수학적 모델과 폭발사고 모델링을 통한 산화에틸렌 공정의 설비 배치 최적화에 관한 연구 = Study for the Plant Layout Optimization for the Ethylene Oxide Process based on Mathematical and Explosion Modeling

다국어 초록 (Multilingual Abstract)

In most plant layout optimization researches, MILP(Mixed Integer Linear Programming) problems, in which the objective function includes the costs of pipelines connecting process equipment and cost associated with safety issues, have been employed. Based on these MILP problems, various optimization solvers have been applied to investigate the optimal solutions. To consider safety issues on the objective function of MILP problems together, the accurate information about the impact and the frequency of potential accidents in a plant should be required to evaluate the safety issues. However, it is really impossible to obtain accurate information about potential accidents and this limitation may reduce the reliability of a plant layout problem. Moreover, in real industries such as plant engineering companies, the plant layout is previously fixed and the considerations of various safety instruments and systems have been performed to guarantee the plant safety. To reflect these situations, the two step optimization problems have been designed in this study. The first MILP model aims to minimize the costs of pipelines and the land size as complying sufficient spaces for the maintenance and safety.
After the plant layout is determined by the first MILP model, the optimal locations of blast walls have been investigated to maximize the mitigation impacts of blast walls. The particle swarm optimization technique, which is one of the representative sampling approaches, is employed throughout the consideration of the characteristics of MILP models in this study. The ethylene oxide plant is tested to verify the efficacy of the proposed model.

참고문헌 (Reference)

1 임사환, "VCE에 의한 건물피해예측에 관한 연구" 한국안전학회 22 (22): 65-70, 2007

2 D. H. Lee, "The Plant Layout Optimization Considering the Operating Conditions" 50 (50): 568-576, 2017

3 KOSHA, "Technical Guidelines for the Safety of Ethylene Oxide Handling" 2018

4 U.S. Government Printing Office, "Protection of Environment" 2008

5 박평재, "PSO 최적화 기법을 이용한 Ethylene Oxide Plant 배치에 관한 연구" 한국안전학회 30 (30): 32-37, 2015

6 C. M. L. Castell, "Optimisation of Process Plant Layout using Genetic Algorithms" 22 : 993-996, 1998

7 Kyungtae Park, "Optimal multi-floor plant layout with consideration of safety distance based on mathematical programming and modified consequence analysis" 한국화학공학회 28 (28): 1009-1018, 2011

8 K. Han, "Optimal Layout of a Chemical Process Plant to Minimize the Risk to Humans" 22 : 1146-1155, 2013

9 J. Li, "Optimal Blast Wall Layout Design to Mitigate Gas Dispersion and Explosion on a Cylindrical FLNG Platform" 49 : 481-492, 2017

10 M. Schwaab, "Nonlinear Parameter Estimation through Particle Swarm Optimization" 63 (63): 1542-1552, 2008

11 양진석, "LNG 액화 플랜트 배치 최적화를 통한 투자비 절감에 관한 연구" 한국화학공학회 57 (57): 51-57, 2019

12 S. Høiset, "Flixborough Revisited - An Explosion Simulation Approach" 77 : 1-9, 2000

13 L. G. Papageorgious, "Continuousdomain Mathematical Models for Optimal Process Plant Layout" 37 (37): 3631-3639, 1998

14 F. D. Penteado, "An MINLP Approach for Safe Process Plant Layout" 35 (35): 1354-1361, 1996

15 D. I. Patisiatzis, "An MILP Approach to Safe Process Plant Layout" 82 (82): 579-586, 2004