新型高精度过滤材料的设计与开发

Design and Development of New Low Emissions Filter Materials

高温烟气过滤材料通过纺织材料的微孔结构对烟气中的粉尘进行拦截,从而达到过滤清洁的目的。传统针刺过滤材料受工艺设备的影响,滤料结构中孔径较大,对直径极其微小的粉尘颗粒过滤性差,从而影响滤料的过滤精度。采用全水刺加工工艺,结合超细纤维层结构,制备了全水刺超细纤维复合滤料。与传统针刺滤料、覆膜滤料以及超细纤维针刺滤料相比,全水刺超细纤维复合滤料具有更微小的孔径,且滤料结构中没有较大的穿透性针孔结构,产品可以有效拦截更微小的粉尘颗粒,过滤性能更好,同时测试压差与针刺滤料水平相当,性能更优良,适用于多种高精度过滤工况环境。

The high-temperature flue gas filter material intercepts the dust in the flue gas through the micropore structure of the textile material so as to achieve the purpose of filtering and cleaning. Traditional needlepunched filter materials are affected by process and equipment. The pore size of the filter material structure is large, and the filterability of extremely small diameter dust particles is poor, which affects the filtration accuracy of the filter material. The full spunlace ultrafine fiber composite filter material is prepared by using the full spunlace processing technology and the ultrafine fiber layer structure. Compared with traditional needle-punched filter, PTFE coated filter and ultra-fine fiber needle-punched filter, it has smaller micropore, and could stop smaller diameter dust particles. It has an excellent filter performance and could be used in various of low emission working environment.