Green Chemistry and Manufacturing System Division, Korea Institute of Industrial Technology, Youngin, South Korea.
J Air Waste Manag Assoc. 2010 Feb;60(2):137-41. doi: 10.3155/1047-3289.60.2.137.
The high costs of ceramic and Teflon filter media for hot gas cleaning has limited their industrial applications. This paper presents a foam coating technology that can be used to produce an inexpensive and highly efficient filter for industrial applications. A new apparatus was designed and built that coats porous glass mats with liquid-phase polytetrafluoroethylene (PTFE). The machine generates bubbles, enables the formation of uniform micropores less than 45 microm in diameter, and produces a product with air permeability greater than 5.5 cm3/cm2/sec. The resulting filter was found to be thermally stable up to 270 degrees C without any visible distortion and was comparable in dust collection efficiency to other commercial filter media. In addition, its de-dusting efficiency was greater than 85%, which is similar to that of other test filter media.
用于高温气体净化的陶瓷和聚四氟乙烯（Teflon）过滤介质成本高昂，限制了它们在工业中的应用。本文提出了一种泡沫涂层技术，可用于生产用于工业应用的廉价且高效的过滤器。设计并制造了一种新的设备，该设备用液态聚四氟乙烯（PTFE）对多孔玻璃垫进行涂层处理。该机器会产生气泡，形成直径小于 45 微米的均匀微孔，并生产出透气度大于 5.5 cm3/cm2/sec 的产品。结果表明，该过滤器在 270°C 下热稳定性良好，没有任何可见变形，并且在集尘效率方面与其他商业过滤介质相当。此外，其除尘效率大于 85%，与其他测试过滤介质相似。
