Fuzzy optimization design of multicomponent refinery hydrogen network  

作　　者：Chun Deng Xuantong Lu Qixin Zhang Jian Liu Jui-Yuan Lee Xiao Feng 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering and Environment,China University of Petroleum,Beijing 102249,China [2]PetroChina Daqing Petrochemical Company,Daqing 163000,China [3]Department of Chemical Engineering and Biotechnology,National Taipei University of Technology,Taipei 10608,China [4]School of Chemical Engineering&Technology,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第8期125-139,共15页中国化学工程学报（英文版）

基　　金：the National Natural Science Foundation of China (21878328);Natural Science Foundation of Beijing (2212016);Beijing Science and Technology Program, China (Z181100005118010)

摘　　要：Hydrogen and light hydrocarbon components are essential resources of the refinery.The optimization of the refinery hydrogen system and recovery of the light hydrocarbon components contained in the gas streams are key strategies to reduce the operating costs for sustainable development.Many research efforts have been focused on the optimization of single impurity hydrogen network,and the flowrates of the hydrogen sources and sinks are assumed to be constant.However,their flowrates vary along with the quality of crude oil and refinery processing plans.A general superstructure of multicomponent refinery hydrogen network is proposed,which considers four components,namely H_(2),H_(2)S,CH_(4) and C_(2+),as well as the flowrate variations of hydrogen source and hydrogen sink.The mathematical model based on the superstructure is developed with objective functions,including the minimization of total annualized cost and the maximization of overall satisfaction of the hydrogen network.Moreover,the model considers the removal of hydrogen sulfide and the recovery of light hydrocarbon components(i.e.,C_(2+))in the optimization.To verify the applicability of the proposed mathematical model,a simplified industrial case study with four scenarios is solved.The optimization results show that the economic benefit can be maximized by considering both the direct reuse of gas streams from high-pressure separator(HP gas stream)and from low-pressure separator(LP gas stream)and the recovery of the light hydrocarbon streams.The fuzzy optimization method can be used to guide the optimal design of the refinery hydrogen system with multi-period variable flowrates.

关 键 词：Hydrogen network Mathematical programming MULTICOMPONENT Fuzzy optimization Light hydrocarbon recovery 

分 类 号：TE68[石油与天然气工程—油气加工工程] TQ116.2[化学工程—无机化工]