Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Purification of Waste Organic Solvent Containing Propylene Glycol Monomethyl Ether Acetate (PGMEA)

PGMEA를 포함하는 폐유기용제의 정제

  • Yoon, Kyoung-Jin (Department of Environmental Engineering, Chungbuk National University) ;
  • Lee, Woong-Mok (Department of Environmental Engineering, Chungbuk National University) ;
  • Kwon, Oh-Hoon (Department of Environmental Engineering, Chungbuk National University) ;
  • Kim, Jae-Yong (Department of Environmental Engineering, Chungbuk National University)
  • Received : 2010.06.29
  • Accepted : 2010.08.30
  • Published : 2010.12.10
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Abstract

This study was performed to recycle Propylene Glycol Monomethyl Ether Acetate (PGMEA) from Liquid Crystal Display (LCD) industry emission as a waste organic solvent by using a multistage distillation column and tried to decide optimum reflux ratio. From the final experiment result, it was confirmed ; in case the sample A, the PGMEA purity is more than 98% and the moisture is less than 0.05%, on the other hand, in case the sample B, the PGMEA purity is more than 95% when the reflux ratio is 6 and the moisture is less than 0.01% (Refer to Table 1 for the contents of sample A and B). These values means fine level which can be adapted in the LCD manufacture, requiring more than 90% common purity of recycling level.

Liquid Crystal Display (LCD) 제조 공정에서 배출되는 폐유기용제에서 Propylene Glycol Monomethyl Ether Acetate (PGMEA)를 회수하여 재활용할 목적으로 다단계 증류탑을 이용하여 실험실적 규모의 증류 실험을 수행하여 최적 환류비를 결정하고자 하였다. 최종실험결과, 시료 A의 경우 PGMEA는 98% 이상, 수분 함량은 0.05% 이하이며, 시료 B의 경우 Reflux ratio를 6으로 한 경우 PGMEA 95% 이상, 수분 함량은 0.01% 이하이다(시료 A, B에 대한 내용은 Table 1에 명시함.). 이 값은 LCD 제조에 재활용할 수 있는 일반 수준인 90%보다 높은 수치로서 적용이 가능하다.

Keywords

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