Exploring N-best solution space for heat integrated hydrogen regeneration network using sequential graph-theoretic approach |
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Affiliation: | 1. Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350 Kuching, Sarawak, Malaysia;2. Department of Chemical and Biological Engineering, Monash University, Melbourne, VIC 3800, Australia;3. Integrated Engineering, Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do 17104, Republic of Korea;4. Department of Computer Science and Systems Technology, University of Pannonia, 8200, Veszprém, Egyetem u. 10, Hungary;5. Széchenyi István University, 9026 Gy?r, Egyetem tér 1, Hungary |
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Abstract: | To achieve the ever-stringent sustainable goals, this paper aims to synthesize a heat integrated hydrogen regeneration network (HIHRN) using a graph-theoretic-based sequential method. Firstly, the optimal and near-optimal structures for a hydrogen regeneration networks (HRN) are determined using P-graph model with consideration of both impurity and pressure constraints. These networks are then used as inputs in P-HENS software to generate a list of optimal and near-optimal heat exchanger network (HEN) structures. An eight source and sink problem is used to demonstrate the effectiveness of the proposed method. There are 199,677 feasible HIHRN structures identified, while the 6 near-optimal solutions which are within 0.05% tolerance of the optimal network cost (i.e., less than 33.04 M$/y) are presented together with the top four HEN designs that can offer comparable costs (~115,500 $/y). In addition, the impacts of pressure swing adsorber (PSA) pressure drop consideration and minimum temperature difference on the optimal design are also presented. |
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Keywords: | Oil refinery Hydrogen network Heat integration Process optimization P-graph P-HENS ABB" },{" #name" :" keyword" ," $" :{" id" :" pc_u2OPuz4P5Y" }," $$" :[{" #name" :" text" ," _" :" Accelerated branch and bound CCR" },{" #name" :" keyword" ," $" :{" id" :" pc_DuxVZS9elE" }," $$" :[{" #name" :" text" ," _" :" Continuous catalytic reformer CHNT" },{" #name" :" keyword" ," $" :{" id" :" pc_P7qRCP1eqp" }," $$" :[{" #name" :" text" ," _" :" Cracked naptha hydrotreater DHT" },{" #name" :" keyword" ," $" :{" id" :" pc_NsTfDbo5o0" }," $$" :[{" #name" :" text" ," _" :" Diesel hydrotreater HC" },{" #name" :" keyword" ," $" :{" id" :" pc_ydrHtGbw9b" }," $$" :[{" #name" :" text" ," _" :" Hydrocracker HEN" },{" #name" :" keyword" ," $" :{" id" :" pc_onu1o46Fsg" }," $$" :[{" #name" :" text" ," _" :" Heat exchanger network HIHRN" },{" #name" :" keyword" ," $" :{" id" :" pc_x4X6eCvAQl" }," $$" :[{" #name" :" text" ," _" :" Heat integrated hydrogen regeneration network HIWN" },{" #name" :" keyword" ," $" :{" id" :" pc_7q49M3U3Yj" }," $$" :[{" #name" :" text" ," _" :" Heat integrated water network HIWRN" },{" #name" :" keyword" ," $" :{" id" :" pc_PdTsFI4KB5" }," $$" :[{" #name" :" text" ," _" :" Heat integrated water regeneration network HN" },{" #name" :" keyword" ," $" :{" id" :" pc_l9b2V6zVaS" }," $$" :[{" #name" :" text" ," _" :" Hydrogen network HNDAO" },{" #name" :" keyword" ," $" :{" id" :" pc_dGXo4CRYC0" }," $$" :[{" #name" :" text" ," _" :" Hydrogen network design and optimization HNR" },{" #name" :" keyword" ," $" :{" id" :" pc_vEIYUHdUob" }," $$" :[{" #name" :" text" ," _" :" Hydrogen network retrofit HRN" },{" #name" :" keyword" ," $" :{" id" :" pc_HiaFOfXlI2" }," $$" :[{" #name" :" text" ," _" :" Hydrogen regeneration network IS4" },{" #name" :" keyword" ," $" :{" id" :" pc_0NGDNYckua" }," $$" :[{" #name" :" text" ," _" :" C4 Isomerization JHT" },{" #name" :" keyword" ," $" :{" id" :" pc_VBoZIEwCYl" }," $$" :[{" #name" :" text" ," _" :" Jet fuel hydrotreater LP" },{" #name" :" keyword" ," $" :{" id" :" pc_xTl27LQ2Tx" }," $$" :[{" #name" :" text" ," _" :" Linear programming MP" },{" #name" :" keyword" ," $" :{" id" :" pc_J5VnYSroMP" }," $$" :[{" #name" :" text" ," _" :" Mathematical programming MILP" },{" #name" :" keyword" ," $" :{" id" :" pc_OKDLqIbRJq" }," $$" :[{" #name" :" text" ," _" :" Multiple integer nonlinear programming PI" },{" #name" :" keyword" ," $" :{" id" :" pc_cXGLUCgSyL" }," $$" :[{" #name" :" text" ," _" :" Process integration PNS" },{" #name" :" keyword" ," $" :{" id" :" pc_bzRLY1Jouc" }," $$" :[{" #name" :" text" ," _" :" Process network synthesis PSA" },{" #name" :" keyword" ," $" :{" id" :" pc_xwGuma3Q2z" }," $$" :[{" #name" :" text" ," _" :" Pressure swing adsorber RCN" },{" #name" :" keyword" ," $" :{" id" :" pc_Rx1swFEsgC" }," $$" :[{" #name" :" text" ," _" :" Resource conservation network TAC" },{" #name" :" keyword" ," $" :{" id" :" pc_GAik8l1Yfa" }," $$" :[{" #name" :" text" ," _" :" Total annual cost WRN" },{" #name" :" keyword" ," $" :{" id" :" pc_EyO3KQt53s" }," $$" :[{" #name" :" text" ," _" :" Water regeneration network |
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