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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 韓明完
- 발행연도
- 2013
- 저작권
- 충남대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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The kinetics of the transesterification of dimethyl terephthalate (DMT) with ethylene glycol (EG) was studied in a batch reactor. Bishydroxyethyl terephthalate (BHET), which is poly(ethylene terephthalate) (PET) monomer, can be produced by the transesterification reaction. Zinc acetate was used as a catalyst.
Previous kinetic studies was carried out in a semi-batch reactor where generated methanol was removed so that reverse reactions were not considered in the kinetic expressions, resulting in inaccuracy of the kinetic model. Mathematical models of a batch reactor for the tranesterification reaction were developed and used to characterize the reaction kinetics and the composition distribution of the reaction products. More accurate models than previous ones were obtained and found to have a good agreement between model predictions and experimental data. Reactive distillation process was proposed to improve production yield, and to reduce energy consumption and capital cost. Aspen Plus was used to simulate the reactive distillation process with kinetic data obtained experimentally. The effect of number of stage, feeding stage, holdup, reflux ratio and molar ratio on process yield and energy efficiency were examined.
Previous kinetic studies was carried out in a semi-batch reactor where generated methanol was removed so that reverse reactions were not considered in the kinetic expressions, resulting in inaccuracy of the kinetic model. Mathematical models of a batch reactor for the tranesterification reaction were developed and used to characterize the reaction kinetics and the composition distribution of the reaction products. More accurate models than previous ones were obtained and found to have a good agreement between model predictions and experimental data. Reactive distillation process was proposed to improve production yield, and to reduce energy consumption and capital cost. Aspen Plus was used to simulate the reactive distillation process with kinetic data obtained experimentally. The effect of number of stage, feeding stage, holdup, reflux ratio and molar ratio on process yield and energy efficiency were examined.
목차
1. 서 론 12. 이 론 42.1 에스테르 교환 반응 42.2 반응증류 63. 실 험 73.1 실험재료 73.2 실험장치 73.3 실험방법 94. 결과 및 고찰 104.1. 반응온도, 반응시간, EG/DMT 몰 비율의 영향 104.2. 역반응을 고려한 MHET 및 BHET 생성 반응모델 134.3. 역반응을 고려한 메틸에스터 반응모델 205. BHET 생산 공정모사 265.1. 회분식 반응증류 265.2. 반응증류 285.3. 전산모사 285.4. 최적화 325.5. 공정변수의 영향 355.5.1 증류탑의 총 단수의 영향 355.5.2 원료 공급 단의 영향 385.5.3 Hold up의 영향 415.5.3 환류비의 영향 445.5.4 EG/DMT의 몰 비의 영향 476. 결 론 54NOMENCLATURES 56REFERENCES 57ABSTRACT 60
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