Modeling of nickel-based hydrotalcite catalyst coated on heat exchanger reactors for CO2 methanation

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Modeling of nickel-based hydrotalcite catalyst coated on heat exchanger reactors for CO2 methanation. / Vazquez, Francisco Vidal; Kihlman, Johanna; Mylvaganam, Ajenthan; Simell, Pekka; Koskinen-Soivi, Mari-Leena; Alopaeus, Ville.

In: Chemical Engineering Journal, Vol. 349, 01.10.2018, p. 694-707.

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Vazquez, Francisco Vidal ; Kihlman, Johanna ; Mylvaganam, Ajenthan ; Simell, Pekka ; Koskinen-Soivi, Mari-Leena ; Alopaeus, Ville. / Modeling of nickel-based hydrotalcite catalyst coated on heat exchanger reactors for CO2 methanation. In: Chemical Engineering Journal. 2018 ; Vol. 349. pp. 694-707.

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@article{9216c349c91242efa832d2ce56bb128f,
title = "Modeling of nickel-based hydrotalcite catalyst coated on heat exchanger reactors for CO2 methanation",
abstract = "This study presents the kinetic modeling of CO2 methanation reaction using 15 wt{\%} Ni/Mg/Al hydrotalcite coated catalyst. Power law and Langmuir-Hinshelwood-Hougens-Watson (LHHW) models were used to represent the kinetics of CO2 methanation. LHHW model displayed better representation of the kinetics and was chosen for modeling the CO2 methanation reaction in a plate type heat exchanger reactor. Comparison between experiments, 1D model, and 2D model proved the reliability of using internally coated tubular reactor for kinetic modeling of coated catalyst. This work also performed modeling of a plate type heat exchanger reactor with catalytically coated corrugated plates for CO2 methanation. Heat exchanger reactors with coated catalyst allow controlling the reaction temperature and thus, avoiding temperature runaway owing to the highly exothermic CO2 methanation reaction. The corrugated pattern created by the opposing corrugated plates of the plate heat exchanger reactor proved to be excellent for distributing the flow homogeneously inside each reaction channel and the entire reactor. In this reactor, 92{\%} CO2 conversion was achieved at GHSV = 4400 h(-1), 573 K and 5 bar. The good performance of this reactor was due to the high activity displayed by Ni-hydrotalcite coated catalyst, homogeneous flow distribution and high surface area of the reactor. Thus, plate type heat exchanger reactor with catalytically coated corrugated plates proved to be suitable alternative to plate heat exchanger reactors with microchannel plates.",
keywords = "Carbon capture and utilization, CO2 methanation, Heat exchanger reactor, Coated catalyst, Reactor modeling, Hydrotalcite, FISCHER-TROPSCH SYNTHESIS, WATER-GAS SHIFT, POWER-TO-GAS, MICROCHANNEL REACTOR, SELECTIVE METHANATION, CARBON-DIOXIDE, TECHNOLOGIES, CONVERSION, PROJECTS, HYDROGEN",
author = "Vazquez, {Francisco Vidal} and Johanna Kihlman and Ajenthan Mylvaganam and Pekka Simell and Mari-Leena Koskinen-Soivi and Ville Alopaeus",
year = "2018",
month = "10",
day = "1",
doi = "10.1016/j.cej.2018.05.119",
language = "English",
volume = "349",
pages = "694--707",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier Science",

}

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TY - JOUR

T1 - Modeling of nickel-based hydrotalcite catalyst coated on heat exchanger reactors for CO2 methanation

AU - Vazquez, Francisco Vidal

AU - Kihlman, Johanna

AU - Mylvaganam, Ajenthan

AU - Simell, Pekka

AU - Koskinen-Soivi, Mari-Leena

AU - Alopaeus, Ville

PY - 2018/10/1

Y1 - 2018/10/1

N2 - This study presents the kinetic modeling of CO2 methanation reaction using 15 wt% Ni/Mg/Al hydrotalcite coated catalyst. Power law and Langmuir-Hinshelwood-Hougens-Watson (LHHW) models were used to represent the kinetics of CO2 methanation. LHHW model displayed better representation of the kinetics and was chosen for modeling the CO2 methanation reaction in a plate type heat exchanger reactor. Comparison between experiments, 1D model, and 2D model proved the reliability of using internally coated tubular reactor for kinetic modeling of coated catalyst. This work also performed modeling of a plate type heat exchanger reactor with catalytically coated corrugated plates for CO2 methanation. Heat exchanger reactors with coated catalyst allow controlling the reaction temperature and thus, avoiding temperature runaway owing to the highly exothermic CO2 methanation reaction. The corrugated pattern created by the opposing corrugated plates of the plate heat exchanger reactor proved to be excellent for distributing the flow homogeneously inside each reaction channel and the entire reactor. In this reactor, 92% CO2 conversion was achieved at GHSV = 4400 h(-1), 573 K and 5 bar. The good performance of this reactor was due to the high activity displayed by Ni-hydrotalcite coated catalyst, homogeneous flow distribution and high surface area of the reactor. Thus, plate type heat exchanger reactor with catalytically coated corrugated plates proved to be suitable alternative to plate heat exchanger reactors with microchannel plates.

AB - This study presents the kinetic modeling of CO2 methanation reaction using 15 wt% Ni/Mg/Al hydrotalcite coated catalyst. Power law and Langmuir-Hinshelwood-Hougens-Watson (LHHW) models were used to represent the kinetics of CO2 methanation. LHHW model displayed better representation of the kinetics and was chosen for modeling the CO2 methanation reaction in a plate type heat exchanger reactor. Comparison between experiments, 1D model, and 2D model proved the reliability of using internally coated tubular reactor for kinetic modeling of coated catalyst. This work also performed modeling of a plate type heat exchanger reactor with catalytically coated corrugated plates for CO2 methanation. Heat exchanger reactors with coated catalyst allow controlling the reaction temperature and thus, avoiding temperature runaway owing to the highly exothermic CO2 methanation reaction. The corrugated pattern created by the opposing corrugated plates of the plate heat exchanger reactor proved to be excellent for distributing the flow homogeneously inside each reaction channel and the entire reactor. In this reactor, 92% CO2 conversion was achieved at GHSV = 4400 h(-1), 573 K and 5 bar. The good performance of this reactor was due to the high activity displayed by Ni-hydrotalcite coated catalyst, homogeneous flow distribution and high surface area of the reactor. Thus, plate type heat exchanger reactor with catalytically coated corrugated plates proved to be suitable alternative to plate heat exchanger reactors with microchannel plates.

KW - Carbon capture and utilization

KW - CO2 methanation

KW - Heat exchanger reactor

KW - Coated catalyst

KW - Reactor modeling

KW - Hydrotalcite

KW - FISCHER-TROPSCH SYNTHESIS

KW - WATER-GAS SHIFT

KW - POWER-TO-GAS

KW - MICROCHANNEL REACTOR

KW - SELECTIVE METHANATION

KW - CARBON-DIOXIDE

KW - TECHNOLOGIES

KW - CONVERSION

KW - PROJECTS

KW - HYDROGEN

U2 - 10.1016/j.cej.2018.05.119

DO - 10.1016/j.cej.2018.05.119

M3 - Article

VL - 349

SP - 694

EP - 707

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -

ID: 26963137