DRYING APPARATUS FOR LITHIUM SECONDARY BATTERY SEPARATION FILM

The present invention relates to a drying device for a lithium secondary battery separator film, including: a preheating unit that raises a film temperature to a level below the boiling point of an MC solvent and removes the MC solvent from the pores of the film as much as possible; a drying unit fo...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHO KYUNG CHUL, LEE YONG JIN, DO KYU HOI, LEE HO CHUL
Format: Patent
Sprache:eng ; kor
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The present invention relates to a drying device for a lithium secondary battery separator film, including: a preheating unit that raises a film temperature to a level below the boiling point of an MC solvent and removes the MC solvent from the pores of the film as much as possible; a drying unit for evaporating and drying the MC solvent remaining in the film by heating the film preheated in the preheating unit to a temperature above the boiling point of the MC solvent; and a cooling unit for cooling the film heated in the preheating unit and drying unit to room temperature. Accordingly, the MC solvent can be easily recovered from a film surface used in an extraction process of removing oil during a manufacturing process of the lithium secondary battery separator film, and the MC solvent evaporated during the recovery process of the MC solvent is prevented from being discharged to the atmosphere. 리튬이차전지 분리막 필름 건조장치에 관한 것으로, MC 용재의 끓는 점 이하의 수준으로 필름 온도를 승온하고, 필름 기공에 묻어있는 MC 용재를 최대한 제거하는 예열부; 예열부에서 예열된 필름을 MC 용재의 끓는 점 이상의 온도로 가온하여 필름에 잔류하는 MC 용재를 증발 건조시키는 건조부; 예열부 및 건조부에서 가열된 필름을 상온으로 냉각하는 냉각부;를 포함하는 기술 구성을 통하여 리튬이차전지 분리막 필름 제조과정에서 오일을 제거하는 추출공정에서 사용되는 필름 표면에서 MC 용재를 간편하게 회수할 수 있게 되고, MC 용재의 회수과정에서 증발 MC 용재가 대기중으로 배출되는 것을 방지할 수 있게 되는 것이다.