Periodic Reporting for period 1 - Bio-FlexCLC (Flexible chemical looping combustion for combined heat and power production from biogenic residues with negative emission)
Período documentado: 2024-06-01 hasta 2025-11-30
The IPCC reports that “Carbon Dioxide Removal (CDR) technologies such as Bio-Energy with Carbon Capture and Storage (BECCS) are fundamental to many scenarios that achieve low-CO2eq concentrations”. However, the high cost and energy penalties of CCS are considered one of the most important barriers to the implementation of CCS and BECCS. Therefore, it is essential to develop technologies for BECCS, where economic risks are low for an end-user, to spur deployment of BECCS in industries.
One the other hand, it is imperative to ensure that bioenergy production has no negative social and environmental impacts. To produce bioenergy, low-value biogenic residues and wastes can be used to promote the circular economy with the advantage of no additional land use to grow the biomass, minimizing the conflict with food, and minimizing landfilling and soil contamination. However, these resources are finite and must be employed efficiently. Additionally, biogenic residues are highly diverse sources, inherently containing impurities and elevated ash content, necessitating pre-processing prior to their utilization in bioenergy production. Therefore, the development of efficient and reliable technologies for the utilization of biogenic residues and wastes for bioenergy production, including combined heat and power (CHP), is needed.
Biomass is used extensively in CHP plants in Scandinavia and Northern Europe, with these plants often coupled to the district heating nets in a region or city. However, as solar and wind power generation continues to expand, utility companies engaged in CHP face growing pressure to devise adaptable solutions for effectively balancing the intermittent electricity production with electricity demand in terms of location, timing, and quantity. This demand necessitates the development of flexible technologies for CHP which are capable of swiftly adjusting the ratio of heat-to-power production and reducing the overall production output when there is decreased demand for heat and/or power.
Considering these needs, the Bio-FlexCLC consortium aims to develop and demonstrate a full-chain technology that utilizes biogenic residues and wastes for flexible CHP production with the possibility of cost-effective CO2 capture. The idea is to combine the break-through chemical-looping combustion (CLC) technology with conventional circulating fluidized bed (CFB) boilers, a technology widely used in Scandinavia and Europe for combined heat and power production. Bio-FlexCLC concept operating in CLC mode enables CHP production with negative emissions at low-cost while the concept is flexible to switch to CFB boiler mode to produce CHP with net-zero emissions. The proposed concept can be operated in different combustion modes depending upon market conditions which could enhance the adoption of the technology by the utility companies since it decreases the risk of implementation.
Bio-FlexCLC concept offers a range of enduring advantages:
- A fuel combustion facility which can achieve negative emissions with CO2 capture.
- A low cost and energy efficient technology for CO2 capture.
- 100% CO2 capture potential while having low emissions of NOx, SOx and other harmful components.
- Low corrosion with improved steam data for improved electrical efficiency.
- A flexible system with respect to the heat/power ratio.
- Possibility to run as a conventional CFB unit without CO2 capture when market conditions are not viable for CO2 capture.
- Facilitating the utilization of challenging-to-exploit or low-value bio resources like organic wastes.
- Creating new employment opportunities, particularly in biomass or residue-rich regions, such as rural areas.
- Reducing reliance on fossil fuels and mitigating the need for oil imports.
- Enhancing local and regional production autonomy and supply security.
- Diminishing greenhouse gas emissions linked to the natural decomposition of low-value biomass.
- Most notably, contributing to the principles of the circular economy, particularly when resources like agricultural residues are effectively harnessed.
One the other hand, it is imperative to ensure that bioenergy production has no negative social and environmental impacts. To produce bioenergy, low-value biogenic residues and wastes can be used to promote the circular economy with the advantage of no additional land use to grow the biomass, minimizing the conflict with food, and minimizing landfilling and soil contamination. However, these resources are finite and must be employed efficiently. Additionally, biogenic residues are highly diverse sources, inherently containing impurities and elevated ash content, necessitating pre-processing prior to their utilization in bioenergy production. Therefore, the development of efficient and reliable technologies for the utilization of biogenic residues and wastes for bioenergy production, including combined heat and power (CHP), is needed.
Biomass is used extensively in CHP plants in Scandinavia and Northern Europe, with these plants often coupled to the district heating nets in a region or city. However, as solar and wind power generation continues to expand, utility companies engaged in CHP face growing pressure to devise adaptable solutions for effectively balancing the intermittent electricity production with electricity demand in terms of location, timing, and quantity. This demand necessitates the development of flexible technologies for CHP which are capable of swiftly adjusting the ratio of heat-to-power production and reducing the overall production output when there is decreased demand for heat and/or power.
Considering these needs, the Bio-FlexCLC consortium aims to develop and demonstrate a full-chain technology that utilizes biogenic residues and wastes for flexible CHP production with the possibility of cost-effective CO2 capture. The idea is to combine the break-through chemical-looping combustion (CLC) technology with conventional circulating fluidized bed (CFB) boilers, a technology widely used in Scandinavia and Europe for combined heat and power production. Bio-FlexCLC concept operating in CLC mode enables CHP production with negative emissions at low-cost while the concept is flexible to switch to CFB boiler mode to produce CHP with net-zero emissions. The proposed concept can be operated in different combustion modes depending upon market conditions which could enhance the adoption of the technology by the utility companies since it decreases the risk of implementation.
Bio-FlexCLC concept offers a range of enduring advantages:
- A fuel combustion facility which can achieve negative emissions with CO2 capture.
- A low cost and energy efficient technology for CO2 capture.
- 100% CO2 capture potential while having low emissions of NOx, SOx and other harmful components.
- Low corrosion with improved steam data for improved electrical efficiency.
- A flexible system with respect to the heat/power ratio.
- Possibility to run as a conventional CFB unit without CO2 capture when market conditions are not viable for CO2 capture.
- Facilitating the utilization of challenging-to-exploit or low-value bio resources like organic wastes.
- Creating new employment opportunities, particularly in biomass or residue-rich regions, such as rural areas.
- Reducing reliance on fossil fuels and mitigating the need for oil imports.
- Enhancing local and regional production autonomy and supply security.
- Diminishing greenhouse gas emissions linked to the natural decomposition of low-value biomass.
- Most notably, contributing to the principles of the circular economy, particularly when resources like agricultural residues are effectively harnessed.
The Bio-FlexCLC project has successfully completed its first 18 months, demonstrating strong progress toward its goal of developing and validating an efficient, scalable Chemical Looping Combustion (CLC-CFB) process to convert low-value biogenic residues and organic waste into heat and power with integrated CO2 capture. Project implementation remains on schedule, with coordinated advances in governance, technical development, pilot plant preparation, process modeling, and dissemination.
Project management and scientific coordination (WP1) are fully established, supported by effective governance structures, risk monitoring, data management practices, and reporting frameworks. Collaboration among partners is ensured through structured communication channels and regularly updated project and data management plans.
Significant technical progress has been achieved in process performance optimization (WP2). Representative biomass feedstocks have been successfully selected, and advanced CFD modeling of fuel reactors and post-oxidation chambers has been completed. Retrofit designs for 10 kW and 20 kW pilot plants are finalized, and early experimental campaigns have generated initial emissions and fuel conversion datasets. Investigations into NOₓ, SOₓ, ash behavior, and bed material interactions have begun and will expand in the next reporting period.
In downstream gas treatment and CO2 liquefaction (WP3), flue gas cleaning requirements have been defined, and pilot-scale gas treatment concepts developed. Engineering and procurement of additional gas cleaning components are underway to support high-purity CO2 conditioning and emissions control, with activities aligned to the project timeline.
Progress toward large-scale demonstration (WP4) includes continued design, upgrade, and preparation of the 1 MW pilot plant, incorporating a post-oxidation chamber, improved fuel flexibility, enhanced gas measurement systems, and corrosion monitoring instrumentation. Planned campaigns will evaluate fuel adaptability, conversion efficiency, emissions performance, reactor stability, and generate experimental datasets to support CFD model validation.
In process evaluation and optimization (WP5), scalable Bio-FlexCLC plant layouts have been developed, along with early CHP integration concepts for biogenic residues and waste fuels. Future work will focus on dynamic operation modeling, heat-to-power flexibility, and techno-economic benchmarking against state-of-the-art CHP systems with post-combustion capture.
Sustainability and social life cycle assessment (WP6) is scheduled to begin at Month 25, with preparatory coordination and conceptual alignment already initiated.
Overall, the project has met or exceeded early technical milestones, reduced key uncertainties related to biomass fuel behavior, reactor performance, and flue gas cleaning, and established a strong foundation for upcoming demonstration, techno-economic, and sustainability assessment phases. The next period will focus on extended pilot operation, full process chain validation, CO2 liquefaction demonstration, and integrated performance and impact assessment, accelerating Bio-FlexCLC toward TRL5+ readiness and commercial relevance.
Project management and scientific coordination (WP1) are fully established, supported by effective governance structures, risk monitoring, data management practices, and reporting frameworks. Collaboration among partners is ensured through structured communication channels and regularly updated project and data management plans.
Significant technical progress has been achieved in process performance optimization (WP2). Representative biomass feedstocks have been successfully selected, and advanced CFD modeling of fuel reactors and post-oxidation chambers has been completed. Retrofit designs for 10 kW and 20 kW pilot plants are finalized, and early experimental campaigns have generated initial emissions and fuel conversion datasets. Investigations into NOₓ, SOₓ, ash behavior, and bed material interactions have begun and will expand in the next reporting period.
In downstream gas treatment and CO2 liquefaction (WP3), flue gas cleaning requirements have been defined, and pilot-scale gas treatment concepts developed. Engineering and procurement of additional gas cleaning components are underway to support high-purity CO2 conditioning and emissions control, with activities aligned to the project timeline.
Progress toward large-scale demonstration (WP4) includes continued design, upgrade, and preparation of the 1 MW pilot plant, incorporating a post-oxidation chamber, improved fuel flexibility, enhanced gas measurement systems, and corrosion monitoring instrumentation. Planned campaigns will evaluate fuel adaptability, conversion efficiency, emissions performance, reactor stability, and generate experimental datasets to support CFD model validation.
In process evaluation and optimization (WP5), scalable Bio-FlexCLC plant layouts have been developed, along with early CHP integration concepts for biogenic residues and waste fuels. Future work will focus on dynamic operation modeling, heat-to-power flexibility, and techno-economic benchmarking against state-of-the-art CHP systems with post-combustion capture.
Sustainability and social life cycle assessment (WP6) is scheduled to begin at Month 25, with preparatory coordination and conceptual alignment already initiated.
Overall, the project has met or exceeded early technical milestones, reduced key uncertainties related to biomass fuel behavior, reactor performance, and flue gas cleaning, and established a strong foundation for upcoming demonstration, techno-economic, and sustainability assessment phases. The next period will focus on extended pilot operation, full process chain validation, CO2 liquefaction demonstration, and integrated performance and impact assessment, accelerating Bio-FlexCLC toward TRL5+ readiness and commercial relevance.