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Project description:

Project no:
Carbon capture & utilization by maturing the bio oxyfuel technology (Bio-CCS/U) in power generation and cement industry
1st project leader:
Maier, Jörg - Institute of Combustion and Power Plant Technology (IFK), University of Stuttgart
2nd project leader
There is a consensus on the key role of carbon capture, utilization and storage (CCUS) in the reduction of industrial CO2 emissions. An aggregated CO2 amount of 1.8 Gt until 2030 and 12.2 Gt until 2050 must be captured in order to meet ambitious CO2 reduction targets, while 40 % of those emissions cuts must take place in the European industry. The pace at which carbon capture deployment has taken place in the last ten years is nevertheless slower than expected that is mainly related to the lack of incentives and the associated implementation costs. The project proposal aims to contribute to the long-term CO2 reduction targets and to accelerate carbon capture & utilization by maturing the oxyfuel technology in power generation and cement industry.

The project will explore the oxyfuel technology for retrofitting and new builds focusing on integration of a methanol synthesis and combustion of up to 100 % biogenic share. These promote the Bio-CCUS process for industry to achieve negative CO2 emissions. A substantial techno-economic analysis by varying different process boundary conditions will be the key topic of the PhD work.

R&D work topics:
- Literature study to summarize the state of the art of the Oxyfuel Technology and the Bio-CCUS processes to support the creation of a Carbon Cycle
- Build-up of sub-process and an overall process model to evaluate heat and mass balances
- Evaluation of CAPEX and OPEX of different operational and process scenarios
- Experimental and analytical tests to create dedicated validation data for the process model
- Presentations of results in conferences and publications in reviewed journals

IFK will act as host, scientific supervisor and support the PhD work with experimental and analytical resources.
F. Carrasco Maldonado, R. Spörl, K. Fleiger, V. Hoenig, J. Maier, and G. Scheffknecht, “Oxy-fuel combustion technology for cement production - State of the art research and technology development,” International journal of greenhouse gas control, vol. 45, pp. 189–199, 2016

S. Rehfeldt, "Radiative Heat Transfer in Oxy-Fuel Steam Generators". Dissertation Universität Stuttgart, 2015

D. Schweitzer et al., “Process simulation and techno-economic assessment of SER steam gasification for hydrogen production,” International journal of hydrogen energy, vol. 43, no. 2, DOI: 10.1016/j.ijhydene.2017.11.001, pp. 569–579, 2018.
Methods that will be used:
Process modelling software like ASPEN-Plus or other similar ones and available laboratory and technical test facilities will be used to fulfil the PhD work.
Collaboration partners:
IFK cooperate on European and international level with research groups and industry to develop and demonstrate the oxyfuel technology in the power plant and cement sector.
Expected candidate‘s qualification:
- Master of Science in Energy or related subjects like environmental engineering
- Theoretical background of thermal processes
- Interest and if possible experience in process simulation (and related software) and process model development
- Good English in writing and conversation, ability to work independently and also in a team
oxyfuel, process simulation, process model development, techno-economic analysis, methanol synthesis, Bio-CCUS