A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Environmental impacts of a chemical looping combustion power plant
https://orcid.org/0000-0002-0882-9580
https://orcid.org/0000-0003-0179-9371
Highlights Environmental impacts of a chemical looping combustion power plant are studied. Most lifecycle impacts stem from oxygen carrier production and effective losses. Energy input and process losses for oxygen carrier production must be reduced. Fresh oxygen carrier needs must be reduced by implementing material recycling. Optimizing parameters results in favourability compared to conventional technology.
Abstract Chemical Looping Combustion (CLC) is a promising CO2 capture option since it inherently separates CO2 from other flue components, theoretically with low energy penalty. Here, a Life Cycle Assessment model was developed of a theoretical hybrid CLC (HCLC) power plant facility utilising experimental data for CuO based oxygen carrier (OC) production and oxygen capacity. Power plant models with and without post-combustion CO2 capture, recognised as the most mature capture technology, acted as environmental performance targets. Results show that when OC is produced at lab-scale without optimisation, almost all (>99.9%) lifecycle impacts per kWh electricity from an HCLC plant derive from the specific OC material used, giving a total of ˜700 kg CO2eq/kWh. This is related to high electrical input required for OC processing, as well as high OC losses during production and from plant waste. Only when processing parameters are optimised and OC recycling from plant waste is implemented - reducing fresh OC needs – is the environmental impact lower than the conventional technologies studied (e.g. 0.2 kg CO2 eq/kWh vs. ˜0.3-1 kg CO2 eq/kWh, respectively). Further research should thus focus on identifying OCs that do not require energy intensive processing and can endure repeated cycles, allowing for recycling.
Environmental impacts of a chemical looping combustion power plant
https://orcid.org/0000-0002-0882-9580
https://orcid.org/0000-0003-0179-9371
Highlights Environmental impacts of a chemical looping combustion power plant are studied. Most lifecycle impacts stem from oxygen carrier production and effective losses. Energy input and process losses for oxygen carrier production must be reduced. Fresh oxygen carrier needs must be reduced by implementing material recycling. Optimizing parameters results in favourability compared to conventional technology.
Abstract Chemical Looping Combustion (CLC) is a promising CO2 capture option since it inherently separates CO2 from other flue components, theoretically with low energy penalty. Here, a Life Cycle Assessment model was developed of a theoretical hybrid CLC (HCLC) power plant facility utilising experimental data for CuO based oxygen carrier (OC) production and oxygen capacity. Power plant models with and without post-combustion CO2 capture, recognised as the most mature capture technology, acted as environmental performance targets. Results show that when OC is produced at lab-scale without optimisation, almost all (>99.9%) lifecycle impacts per kWh electricity from an HCLC plant derive from the specific OC material used, giving a total of ˜700 kg CO2eq/kWh. This is related to high electrical input required for OC processing, as well as high OC losses during production and from plant waste. Only when processing parameters are optimised and OC recycling from plant waste is implemented - reducing fresh OC needs – is the environmental impact lower than the conventional technologies studied (e.g. 0.2 kg CO2 eq/kWh vs. ˜0.3-1 kg CO2 eq/kWh, respectively). Further research should thus focus on identifying OCs that do not require energy intensive processing and can endure repeated cycles, allowing for recycling.
Environmental impacts of a chemical looping combustion power plant
https://orcid.org/0000-0002-0882-9580
https://orcid.org/0000-0003-0179-9371
Highlights Environmental impacts of a chemical looping combustion power plant are studied. Most lifecycle impacts stem from oxygen carrier production and effective losses. Energy input and process losses for oxygen carrier production must be reduced. Fresh oxygen carrier needs must be reduced by implementing material recycling. Optimizing parameters results in favourability compared to conventional technology.
Abstract Chemical Looping Combustion (CLC) is a promising CO2 capture option since it inherently separates CO2 from other flue components, theoretically with low energy penalty. Here, a Life Cycle Assessment model was developed of a theoretical hybrid CLC (HCLC) power plant facility utilising experimental data for CuO based oxygen carrier (OC) production and oxygen capacity. Power plant models with and without post-combustion CO2 capture, recognised as the most mature capture technology, acted as environmental performance targets. Results show that when OC is produced at lab-scale without optimisation, almost all (>99.9%) lifecycle impacts per kWh electricity from an HCLC plant derive from the specific OC material used, giving a total of ˜700 kg CO2eq/kWh. This is related to high electrical input required for OC processing, as well as high OC losses during production and from plant waste. Only when processing parameters are optimised and OC recycling from plant waste is implemented - reducing fresh OC needs – is the environmental impact lower than the conventional technologies studied (e.g. 0.2 kg CO2 eq/kWh vs. ˜0.3-1 kg CO2 eq/kWh, respectively). Further research should thus focus on identifying OCs that do not require energy intensive processing and can endure repeated cycles, allowing for recycling.
Environmental impacts of a chemical looping combustion power plant
Thorne, Rebecca J. (author) / Bouman, Evert A. (author) / Sundseth, Kyrre (author) / Aranda, Asuncion (author) / Czakiert, Tomasz (author) / Pacyna, Jozef. M. (author) / Pacyna, Elisabeth. G. (author) / Krauz, Mariusz (author) / Celińska, Agnieszka (author)
International Journal of Greenhouse Gas Control ; 86 ; 101-111
2019-04-15
11 pages
Article (Journal)
Electronic Resource
English
Honeycomb regenerator type chemical looping combustion reactor
| European Patent Office | 2015
Building the world's largest Chemical Looping Combustion (CLC) unit
| Elsevier | 2023
Analysis of thermally coupled chemical looping combustion-based power plants with carbon capture
| DSpace@MIT | 2015