Research progress and future perspectives of polyphenylene sulfide fiber for bag filter
Significance Polyphenylene sulfide(PPS)fiber serves as the main material for filter bags,a crucial core component of baghouse dust collectors.It is widely applied in the dust removal of high-temperature industrial flue gas,such as coal-fired boiler plants,municipal waste incineration plants,and power plants.With the increasingly stringent atmospheric emission standards in recent years,the mandatory implementation of ultra-clean flue gas emissions for certain industrial enterprises,as well as the application requirements for high performance,long service life,differentiated and multifunctional,there have been higher requirements for PPS fiber.However,to the best of our knowledge,no comprehensive overviews focused on the continuous development of PPS fibers for filter bag have been reported.For a more comprehensive understanding of the present development status of PPS fibers,this review provides a systematically investigation for the development history and current production capacity of it both domestically and internationally,the research progress and existing issues in the development of PPS fibers for baghouse dust removal.This paper aims to provide insights and guidance to promote the research,production,and application of differentiated functional PPS fiber for high-temperature dust removal in China.Progress To meet practical application requirements,PPS fiber is developing towards finer and ultrafine deniers,profile fiber,and with antioxidant,catalytic and more functions.At present,the fineness of PPS ultrafine fibers can reach the micron or even nanometer level,and the fabrication methods mainly include melt-blown spinning,melt electrospinning,and sea-island melt spinning.Among them,melt-blown spinning is the most widely used method for the production of PPS ultrafine fibers due to its advantages of larger production output,shorter process,and lower cost.Although profiled PPS fibers include trilobal,Y-shaped,and split shapes currently,only trilobal PPS fibers are commercially available,with Japan's Toyobo being the sole manufacturer.The antioxidant modification of PPS fibers is aimed at addressing the problems of fiber fracture,mechanical strength degradation,and service life shortening of PPS filter when it is exposed to the gaseous components at high temperatures,and further enhance its structural stability in a harsh environment.Currently,the main approaches reported to improve the thermal and oxidation resistance of PPS fibers include surface film-forming method and direct addition method.The surface film-forming method refers to the surface treatment solution prepared by antioxidant,nanoparticle or high-performance resin dipping or spraying it on the surface of PPS fibers or nonwoven material to formulating an antioxidant protective layer.The direct method refers to melt spinning after blending the antioxidant,nanoparticle or high-performance resin with PPS resin directly.P PS-based filter bags with catalytic function are fabricated by loading catalysts such as manganese oxide(MnO2,Mn2O3)and cerium oxide(CeO2)to decorated PPS fibers or its needle-punching fibrous felts by using in-situ deposition,impregnation calcination and directed coating.It is aimed to achieve a novel integrated filtration material with compact structure and low cost that can provide both harmful gas purification and fine dust removal functions.Conclusion and Prospect Study on key preparation technologies for differentiated and functional PPS fibers in China commenced relatively late.There are still some problems such as inadequate follow-up in fundamental research,imperfect and immature production processes,and poor product quality stability.Breakthrough in the key research areas and industrial production of differentiated functional PPS fibers such as fine/ultrafine deniers,profile,antioxidant,catalysis,is not only an urgent need for market applications,but also the requirements for the high-quality development of high-performance fiber during the"14th Five-Year Plan"period.Hence,to achieve independent production of differentiated functional PPS fibers,it is imperative for enterprises,universities,and research institutes to collaborate on fundamental raw materials,key equipment,production processes,and other aspects in a joint effort to overcome these challenges.
bag filterpolyphenylene sulfide fiberultrafine fiberprofiled fiberantioxidantioncatalyzefilter bag material
万方数据
维普
