Steam methane reforming in packed-bed and Pd membrane reactors

simulation and scaling-up

Name: Thitima Chompupun

LCSH: Kasetsart University -- Theses. M.Eng. (Chemical Engineering) 2018

Classification :.LCCS: TP248.25.M45

LCSH: Kasetsart University. -- Department of Chemical Engineering -- Theses

LCSH: Membrane reactors

LCSH: Palladium catalysts

LCSH: Methane

LCSH: Catalytic reforming

Abstract: A membrane reactor with in situ hydrogen separation for steam methane reforming is intensified equipment for shifting equilibrium. Kinetic parameters of steam methane reforming (SMR) were determined from the obtained experimental data from a conventional reactor with developed reactor models through COMSOL Multiphysics program. Pd-membrane reactor models were developed to study the effects of temperatures, pressures and steam-to-methane ratios on the reactor performance. It can be seen that the membrane reactor greatly enhances methane conversion than a conventional reactor. In addition, the proper synthesis gas ratio for Fischer-Tropsch process can be achieved from SMR. Verifications for all effects showed good agreements. Scaling-up was investigated using verified models including obtained kinetic parameters. In reactor size scaling-up of a membrane reactor, the membrane surface area should be properly available and it is impractical for large reactor. Scaling-up by numbering-up of square honeycomb monolith reactor is proposed in this work. In addition, the design with thermal integration which is convenience for this design is included. In the design of a bundle of square monoliths with thermal integration, geometry parameters, especially the ratio of membrane surface area to volume, are important. The reactor operated with the product of Damkohler and Peclet number (DaPe) of 1 where membrane surface area to bed volume ratio, / mem r S V , is 254.5 m2 /m3 indicates that the reaction production rate and permeation rate are equal and provides the best effectiveness of reactor membrane utilization. The reactor design suggestion can be drawn here to have DaPe close to 1 for optimum design.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Sunun Limtrakul

Role: Thesis Advisor

Name: Terdthai Vatanatham

Role: Thesis CO-Advisor

Created: 2018

Modified: 2025-07-07

Issued: 2025-07-07

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2561/thitima-cho-all.pdf

CallNumber: TP248.25.M45 .T45

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Chemical Engineering

Grantor: Kasetsart University

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