| 1. |
- Biermann, Max, 1989, et al.
(författare)
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Capture of CO2 from Steam Reformer Flue Gases Using Monoethanolamine: Pilot Plant Validation and Process Design for Partial Capture
- 2022
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Ingår i: Industrial & Engineering Chemistry Research. - : American Chemical Society (ACS). - 1520-5045 .- 0888-5885.
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Tidskriftsartikel (refereegranskat)abstract
- Carbon dioxide (CO2) capture from a slipstream of steam reformer flue gas (18–20 vol %wet CO2) using 30 wt % aqueous monoethanolamine was performed for ∼500 h in a mobile test unit (∼120 kg CO2/h). Specific reboiler duties (SRDs) of 3.6–3.8 MJ/kg CO2 were achieved at 90% capture. The pilot data validate the modeling of off-design partial capture, that is, operation at lower CO2 capture rates (at constant gas flow) than the absorption column was designed to achieve. This paper demonstrates that off-design partial capture enables significant energy savings (SRD, cooling) relative to on-design capture. The accrued savings depend on the column design (packing height, flooding approach) and the feed CO2 concentration. Finally, a concept for stepwise deployment of carbon capture and storage in industries with high-CO2 concentration sources (e.g., steel and cement manufacturing and refining) is introduced. Thanks to its inherent full-capture-ready design, the initial energy-efficient, off-design partial capture operation can be extended to full capture over time.
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| 2. |
- Biermann, Max, 1989, et al.
(författare)
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Lessons learned from the Preem-CCS project – a pioneering Swedish-Norwegian collaboration showcasing the full CCS chain
- 2022
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Ingår i: 16th Greenhouse Gas Control Technologies Conference 2022 (GHGT-16).
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Konferensbidrag (refereegranskat)abstract
- This paper presents the key findings of the Preem-CCS project, a co-funded Swedish-Norwegian R&D collaboration that investigated CO2 capture from the Preem refineries in Sweden, and subsequent ship transport of captured CO2 for permanent storage on the Norwegian Continental Shelf. The project was conducted 2019-2022 and accomplished: 1) the on-site pilot scale demonstration of amine-based CO2 absorption using Aker Carbon Capture’s mobile test unit (MTU), 2) an in-depth investigation of energy-efficient heat supply for CO2 capture, 3) a detailed techno-economic evaluation of a feasible carbon capture and storage (CCS) chain (from CO2 capture in Sweden to ship transport to Norway), and 4) an investigation of relevant legal and regulatory aspects of trans-border CO2 transport between Sweden and Norway.
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| 3. |
- Biermann, Max, 1989, et al.
(författare)
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Partial CO2 capture in process industry – a review of aspects to consider for a cost-effective and timely CCS implementation
- 2022
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Ingår i: 16th Greenhouse Gas Control Technologies Conference 2022 (GHGT-16).
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Konferensbidrag (refereegranskat)abstract
- Carbon capture and storage (CCS) activities need to be ramped up significantly to address the climate crises. This paper reviews relevant techno-economic and policy-related aspects for a cost-effective, near-term implementation of CCS via partial CO2 capture in the process industry which have been explored in a doctoral thesis from a site-level perspective. These aspects include: 1) the energy- and cost-effective design of solvent-based processes for partial capture, entailing cost savings of up to 10% for CO2-rich gases (>17 vol.%wet); 2) the efficient use of available heat on-site to power partial which can confer cost savings along the entire CCS chain of up to ~25%; 3) the incorporation of site realities, such as temporal variations in heat availability, into techno-economic assessments; 4) the adaption of policies that address the allocation of carbon emissions reductions to low-carbon products, so that investments in mitigation technologies are incentivized with respect to the ambition level; and 5), the recognition of the rather narrow window of opportunity for partial capture with regard to the climate targets of the Paris Agreement and to the lifetime of the existing infrastructure, alternative production and (co-)mitigation technologies, as well as the regional energy and CO2 transport and storage systems.
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| 4. |
- Biermann, Max, 1989
(författare)
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Partial CO2 capture to facilitate cost-efficient deployment of carbon capture and storage in process industries - Deliberations on process design, heat integration, and carbon allocation
- 2022
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Climate change requires that all energy-related sectors reduce drastically their greenhouse gas (GHG) emissions, at a global rate of 1–2 GtCO2 per year, starting now. Process industries, such as the iron and steel, cement, petrochemical, and oil-refining industries, are inherently carbon-intensive, and carbon capture and storage (CCS) is one of the few options available to achieve the required deep reductions in carbon dioxide (CO2) emissions. Despite being technologically mature, CCS has so far not been implemented at the required rates. This is due inter alia to the low value created by CCS for process industries, which is attributed to uncertainties related to carbon pricing and the considerable investments required for CO2 capture installations. This thesis explores the concept of partial carbon capture as an opportunity for the process industry, as part of its transition, to operate in a net-zero emissions framework by the middle of this century. Partial capture is governed by market and site conditions, and aims to capture a designated share of the CO2 emissions from an industrial site, thereby lowering the absolute and specific costs (in€/tCO2) for CO2 capture, as compared to a conventional full-capture system. The thesis elaborates the relevant technical, economic, and policy-related aspects related to facilitating the near-term implementation of carbon capture at industrial sites. These aspects include: 1) the energy- and cost-effective design of solvent-based processes for partial capture, which can lead to capture cost savings of up to 10% for gases with a high CO2 content (>17 vol.%wet); 2) the efficient use of residual heat and existing capacities on-site to power partial capture, which in case studies of an oil refinery and an integrated steel mill, are shown to confer cost savings along the entire CCS chain of 17%–24%; 3) the incorporation of site realities, such as temporal variations in heat availability, into techno-economic assessments; 4) the adaption of policies that address the allocation of carbon emissions reductions to low-carbon products, so that investments in mitigation technologies are incentivized with respect to the ambition level; and 5), the recognition of the rather narrow window of opportunity for partial capture with regard to the lifetime of the existing infrastructure, alternative production and (co-)mitigation technologies, as well as the regional energy and CO2 transport and storage systems. As the title image indicates, the share of carbon extracted from the earth that is sequestered needs to reach 100% by mid-century, in order to limit global warming in line with the targets of the Paris Agreement (i.e., 1.5°C or well below 2°C). Thus, partial capture is only a short-term solution for kick-starting CCS, and it will eventually have to lead to full capture, alternatively full mitigation (e.g., via carbon-free production), or be combined with renewable feedstocks if used in the longer term. Therefore, it is timely for the process industry to apply partial capture and, thereby, ramp up widespread adoption of CCS, so to build up the infrastructure for direct removal of carbon from the atmosphere, which will be required on the gigatonne scale in the second half of the 21st Century.
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| 5. |
- Biermann, Max, 1989, et al.
(författare)
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Preem CCS - Synthesis of main project findings and insights
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The Preem-CCS project was a Swedish-Norwegian collaboration that investigated CO2 capture from the Preem refineries in Sweden, and subsequent ship transport of captured CO2 for permanent storage on the Norwegian Continental Shelf. The project was conducted from early 2019 to beginning of 2022 and funding was provided by the Norwegian CLIMIT-Demo program via Gassnova, by the Swedish Energy Agency and by the participating industry and research partners (Preem, Aker Carbon Capture, SINTEF Energy Research, Chalmers University of Technology, and Equinor). This report summarizes the key findings of the project activities listed below: - Pilot-scale testing of CO2 capture at the hydrogen production unit (HPU) at the Lysekil refinery using the Aker Carbon Capture (ACC) mobile test unit (MTU) - In-depth investigation of energy efficiency opportunities along the CCS chain, including the use of residual heat at the Lysekil refinery site to satisfy the energy requirements for solvent regeneration - Evaluation of the technical feasibility and cost evaluation of the CCS chain including CO2 capture and transportation by ship to storage facilities off the Norwegian west coast - Investigation of relevant legal and regulatory aspects related to trans-border CO2 transport and storage and national emissions reduction commitments in Norway and Sweden The report also discusses the next steps towards implementation of CCS at Preem refineries in Lysekil and Gothenburg.
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| 6. |
- Biermann, Max, 1989, et al.
(författare)
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The role of energy supply in abatement cost curves for CO2 capture from process industry – a case study of a Swedish refinery
- 2022
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Ingår i: Applied Energy. - : Elsevier BV. - 1872-9118 .- 0306-2619. ; 319
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Tidskriftsartikel (refereegranskat)abstract
- Carbon capture and storage (CCS) activities need to be ramped up to meet the climate crisis. Abatement cost curves help identify low-cost starting points and formulate roadmaps for the implementation of CCS at industrial sites. In this work, we introduce the concept of energy supply cost curves to enhance the usefulness and accuracy of abatement cost curves. We use a multi-period mixed-integer linear program (MILP) to find an optimal mix of heat sources considering the existing site energy system. For a Swedish refinery, we found that residual heat and existing boiler capacities can provide the heat necessary for CCS that avoids more than 75% of the site emissions. Disregarding the existing site energy system and relying on new capacities instead, would lead to capture costs that are 40-57% higher per tonne of CO2-avoided (excl. CO2 liquefaction, transport, and storage). Furthermore, we quantified the impact of temporal variations of heat sources (intermittent residual heat) on the cost and emissions of heat supply to 7-26% and 9-66%, respectively. The conducted optimization of the energy supply mix under consideration of temporal variations leads to detailed estimates of energy supply costs ranging from partial to full CO2 capture, and thus, improve abatement cost curves.
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| 7. |
- Eliasson, Åsa, 1993, et al.
(författare)
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Efficient heat integration of industrial CO2 capture and district heating supply
- 2022
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Ingår i: International Journal of Greenhouse Gas Control. - : Elsevier BV. - 1750-5836. ; 118
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Tidskriftsartikel (refereegranskat)abstract
- Excess heat from industrial processes can be used for carbon capture and storage (CCS) as well as providing heat to a district heating network, leading to increased energy efficiency and reduction of on-site and/or off-site CO2 emissions. In this work, both options are assessed with respect to economic performance and potential reduction of CO2 emissions. The work includes a generic study based on five heat load curves for each of which three CO2 capture plant configurations were evaluated. The economic assessment indicates that the specific cost of capture ranges from 47-134 €/t CO2 depending on heat profile and capture plant configuration. Having excess heat available during a long period of the year, or having a high peak amount of heat, were shown to lead to low specific capture costs. The paper also includes results of a case study in which the methodology was applied to actual seasonal variations of excess heat for an integrated steel mill located in northern Sweden. Specific capture costs were estimated to 27-44 €/t CO2, and a 36% reduction of direct plant emissions can be achieved if the CO2 capture plant is prioritized for usage of the available excess heat
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