Heat-Resistant Filters

High-temperature filters are specialized filtration elements designed for hot exhaust streams or high-temperature process environments. Conventional synthetic fiber or glass fiber media deteriorates above 80°C — deforming, delaminating, and releasing adhesives — making them unsuitable for high-temperature processes. Baisheng Technology provides high-temperature filters rated for continuous operation at 250°C to 400°C, using heat-resistant glass fiber media with inorganic bonding and stainless steel frames.

Grades are available for 250°C, 350°C, and 400°C continuous operation, with advanced specifications reaching high-temperature HEPA grade (H13, H14), simultaneously meeting cleanliness and heat resistance requirements. Design considerations include thermal expansion coefficient matching between media and frame, high-temperature sealing mechanisms (heat-resistant silicone or metal gaskets), thermal fatigue effects from start-stop cycles, and allowable instantaneous peak temperatures.

Typical applications: semiconductor diffusion and oxidation furnace exhaust end-of-line filtration, lithium battery electrode plate drying ovens, metal heat treatment furnaces, food baking tunnel ovens, automotive parts coating cure ovens, and chemical reactor tail gas treatment.