[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.9713/kcer.2015.53.2.181

Process Optimization Using Regression Analysis of Distillation Processes for the Recovery of Propylene Glycol Monomethyl Ether Acetate (PGMEA) Containing Waste Organic Solvent

Choi, Yong-Seok (Department of Chemical and Biomolecular Engineering, Chonnam National University)
Byun, Hun-Soo (Department of Chemical and Biomolecular Engineering, Chonnam National University)

Publication Information

Korean Chemical Engineering Research / v.53, no.2, 2015 , pp. 181-192 More about this Journal

Abstract

The aim of this study is to obtain optimum process condition for using two tower distribution to recycle the waste Propylene Glycol Monomethyl Ether Acetate (PGMEA) that is formed after washing LCD. The optimum process condition for the content of PGMEA, which is dependent variable, at 1st distillation was calculated according to Bottom temperature (BTM temperature), Reflux amount, Feed amount, Feed temperatures, and the optimum process conditions and optimum factors for the content of PGMEA at 2nd distillation according to Bottom temperature (BTM temperature), Reflux amount, Feed amount, Feed temperatures. At 1st distillation, Reflux amount, Feed amount, and Feed temperature are significant variables. However, it is found that the BTM temperature range is not significant in the range of process condition used in this study. The optimum process conditions are based on $5700{\ell}$ of Feed amount, $2500{\ell}$ of Reflux amount, $165^{\circ}C$ of BTM temperature, and $130^{\circ}C$ of Feed temperature. For the this condition, the predicted content of PGMEA was calculated as 92.12~94.62%. Significant factors at 2nd distillation are Reflux amount, Feed amount, and BTM temperature. Multicollinearity is between Reflux amount and BTM temperature. BTM was omitted in the multiple regression equation because there is a strong positive correlation between Reflux amount and BTM temperature. Base on $199^{\circ}C$ of BTM temperature, The optimum process conditions are based on $4275{\ell}$ of Feed amount, $6200{\ell}$ of Reflux amount and $130^{\circ}C$ of Feed temperature. In this condition, the predicted content of PGMEA was calculated as 99.0~99.5%.

Keywords

Multiple Regression Analysis; Propylene Glycol Monomethyl Ether Acetate; Distillation Processes; Optimum Process Conditions; Waste Organic Solvent;

Citations & Related Records

Times Cited By KSCI : 2 (Citation Analysis)

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