Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Optimization of Plain Jacked Vessel Design in Adhesive Production Process Using Computational Fluid Dynamics

Computational Fluid Dynamics를 활용한 점/접착 생산 공정 내 Jacketed Vessel 설계 최적화

  • Joo, Chonghyo (Green Materials and Processes R&D Group, Korea Institute of International Technology) ;
  • Park, Hyundo (Green Materials and Processes R&D Group, Korea Institute of International Technology) ;
  • Cho, Hyungtae (Green Materials and Processes R&D Group, Korea Institute of International Technology) ;
  • Kim, Junghwan (Green Materials and Processes R&D Group, Korea Institute of International Technology)
  • 주종효 (한국생산기술연구원 친환경재료공정연구그룹) ;
  • 박현도 (한국생산기술연구원 친환경재료공정연구그룹) ;
  • 조형태 (한국생산기술연구원 친환경재료공정연구그룹) ;
  • 김정환 (한국생산기술연구원 친환경재료공정연구그룹)
  • Received : 2020.09.07
  • Accepted : 2020.09.28
  • Published : 2020.12.10
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Abstract

Blending process of adhesive production has a cooling process to cool down the temperature of the solution which was heated up to 76 ℃ with a mineral insulated (MI) cable by 30 ℃ at room temperature. Using a MI cable in the adhesive production process makes the production inefficient because it takes about 10 h for the cooling process. If a jacketed vessel is used instead of the MI cable, it would shorten the cooling downtime without any additional cooling system by using cold water. However, there are various types of jacketed vessels, and thus the most suitable type should be found before set up. In this study, we designed the optimized jacketed vessel for the adhesive production process by calculating the cooling downtime, which impacts production efficiency, as a function of the jacket types using computational fluid dynamics. As a result, the cooling performance of the plain jacket was 32.7% superior to that of the half-pipe coil jacket with the same height. In addition, the plain jacket with 60% spiral baffle reduced the cooling downtime and operating time by 80.4% and 25.1%, respectively.

점/접착제 생산 공정은 배합 과정에서 mineral insulated (MI) cable을 통해 내부 용액을 76 ℃까지 가열 및 혼합 후 제품 출하를 위해 30 ℃까지 상온 냉각을 진행한다. MI cable을 이용한 반응기의 경우, 냉각시간이 평균 10 h 소요되어 생산효율이 낮은 문제점이 있지만, jacketed vessel을 설치하면 위의 문제를 효과적으로 해결할 수 있다. 그러나 jacketed vessel의 종류가 다양해 jacket을 설치하기 전, 배합 공정조건에 적합한 종류를 찾아야 한다. 본 연구에서는 생산효율에 영향을 주는 냉각시간을 최소화하기 위해 computational fluid dynamics (CFD)를 이용하여 jacket 종류에 따른 냉각시간을 비교해 공정에 적합한 jacketed vessel 모델을 개발하고, 점/접착제 생산 공정에 최적화된 jacketed vessel을 설계하였다. 연구 결과, jacket의 높이가 같을 때, half-pipe coil jacket보다 plain jacket의 냉각 성능이 32.7% 더 우수하였고, plain jacket에 60% spiral baffle을 설치하여 냉각 공정에 이용할 경우 냉각시간을 80.4%, 작업시간을 25.1% 단축 가능하다.

Keywords

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