バグフィルター構造による払い落し効率への影響

摘要

In recent years, non-woven bag filters have been used in waste incinerators for efficient collection of dust and removal of detrimental gas. However, dust dislodgement efficiency decreases with time until the bag filters are no longer useable. Dust adhering to the fabric is a major determinant of bag filter life. In this study, a fiat filter was used to study the relationship between various parameters of the bag Filters' structure and dust dislodgement efficiency. The results confirm that the filter density and the modulus of elasticity of baking fabric in bag filters affect the dust dislodgement efficiency of a bag filter. Higher filter density in a bag filter prevents dust from penetrating the filter, thus helping the filter to dislodge dust easily. The filter having high modulus of elasticity of backing fabric has a small displacement, and prevents the dust from penetrating the bag filter. The filter with the hybrid structure has been suggested, Filter with a hybrid structure has been suggested, its effectiveness has been confirmed for the improvement of dust dislodgement efficiency.%環境問題が重視されている今日では，クリーンな地球環境を保つために，生産設備などから排出されている気流の中に含まれるダストを気流から分離し，収集する集塵装置が設けられている.現在，ゴミ焼却炉や高炉から出た粉塵を含む有害ガス，ダイオキシン及び重金属などを高効率で除去する方法として繊維材料で構成されているバグフィルターが広く用いられている.バグフィルターは，粒子状物質に吸着したダイオキシン類など環境汚染物質の除去性能が高く評価されたため，多くの他の排ガス処理システムにも応用され始めている.