Optimizing the Heat Exchanger Network of a Steam Reforming System

Mads Pagh Nielsen, Anders Risum Korsgaard, Søren Knudsen Kær

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskning


Proton Exchange Membrane (PEM) based combined heat and power production systems are highly integrated energy systems. They may include a hydrogen production system and fuel cell stacks along with post combustion units optionally coupled with gas turbines. The considered system is based on a natural gas steam reformer along with gas purification reactors to generate clean hydrogen suited for a PEM stack. The temperatures in the various reactors in the fuel processing system vary from around 1000°C to the stack temperature at 80°C. Furthermore, external heating must be supplied to the endothermic steam reforming reaction and steam must be generated. The dependence of the temperature profiles on conversion in shift reactors for gas purification is also significant. The optimum heat integration in the system is thus imperative in order to minimize the need for hot and cold utilities. A rigorous 1D stationary numerical system model was used and process integration techniques for optimizing the heat exchanger network for the reforming unit are proposed. Objective is to minimize the system cost. Keywords: Fuel cells; Steam Reforming; Heat Exchanger Network (HEN) Synthesis; MINLP.
TitelProceedings of the SIMS 2004 Conference
Forlag<Forlag uden navn>
ISBN (Trykt)8774753169
StatusUdgivet - 2004
BegivenhedThe 45th Conference on Simulation and Modelling (SIMS 2004) - København, Danmark
Varighed: 23 sep. 200424 sep. 2004
Konferencens nummer: 45


KonferenceThe 45th Conference on Simulation and Modelling (SIMS 2004)

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  • Citationsformater

    Nielsen, M. P., Korsgaard, A. R., & Kær, S. K. (2004). Optimizing the Heat Exchanger Network of a Steam Reforming System. I Proceedings of the SIMS 2004 Conference (s. 181-188). <Forlag uden navn>.