Research Group Zero Emission Technologies

Transcription

1 Research Group Zero Emission Technologies Contact: Tobias Pröll Institute of Chemical Engineering Page 1

2 Working Group Zero Emission Technologies Content Research Group Zero Emission Technologies Research Topics Project Group Chemical Looping Technologies Project Group Oxyfuel Combustion Project Group Process Simulation Links and Contact Institute of Chemical Engineering Page 2

3 Working Group Zero Emission Technologies The ZET team focuses on projects from the energy technology sector with the goal to substantially reduce greenhouse gas emissions. Here, three general approaches are put forward: Energy efficiency increase in industrial processes Renewable fuels substituting fossil energy Capture of CO 2 from energy conversion processes Institute of Chemical Engineering Page 3

4 Working Group Zero Emission Technologies Recent topics in investigation are: Fluidized bed systems for inherent CO 2 capture (Chemical Looping Combustion). Catalytic reforming in fluidized beds (Chemical Looping Reforming). Oxyfuel combustion in circulating fluidized bed regime. Analysis and optimization of industrial fluidized bed combustors. Techno-economic evaluation of fossil energy substitution in industry. Institute of Chemical Engineering Page 4

5 Project Group Chemical Looping Technologies The research focus of the project group chemical looping technologies lies on CLC and CLR. In both technologies, oxygen is selectively transported by metal oxides. Chemical looping combustion (CLC) Chemical looping reforming (CLR) depleted air CO 2, H 2 O N 2,Ar CO, H 2, CO 2, H 2 O MeO MeO Airreactor Fuelreactor Airreactor Fuelreactor (AR) MeO -1 (FR) (AR) MeO -1 (FR) air fuel air fuel Institute of Chemical Engineering Page 5

6 Project Group Chemical Looping Technologies The Dual circulating fluidized bed (DCFB) reactor system air-reactor exhaust fuel-reactor exhaust A I R R E A C T O R upper loop seal F U E L R E A C T O R internal loop seal air lower loop seal fuel 120kW DCFB CL pilot rig Institute of Chemical Engineering Page 6

7 Project Group Chemical Looping Technologies Main research activities in chemical looping include: Reactor hydrodynamics Depleted air global air ratio > 1 Detailed reactor modelling. MeO Q x AR Fuel reactor Process modelling end oxidizer Air Process demonstration reactor Condensation CO 2 + H 2 O CO 2 H 2 O devolatizer (to compression) Solid fuel MeO (x-1) char gasifier Air Steam Institute of Chemical Engineering Page 7

8 Project Group Oxyfuel Combustion OxyFuel is a key technology for efficient separation of CO2 from combustion of fuels. performs combustion of fuel with pure or enriched oxygen (mixing flue gas with pure oxygen). allows improved operation for low calorific fuels thanks to the possibility of variation of O2 content at the inlet. entails an energy penalty comparable or even less than for pre and post combustion CO2 capture. in CFB can reduce formation of thermal NOX compared to PCC. post combustion heat exchanger hot gas fan Institute of Chemical Engineering Page 8

9 Project Group Oxyfuel Combustion Oxyfuel in circulating fluidized bed system Reactor Cyclone Riser Cyclone separator Post combustion chamber Filter box Fuel hopper Secondary Air Downcomer Loop seal Conveyor Bed material cooling Flow meters Primary Air 100kW Oxyfuel pilot rig Institute of Chemical Engineering Page 9

10 Project Group Process Simulation Process Simulation support the development of a production process and the scale up m+w zander laboratory pilot plant in a laboratory demonstration plant commercial production plant first calculations, mass & energy balances, experiments contribution of process simulation development process design &data for basic engineering support operation start, plant optimization simulation model fuel testing experimental results plant parameters operation data Institute of Chemical Engineering Page 10

11 Project Group Process Simulation The tasks performed in the project group Process Simulation include: basic plausibility calculations mass- and energy balances for new production processes development of new process designs energy balances for new power plant concepts in Energy- and Chemical engineering. Furthermore, the focus also lies on various researchtasks in the field of thermal fuel conversion, e.g. biomass gasification and municipal solid waste combustion plants. Institute of Chemical Engineering Page 11

12 Further Information Contact Research Group Zero Emission Technologies Dipl.-Ing. Dr. Tobias Pröll Tel Fax Links ology/zero_emission_technologies/en/ Institute of Chemical Engineering Page 12