Publication

Thermo-economic analysis of chemical looping processes

2010
Student Projects

Abstract

Among the different ways of capturing carbon dioxide in industrial processes, chemical looping process is presented as an improvement in oxy-fuel combustion. Since carbon dioxide is directly generated with water in the process, there is no need of an additional, expensive capture system, which is always high energy consumer. The objective is to evaluate how chemical looping advantages in carbon dioxide capture can be adapted to hydrogen and power cogeneration. Methane is used as incoming energy source, and is associated to iron and its oxide magnetite as oxygen carrier. A thermo-economic model of the process including a thermo-dynamic model and an energy integration model is developed to evaluate the process performance with regard to costs and energy efficiency. From the sensitivity analysis and optimization, optimal operating conditions taking into account investment, production costs and efficiency are assessed in a next step.

Official source

https://infoscience.epfl.ch/entities/publication/e1ad8976-cd68-4e60-9647-bdae86fc67e0

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2010
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e1ad8976-cd68-4e60-9647-bdae86fc67e0

About this result

Related concepts (32)

Carbon capture and storage

Carbon capture and storage (CCS) is a process in which a relatively pure stream of carbon dioxide (CO2) from industrial sources is separated, treated and transported to a long-term storage location. For example, the carbon dioxide stream that is to be captured can result from burning fossil fuels or biomass. Usually the CO2 is captured from large point sources, such as a chemical plant or biomass plant, and then stored in an underground geological formation. The aim is to reduce greenhouse gas emissions and thus mitigate climate change.

Carbon dioxide removal

Carbon dioxide removal (CDR), also known as carbon removal, greenhouse gas removal (GGR) or negative emissions, is a process in which carbon dioxide gas () is removed from the atmosphere by deliberate human activities and durably stored in geological, terrestrial, or ocean reservoirs, or in products. In the context of net zero greenhouse gas emissions targets, CDR is increasingly integrated into climate policy, as an element of climate change mitigation strategies.

Direct air capture

Direct air capture (DAC) is the use of chemical or physical processes to extract carbon dioxide directly from the ambient air. If the extracted is then sequestered in safe long-term storage (called direct air carbon capture and sequestration (DACCS)), the overall process will achieve carbon dioxide removal and be a "negative emissions technology" (NET). As of 2022, DAC has yet to become profitable because the cost of using DAC to sequester carbon dioxide is several times the carbon price.

Related publications (13)

Thermo-economic analysis of chemical looping processes

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