Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 67, Issue -, Pages 160-170Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2012.11.001
Keywords
Dynamic model; Natural gas processing; Steam methane reforming; Hydrogen membrane reforming
Categories
Funding
- BigCO2 project
- CCRET project under the strategic Norwegian research program Climit
- Statoil
- GE Global Research
- Statkraft
- Aker Clean Carbon
- Shell
- TOTAL
- ConocoPhillips
- ALSTOM
- Research Council of Norway [178004/I30, 176059/I30]
- Gassnova [182070]
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This paper describes a distributed mechanistic dynamic model of a hydrogen membrane reformer unit (HMR) used for methane steam reforming. The model is based on a square channel monolith structure concept, where air flows adjacent to a mix of natural gas and water distributed in a chess pattern of channels. Combustion of hydrogen gives energy to the endothermic steam reforming reactions. The model is used for both steady state and dynamic analyses. It therefore needs to be computationally attractive, but still include enough complexity to study the important steady state and dynamic features of the process. Steady-state analysis of the model gives optimum for the steam to carbon and steam to oxygen ratios, where the conversion of methane is 92% and the hydrogen used as energy for the endothermic reactions is 28% at the nominal optimum. The dynamic analysis shows that non-linear control schemes may be necessary for satisfactory control performance. (C) 2012 Elsevier Ltd. All rights reserved.
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