OxyCO2
Oxyfuel combustion of sewage sludge with electrolysis oxygen for the utilization of CO2 in Power-to-X processes
The overall project investigates the oxyfuel mono-combustion of sewage sludge in fluidized-bed plants using electrolysis oxygen and the utilization of CO2 with electrolysis hydrogen in a synthesis process.
The OxyCO2 project investigates the coupling of electrolysis and a fluidized-bed combustion system. The electrolysis oxygen will be used to enable sewage sludge mono-combustion in oxyfuel operation. CO2 produced from combustion can be used together with electrolysis hydrogen to produce methanol. Experimental sewage sludge combustion in a fluidized-bed combustion system will determine optimal operating conditions by varying several parameters (e.g., flue gas circulation, lambda, feed gas preheating). A modular pilot-scale flue gas cleaning plant will be constructed to investigate the impact of partial and full oxyfuel combustion on flue gas cleaning. In addition, the process will be simulated using the experimental data. This includes examining different modes for oxyfuel combustion and the optimization of heat integration. Based on the experimental and simulation results, coupled operation of a fluidized-bed pilot plant and a flue gas cleaning plant will be demonstrated for the partial and full oxyfuel mono-combustion of sewage sludge. For partial oxyfuel combustion, CO2 capture using an amine scrubber will be investigated as a process alternative at an existing pilot-scale pilot plant and evaluated in comparison with pure oxyfuel combustion.
Work Package RES
RES models and simulates a power plant for both partial oxyfuel operation and full oxyfuel operation, including a connected P2X process. The aim of the power plant simulation is to find the optimal operating point for both operating modes and compare it with the experimental results.
Contact:
Technical University of Munich (TUM)
Chair of Renewable Energy Systems (RES)
Prof. Dr.-Ing. Matthias Gaderer
Project website and project partners:
https://www.energetische-biomassenutzung.de/de/projekte/03EI5458
Project number: 03EI5458A