Our all-welded plate air preheater is customized for VOC catalytic combustion furnaces. Adopt stainless steel corrugated full-welded plate structure with high heat recovery efficiency, completely separate raw VOC waste gas and high-temperature flue gas to eliminate explosion risks. It supports self-sustaining operation of catalytic furnace, greatly cutting auxiliary heating fuel cost, compact and easy to retrofit, widely used in painting, printing, chemical pharmaceutical VOC waste gas treatment systems.