, heat exchanging process simulation is carried out. The sizes and exchange cycle could be defined. By the result, the improve plan is confirmed——change radiant tubes into regenerative radiant tubes, set two burners work in turn instead of one burner continued working, then the heat utilization ratio and the service life of the equipment will be also improved. Through comparing of digitals before and after improvement, the superiority of the improvement will be proved again.The sense of this study is: the whole plan is on the base of actual working background, stick on practical condition and could reach the schedule requests with a pretty low financial cost. The efficiency of reuse old equipment is high while the cost of improvement is low. Besides ariving the actual needs of the domestic corporations, it also sets a real example for other similar equipments' improvements.