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Received March 28, 2014
Accepted June 5, 2014
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유틸리티 네트워크와 수소 공급망 통합 네트워크 설계를 위한 결정론적 최적화 모델 개발
Development of a Deterministic Optimization Model for Design of an Integrated Utility and Hydrogen Supply Network
1포항공과대학교 화학공학과, 790-784 경북 포항시 남구 효자동 산31 2위스콘신매디슨대학교 화학생물공학과, 53706 위스콘신주 매디슨시 3포항공과대학교 엔지니어링대학원, 790-784 경북 포항시 남구 효자동 산31
1Department of Chemical Engineering, POSTECH, San 31 Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, Korea 2Department of Chemical and Biological Engineering, University of Wisconsin-Madison Madison, WI 53706, USA, Korea 3Graduate School of Engineering Mastership, POSTECH, San 31 Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, Korea
iblee@postech.ac.kr
Korean Chemical Engineering Research, October 2014, 52(5), 603-612(10), 10.9713/kcer.2014.52.5.603 Epub 1 October 2014
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Abstract
대규모 산업 단지 내에는 다양한 네트워크가 형성되어 있다. 각각의 네트워크들은 네트워크를 구성하는 요소들이 필요로 하는 물질의 생산 및 수송을 통하여 물질의 수요를 충족시킨다. 네트워크 자체적으로 직접 생산을 통하여 각 공장들이 필요로 하는 물질의 수요를 충족시키기도 하며 수요량의 변화나 경제적 요소들로 인하여 네트워크 외부에서 필요로 하는 물질을 구매하여 네트워크 내에서 수송하기도 한다. 특히나 유틸리티 네트워크와 수소 네트워크는 대규모 산업 단지의 대표적인 네트워크들이며 이러한 네트워크들의 비용적 절감 및 네트워크 구성의 최적화와 관련된 많은 연구들이 수행되어 왔다. 하지만 두 네트워크를 연결하여 통합된 네트워크 모델을 구축하여 최적화를 진행한 연구는 진행되어 오지 않았다. 본 논문에서는 유틸리티 네트워크에서 발생되는 여분의 스팀을 수증기 메탄 개질 공정의 원료로 사용하여 수소를 생산한 후, 생산된 수소를 수소 네트워크에 주입하여 수소 네트워크의 수소 수요량을 충족시키는 모델을 개발하였다. 제시된 모델은 유틸리티 네트워크의 유틸리티 수요량과 수소 네트워크의 수소 수요량을 모두 충족시키면서 통합된 네트워크 모델의 최적 설계 및 네트워크 구성도를 결정할 수 있게 하고, 요구되는 전체 비용을 계산 가능하게 한다. 본 연구에서 제시한 모델의 타당성을 평가하기 위하여 국내 최대 규모의 대규모 석유 화학 산업단지를 가지고 있는 여수 석유 화학 단지를 대상으로 사례를 적용해 보았으며 이 사례 연구를 통하여 얻은 결과는 기존의 유틸리티 네트워크와 수소 네트워크를 개별적으로 연구한 결과와 비교하여 더 최적의 결정을 제시할 것이다.
Lots of networks are constructed in a large scale industrial complex. Each network meet their demands through production or transportation of materials which are needed to companies in a network. Network directly produces materials for satisfying demands in a company or purchase form outside due to demand uncertainty, financial factor, and so on. Especially utility network and hydrogen network are typical and major networks in a large scale industrial complex. Many studies have been done mainly with focusing on minimizing the total cost or optimizing the network structure. But, few research tries to make an integrated network model by connecting utility network and hydrogen network In this study, deterministic mixed integer linear programming model is developed for integrating utility network and hydrogen network. Steam Methane Reforming process is necessary for combining two networks. After producing hydrogen from Steam-Methane Reforming process whose raw material is steam vents from utility network, produced hydrogen go into hydrogen network and fulfill own needs. Proposed model can suggest optimized case in integrated network model, optimized blueprint, and calculate optimal total cost. The capability of the proposed model is tested by applying it to Yeosu industrial complex in Korea. Yeosu industrial complex has the one of the biggest petrochemical complex and various papers are based in data of Yeosu industrial complex. From a case study, the integrated network_x000D_
model suggests more optimal conclusions compared with previous results obtained by individually researching utility network and hydrogen network.
Keywords
References
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