| Title |
Methanation of syngas from biomass gasification: Small-scale plant design in Aspen Plus |
| ID_Doc |
10127 |
| Authors |
Ciccone, B; Murena, F; Ruoppolo, G; Urciuolo, M; Brachi, P |
| Title |
Methanation of syngas from biomass gasification: Small-scale plant design in Aspen Plus |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.applthermaleng.2024.122901 |
| Abstract |
The objective of this study is to investigate the upgrading of low-quality nitrogen-diluted syngas derived from biomass air gasification processes into a methane-rich gas stream. Both the thermodynamic and the kinetic aspects are addressed in the paper. Using the Aspen Plus software, a thermodynamic analysis was conducted; then, different plant designs are simulated and compared, including reactor sizing and performance. The results demonstrate that the upgrading of diluted syngas poses challenges which limit its application to small-scale decentralized systems. It was found that a system comprising of four adiabatic fixed-bed reactors, intercooling, and efficient water removal achieves a favorable balance between performance and cost. Operating the system at a pressure of 5 bar is deemed adequate as it reduces the required catalyst mass and prevents solid carbon deposition. Notably, this configuration achieved good results, including a 99.4 % CO conversion, 89.3 % CO2 conversion, and 95.6 % CH4 yield. The final methane molar content reached 26.4 %, with a calorific value of 8.62 MJ/Nm3(STP). |
| Author Keywords |
Syngas methanation; Nitrogen dilution; Plant design; Aspen Plus; Sensitivity |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001216478700001 |
| WoS Category |
Thermodynamics; Energy & Fuels; Engineering, Mechanical; Mechanics |
| Research Area |
Thermodynamics; Energy & Fuels; Engineering; Mechanics |
| PDF |
https://doi.org/10.1016/j.applthermaleng.2024.122901
|