The converter adopts a vertical SS304 stainless steel packed tower structure with a maximum temperature resistance of 700°C.   It delivers stable conversion efficiency, flexible operational adjustment and precise temperature control, and achieves maintenance-free operation. The tower is configured with four packing layers filled with V₂O₅ composite catalysts combining low-temperature and medium-temperature catalytic formulations. This design not only realizes a low light-off temperature but also ensures an SO₂ conversion rate of over 98%. It significantly improves start-up preheating efficiency and reduces preheating duration.   Dedicated thermometer interfaces are reserved at the top and bottom of each catalyst bed to support accurate temperature regulation and sustain high conversion efficiency. Each bed is equipped with a manhole to facilitate on-site catalyst loading and replacement.