Universiti Teknologi Malaysia Institutional Repository

Carbon dioxide reforming of methane in porous and dense membrane reactors: thermodynamic equilibrium approach

Tung, Chung Yaw and Saidina Amin, Nor Aishah (2004) Carbon dioxide reforming of methane in porous and dense membrane reactors: thermodynamic equilibrium approach. In: Regional Symposium on Membrane Science and Technology 2004, 21-25 April 2004, Puteri Pan Pacific Hotel, Johor Bahru, Johor, Malaysia.

[img]
Preview
PDF
354Kb

Abstract

Carbon dioxide reforming of methane is one of the most promising processes to convert methane and carbon dioxide, both well known as greenhouse contributors, to syngas. During the last decades, extensive efforts have been conducted to investigate the performance of catalytic reactors to produce high yield and selectivity of the syngas. Despite all the considerable efforts, this process is still not commercially viable due to its high endothermic reversibility nature, which requires high operating temperature (~ 1000K). Besides, the occurrence of reverse water gas shift side reaction further reduces the process efficiency. Nevertheless, removal of the product(s) from the reaction zone with a membrane will shift the reaction equilibrium, and consequently increases the reactant conversion and product yield at lower operating temperatures. A thermodynamic tool based on the method of “Lagrange’s undetermined multipliers� is used to evaluate the equilibrium performance of CORM in porous and dense membrane reactor in the temperature range of 700–1200K. Thermodynamic equilibrium analysis has indicated that application of membrane reactor is able to enhance the performance of high endothermic reversible reaction (CORM) in terms of conversion, products yield and syngas ratio. However, when the temperatures exceed higher than 1000K, the advantages of membrane reactor turn to be less significant. In addition, dense membrane reactor has shown better performance than porous membrane reactor when both membranes operate at the same permeability. Nonetheless, if the hydrogen selectivity is not the key factor for designing membrane reactor, utilization of porous membrane is more applicable for CORM process due to its higher permeability nature.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Carbon dioxide, membrane reactor, methane, permeability, syngas
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:6176
Deposited By: Norhani Jusoh
Deposited On:27 Aug 2008 00:50
Last Modified:01 Jun 2010 15:39

Repository Staff Only: item control page