Carbon capture and Syngas production by Biogas Pyrolysis
Background:
The fermentation of biomass, such as corn silage or manure, allows to effectively fix carbon from the environment. The product of this process is a mixture of methane and CO2, also known as biogas. Via a pyrolysis process the biogas can be converted to syngas (H2/CO), which is an important intermediate product in the chemical industry, for example for the production of methanol. As CO2 is converted in this process, it can actively serve as a CO2 sink, which makes this process particularly attractive from an ecological point of view.
Project:
Within the scope of this project, the conversion of biogas to syngas is investigated, whereby various reactions, such as the Boudouard equilibrium, the water-gas shift reaction or dry reforming, must be taken into account. In addition to the thermal decomposition, the influence of these side reactions in particular is investigated, as they have a significant influence on the resulting H2/CO ratio in the product gas, which is essential for the utilization of the syngas. For this reason, the process parameters are optimized with regard to this ratio. This data is also be fed into a techno-economic study to determine the syngas production costs and the CO2 balance of the overall process depending on process parameters as well as external, location-dependent parameters using Aspen Plus.
Contact: Ahmet Çelik, Patrick Lott, Olaf Deutschmann
Funding: Internal funding
Related Publications:
A. Çelik, I. Ben Othman, H. Müller, P. Lott, O. Deutschmann, Reaction Chemistry & Engineering, 2023, 9, 108-118, doi.org/10.1039/D3RE00360D.
