화학공학소재연구정보센터
Korean Chemical Engineering Research, Vol.55, No.3, 341-352, June, 2017
부틸 아세테이트 합성을 위한 공비첨가제 사용 반회분식 반응증류
Entrainer-Enhanced Semi-Batch Reactive Distillation for Synthesis of Butyl Acetate
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초록
부틸 아세테이트는 반응증류탑에서 초산과 부탄올의 에스테르 교환반응에 의해 제조된다. 공비첨가는 반응영역에서 생성물인 물을 보다 효과적으로 분리할 수 있도록 하여, 반응증류탑의 성능을 향상시킨다. 중소 공장 서 회분식 공정은 연속공정에 비해 보다 유연하게 사용할 수 있다는 점에서 유리하다. 본 연구에서는 부틸아세테이트 성을 위한 회분식 반응증류 공정과 반회분식 반응증류 공정에 대하여 공정 모사 및 실험을 통하여 연구하였다. 공정 성능 향상을 위하여 공비첨가제 종류, 공정구조에 대하여 조사하였다. 또한 반회분식 반응 증류탑을 연속 운전하여 새로운 순환 운전 방법을 제시하였으며, 이 조업 전략을 사용하여 높은 생산성과 안정한 조업이 가능함을 보였다.
Butyl acetate is produced from acetic acid and butanol via an esterification reaction in a reactive distillation column. Entrainer can be used for efficient removal of produced water from the reaction region, leading to significant improvement of the column performance. Batch reactive distillation has clear advantages over continuous one in terms of flexibility and adaptability in a small plant. We studied batch and semi-batch reactive distillation processes through process simulation and pilot-scale experiments. We investigated process configuration and type of entrainer for improvement of the column performance and suggested a novel cyclic operation strategy using the semi batch reactive distillation column. The cyclic strategy was shown to give relatively high production rate and stable operation.
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