Fluidized bed reactor design study for pressurized chemical looping combustion of natural gas

Zerobin, Florian; Penthor, Stefan; Bertsch, Otmar; Pröll, Tobias

doi:10.1016/j.powtec.2017.02.001

Cited by 30 publications

(11 citation statements)

References 25 publications

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“…A minimum of two reactors must be employed for assuring a continuous high-temperature gas stream supply to the downstream turbine [20]. In this configuration, CLC is considered a viable option for efficient power production with inherent carbon capture and increased efficiency as gas turbine technology can be used in a combined cycle for achieving high electric efficiencies, comparable to state-of-the-art gas turbine combined cycle (GTCC) [75].…”

Section: Packed-bed Systemsmentioning

confidence: 99%

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

et al. 2020

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This review aims to give more understanding of the selection and development of oxygen carrier materials for chemical looping. Chemical looping, a rising star in chemical technologies, is capable of low CO2 emissions with applications in the production of energy and chemicals. A key issue in the further development of chemical looping processes and its introduction to the industry is the selection and further development of an appropriate oxygen carrier (OC) material. This solid oxygen carrier material supplies the stoichiometric oxygen needed for the various chemical processes. Its reactivity, cost, toxicity, thermal stability, attrition resistance, and chemical stability are critical selection criteria for developing suitable oxygen carrier materials. To develop oxygen carriers with optimal properties and long-term stability, one must consider the employed reactor configuration and the aim of the chemical looping process, as well as the thermodynamic properties of the active phases, their interaction with the used support material, long-term stability, internal ionic migration, and the advantages and limits of the employed synthesis methods. This review, therefore, aims to give more understanding into all aforementioned aspects to facilitate further research and development of chemical looping technology.

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Section: Packed-bed Systemsmentioning

confidence: 99%

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

et al. 2020

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“…Thus, although CLC imposes almost no direct energy penalty for CO2 capture, the indirect energy penalty involved in running the combined power cycle from a lower starting temperature is considerable. Depending on the CLC reactor temperature selected and the reference plant TIT, the resulting power plant efficiency can be well below that of NGCC benchmarks with post-combustion CO2 capture [142]. This problem can be mitigated by including an additional combustor downstream of the CLC reactors to increase the stream temperature to the operating level of the gas turbine.…”

Section: Chemical Looping Combustionmentioning

confidence: 99%

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Osman

Khan

Zaabout

et al. 2021

Fuel Processing Technology

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Chemical looping has great potential for reducing the energy penalty and associated costs of CO2 capture from fossil fuel-based power and chemical production while maintaining high efficiency. However, pressurized operation is a prerequisite for maximizing energy efficiency in most proposed chemical looping configurations, introducing significant complexities related to system design, operation and scale-up. Understanding the effects of pressurization on chemical looping systems is therefore important for realizing the expected cost reduction of CO2 capture and speed up the industrial deployment of this promising class of technologies.This paper reviews studies that investigated three key aspects associated with pressurized operation of chemical looping processes. First, the effect of pressure on the kinetics of the various reactions involved in these processes was discussed. Second, the different reactor configurations proposed for chemical looping were discussed in detail, focusing on their suitability for pressurized operation and highlighting potential technical challenges that may hinder successful operation and scale-up. Third, techno-economic assessment studies for these systems were reviewed, identifying the process configuration and integration options that maximize the energy efficiency and minimize the costs of CO2 avoidance.Prominent conclusions from the review include the following. First, the frequently reported negative effect of pressure on reaction kinetics appears to be overstated, implying that pressurization is an effective way to intensify chemical looping processes. Second, no clear winner could be identified from the six pressurized chemical looping reactor configurations

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“…The combination of CLC and GTs can decrease the efficiency of a combined cycle power plant from 60% to about 40.34% [7]. This implies the need of more natural gas to be burned to maintain the same electricity production.…”

Section: Fig 1 Chemical Looping Combustion (Clc) Technologymentioning

confidence: 99%

Technical Economic and Environmental analysis of Chemical Looping versus oxyfuel combustion for NGCC power plant

et al. 2021

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The Power Sector is undergoing a rapid technological change with respect to implementation of low carbon technologies. The IEA Energy Outlook 2017 shows that the investments in Renewables for the first time are equal to those on the fossil sources. It is likely that the conventional gas turbines and internal combustion engines will need to be integrated in systems employing biofuels and/or CCUS (Carbon Capture Usage and Storage). Also, the European Union is moving rapidly towards low carbon technologies (i.e. Energy Efficiency, Smart Grids, Renewables and CCUS), see the Energy Union Strategy. Currently 28% of the installed power capacity in Europe is based on natural gas plants. Gas-based power capacity has reached 418 GW in 2016 and is likely to continue to grow in the future. To efficiently capture the carbon dioxide emissions generated by the combustion of natural gas in the combustion chamber a possible solution could be to adopt new combustion processes, like Chemical Looping Combustion. The combination of CLC and GTs can decrease the efficiency of a combined cycle power plant from 60% to about 40.34%. These performances influence costs and environmental burdens and this is also the same for oxyfuel combustion, which is a competing technology to realize CCS. This paper, starting from literature mass and energy balances of a conventional combined cycle, a combined cycle coupled with chemical looping combustor and a combined cycle coupled with oxyfuel combustion, calculates the reduction of CO2 emissions which can be achieved during the whole life cycle of the power plant and then identifies the value of the carbon credit which is needed to have an interesting payback period for such kind of investment.

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Fluidized bed reactor design study for pressurized chemical looping combustion of natural gas

Cited by 30 publications

References 25 publications

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Technical Economic and Environmental analysis of Chemical Looping versus oxyfuel combustion for NGCC power plant

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