Simulation and optimization of hydrogen production by steam reforming of natural gas for refining and petrochemical demands in Lebanon

Chehade, Aya M. El Hajj; Daher, Elie A.; Assaf, Jean Claude; Riachi, Bassam; Hamd, Wael

doi:10.1016/j.ijhydene.2020.09.077

Cited by 48 publications

(8 citation statements)

References 45 publications

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“…The reformer pressure was decided based on the normal pressures at which hydrogen is to be stored in the plant and the pressure of the natural gas. Also, the minimum operat- ing temperature of MTS should be maintained between 313 and 340 °C by controlling the MTS minimum temperature to 220-250 °C as in the plant conventional operation to ensure maximum CO conversion and avoid the undesired methanation reaction at temperatures lower than 220 °C [20].…”

Section: Process Optimizationmentioning

confidence: 99%

“…Farsi and co-workers [19] reported that applying the optimal operating conditions on a small-capacity hydrogen production unit increases the hydrogen production capacity by about 22.7 %. Hamad and co-workers [20] performed a steady-state simulation and optimization of a complete natural gas steam reforming process on Aspen HYSYS and MATLAB in terms of thermodynamic parameters and energy consumption. Similar results were observed using both software packages.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of a Natural Gas Steam Reforming Plant for Hydrogen Production Optimization

Salem¹,

Shoaib

Ibrahim

2021

Chem Eng & Technol

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A simulation study to predict and optimize a natural gas steam reforming plant in Suez was performed. The developed model was used to generate performance data that would map the relation between atthe operating variables and hydrogen productivity. A single objective optimization problem was then formulated to maximize hydrogen production in the subunits: hydrocarbon prereformer, steam methane reformer, and the medium‐temperature water‐gas‐shift reactor. The process temperature and pressure for the three subunits, total plant flow rate and total superheated steam flow rate were selected as decision variables. A good agreement was found between simulation results and plant data at steady‐state conditions in terms of hydrogen yield and chemical composition. The developed mathematical model for hydrogen productivity correctly predicts the effect of relevant process parameters.

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Section: Process Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of a Natural Gas Steam Reforming Plant for Hydrogen Production Optimization

Salem¹,

Shoaib

Ibrahim

2021

Chem Eng & Technol

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“…Finalmente, se espera que, en un futuro, también se tengan mayores investigaciones en los métodos de producción de hidrógeno no tan comunes, puesto a que pueden ser una alternativa en términos de economía y ecoeficiencia, para el desarrollo de los métodos tradicionales (124) . Se tiene de ellos cierta perspectiva, en el uso de algunos ciclos híbridos de separación de agua, como los métodos fototermoquímico, fotoelectroquímico y radiotermoquímico, además de los procesos de hidrogasificación del carbón con base nuclear, y reformado de gas natural con base nuclear, como dos métodos potenciales para la generación de hidrógeno a gran escala (125) . También se han mencionado procesos de reformado de combustible solar, para la generación de hidrógeno con una aplicación potencial a escalas de producción pequeñas e intermedias.…”

Section: Perspectivas Y Futuras Investigacionesunclassified

Principales Rutas en la Producción de Hidrógeno

Brijaldo

Castillo

Pérez

2021

inycomp

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Las características físicas y químicas del hidrógeno lo han convertido en un vector energético prometedor con grandes aplicaciones en celdas de combustibles, así como materia prima para la participación en diversos procesos químicos a nivel de industrial. Una de las fuentes renovables de energía utilizada para la obtención de hidrógeno es la biomasa. Se han empleado varias moléculas modelo de biomasa para la generación de hidrógeno, las cuales incluyen principalmente alcoholes, carbohidratos, ácidos carboxílicos, alcanos entre otras. Estas moléculas son transformadas mediante rutas termoquímicas, bioquímicas, fotoquímicas, electroquímicas, catalíticas, etc., con el objetivo de alcanzar el mayor rendimiento a hidrógeno. En cada una de ellas, numerosas condiciones de reacción son utilizadas, sustratos y catalizadores son empleados. En esta revisión se abordarán algunos de los tópicos anteriormente mencionados y se vislumbraran algunas prospectivas y futuras investigaciones que pueden llevarse a acabo en el campo de la generación de hidrógeno.

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“…The system simulation shows a maximum overall efficiency of 58% at 5 bar and 80 °C of optimum conditions. In contrast, Chehade et al [ 16 ] simulated and optimized natural gas steam‐reforming plants for hydrogen production. The results show 77.5% less energy consumption while optimizing the process parameters.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Methanol Reforming Parameters for Enhanced Hydrogen Selectivity in an Aspen Hysys Simulator using Response Surface Methodology

2023

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Hydrogen is the prominent fuel for a nation's industrial and infrastructural development. Hydrogen fuel fulfills the energy requirement and reduces environmental pollution concerns. Hence, every country is looking for efficient and greener hydrogen production technologies. Herein, a simulation model of a methanol‐water (as feed) reformer is developed, and the effects of reaction temperature (RT), reactor pressure (RP), and methanol‐to‐water (M‐to‐W) ratio are investigated. In contrast, the optimal conditions for hydrogen selectivity (HS) and feed conversion percentage (FCP) are determined using response surface methodology. Results show a significant effect of the M‐to‐W molar ratio in the range of 0.9 and 1.35, whereas higher RT has a good affinity for higher HS and FCP. The regression analysis shows R2 values of 0.9877 and 0.9803 for HC and FCP, which are close to unity. Hence, both experimental (and simulated) and predicted values have better correspondence with each other. In contrast, the optimal HS and FCP of 84.81% and 95.71% are observed at 328 °C RT, 2.6 atm. RP, and 1.34 M‐to‐W molar ratio, respectively. Therefore, the present simulation and optimization provide results that may help to enhance the hydrogen production percentage in commercialized plants.

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Simulation and optimization of hydrogen production by steam reforming of natural gas for refining and petrochemical demands in Lebanon

Cited by 48 publications

References 45 publications

Simulation of a Natural Gas Steam Reforming Plant for Hydrogen Production Optimization

Simulation of a Natural Gas Steam Reforming Plant for Hydrogen Production Optimization

Principales Rutas en la Producción de Hidrógeno

Optimizing Methanol Reforming Parameters for Enhanced Hydrogen Selectivity in an Aspen Hysys Simulator using Response Surface Methodology

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