Modeling, synthesis and optimization of heat exchanger networks. Application to fuel processing systems for PEM fuel cells

Oliva, Diego Gabriel; Francesconi, Javier A.; Mussati, Miguel C.; Aguirre, Pío A.

doi:10.1016/j.ijhydene.2011.04.097

Cited by 17 publications

(10 citation statements)

References 35 publications

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“…It must be kept at a very low concentration of the produced hydrogen that feeds the Fuel Cell because its membrane is sensitive to be poisoned by CO. Additionally, the heat integration must be considered to improve the efficiency of the hydrogen production via bio-ethanol. Some interesting ideas about a heat exchangers network design, able to guarantee maximum heat recovery and provide the best efficiency, was recently presented in [3].…”

Section: Introductionmentioning

confidence: 99%

Plant-wide control design for fuel processor system with PEMFC

Degliuomini

Zumoffen

Basualdo

2012

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Plant-wide control design for fuel processor system with PEMFC

Degliuomini

Zumoffen

Basualdo

2012

International Journal of Hydrogen Energy

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“…Nevertheless, the problem rapidly becomes intractable due to the large number of variables (both continuous and integer) and equations. Despite this problem, different researchers have solved relatively complex problems following this approach (de la Cruz et al, 2014;Martelli et al, 2017;Oliva et al, 2011;Onishi et al, 2014a;Vázquez-Ojeda et al, 2013;. To alleviate that problem, an alternative is to consider only the thermal effects (heat integration) without the design of a specific network; in other words, including in the optimization only the utilities and their nature (e.g., low, medium or high pressure steam) but not the investment costs of the heat exchangers network.…”

Section: Nomenclaturementioning

confidence: 99%

Disjunctive model for the simultaneous optimization and heat integration with unclassified streams and area estimation

Quirante

Grossmann

2018

Computers & Chemical Engineering

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“…The application of the here proposed model-based optimization approach has been successfully applied by the authors in other processes such as single-purpose seawater desalination plants [34][35][36], dual-purpose desalination plants [37,38], combined cycle power plants [39,40], amine-based CO 2 capture processes [41,42], biological wastewater treatment plants [43,44], real-time optimization in energy systems [45], liquid biofuel processors for H 2 production coupled to stationary fuel cells [46,47] and its associated heat exchanger network for optimal energy integration [48]. For instance, based on process models, this approach allowed to find a new cost-effective configuration for multi-stage flash desalination processes [35,36], which differ from the conventional configuration in the locations of distillate, recycle, and discharge streams.…”

Section: Sensitivity Of the Optimal Solution To The H 2 Product Puritmentioning

confidence: 99%

Optimal Design of a Two-Stage Membrane System for Hydrogen Separation in Refining Processes

Arias¹,

Scenna

et al. 2018

Processes

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This paper fits into the process system engineering field by addressing the optimization of a two-stage membrane system for H 2 separation in refinery processes. To this end, a nonlinear mathematical programming (NLP) model is developed to simultaneously optimize the size of each membrane stage (membrane area, heat transfer area, and installed power for compressors and vacuum pumps) and operating conditions (flow rates, pressures, temperatures, and compositions) to achieve desired target levels of H 2 product purity and H 2 recovery at a minimum total annual cost. Optimal configuration and process design are obtained from a model which embeds different operating modes and process configurations. For instance, the following candidate ways to create the driving force across the membrane are embedded: (a) compression of both feed and/or permeate streams, or (b) vacuum application in permeate streams, or (c) a combination of (a) and (b). In addition, the potential selection of an expansion turbine to recover energy from the retentate stream (energy recovery system) is also embedded. For a H 2 product purity of 0.90 and H 2 recovery of 90%, a minimum total annual cost of 1.764 M$·year −1 was obtained for treating 100 kmol·h −1 with 0.18, 0.16, 0.62, and 0.04 mole fraction of H 2 , CO, N 2 , CO 2 , respectively. The optimal solution selected a combination of compression and vacuum to create the driving force and removed the expansion turbine. Afterwards, this optimal solution was compared in terms of costs, process-unit sizes, and operating conditions to the following two sub-optimal solutions: (i) no vacuum in permeate stream is applied, and (ii) the expansion turbine is included into the process. The comparison showed that the latter (ii) has the highest total annual cost (TAC) value, which is around 7% higher than the former (i) and 24% higher than the found optimal solution. Finally, a sensitivity analysis to investigate the influence of the desired H 2 product purity and H 2 recovery is presented. Opposite cost-based trade-offs between total membrane area and total electric power were observed with the variations of these two model parameters. This paper contributes a valuable decision-support tool in the process system engineering field for designing, simulating, and optimizing membrane-based systems for H 2 separation in a particular industrial case; and the presented optimization results provide useful guidelines to assist in selecting the optimal configuration and operating mode.

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Modeling, synthesis and optimization of heat exchanger networks. Application to fuel processing systems for PEM fuel cells

Cited by 17 publications

References 35 publications

Plant-wide control design for fuel processor system with PEMFC

Plant-wide control design for fuel processor system with PEMFC

Disjunctive model for the simultaneous optimization and heat integration with unclassified streams and area estimation

Optimal Design of a Two-Stage Membrane System for Hydrogen Separation in Refining Processes

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