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Impact of Thickness of Pd/Cu Membrane on Performance of Biogas Dry Reforming Membrane Reactor Utilizing Ni/Cr Catalyst.
- Source :
- Fuels; Sep2024, Vol. 5 Issue 3, p439-457, 19p
- Publication Year :
- 2024
-
Abstract
- The present study pays attention to biogas dry reforming for the purpose of producing H<subscript>2</subscript>. It is known that biogas contains approximately 40 vol% CO<subscript>2</subscript>, causing a decrease in the efficiency of power generation due to its lower heating value compared to natural gas, i.e., CH<subscript>4</subscript>. We suggest a hybrid system composed of a biogas dry reforming membrane reactor and a high-temperature fuel cell, i.e., a solid oxide fuel cell (SOFC). Since biogas dry reforming is an endothermic reaction, we adopt a membrane reactor, controlled by providing a non-equilibrium state via H<subscript>2</subscript> separation from the reaction site. The purpose of the present study is to understand the effect of the thickness of the Pd/Cu membrane on the performance of the biogas dry reforming membrane reactor with a Pd/Cu membrane as well as a Ni/Cr catalyst. The impact of the reaction temperature, the molar ratio of CH<subscript>4</subscript>:CO<subscript>2</subscript> and the differential pressure between the reaction chamber and the sweep chamber on the performance of the biogas dry reforming membrane reactor with the Pd/Cu membrane as well as the Ni/Cr catalyst was investigated by changing the thickness of the Pd/Cu membrane. It was revealed that we can obtain the highest concentration of H<subscript>2</subscript>, of 122,711 ppmV, for CH<subscript>4</subscript>:CO<subscript>2</subscript> = 1:1 at a reaction temperature of 600 °C and a differential pressure of 0 MPa and using a Pd/Cu membrane with a thickness of 40 μm. Under these conditions, it can be concluded that the differential pressure of 0 MPa provides benefits for practical applications, especially since no power for H<subscript>2</subscript> separation is necessary. Therefore, the thermal efficiency is improved, and additional equipment, e.g., a pump, is not necessary for practical applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 26733994
- Volume :
- 5
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Fuels
- Publication Type :
- Academic Journal
- Accession number :
- 180069805
- Full Text :
- https://doi.org/10.3390/fuels5030024