A review on the progress and prospects of oxy-fuel carbon capture and sequestration (CCS) technology

Yadav, Sujeet; Mondal, Subha

doi:10.1016/j.fuel.2021.122057

Cited by 222 publications

(55 citation statements)

References 109 publications

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“…To mitigate the greenhouse effect caused by the emission of carbon dioxide (CO 2 ), oxy-fuel combustion technology has been investigated and developed [ 1 , 2 ]. In an oxy-combustion process, where a pure or highly enriched oxygen (O 2 ) stream is mixed with recycled flue gas (mainly CO 2 ), the nitrogen (N 2 ) is replaced by CO 2 , and the oxygen concentration in the flue gas is about 30%, higher than that in air combustion.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics Irreversibilities Analysis of Oxy-Fuel Diffusion Flames: The Effect of Oxygen Concentration

Yan

Tang

Wang

et al. 2022

Entropy

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In studies on the combustion process, thermodynamic analysis can be used to evaluate the irreversibility of the combustion process and improve energy utilization efficiency. In this paper, the combustion process of a laminar oxy-fuel diffusion flame was simulated, and the entropy generation due to the irreversibilities of the radiation process, the heat conduction and heat convection process, the mass diffusion process, and the chemical reaction process was calculated. The effect of the oxygen concentration in the oxidizer on the entropy generation was analyzed. The results indicated that, as the oxygen concentration in the oxidizer increases, the radiative entropy generation first increases and then decreases, and the convective and conductive entropy generation, the mass diffusion entropy generation, the chemical entropy generation, and the total entropy generation gradually increase.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics Irreversibilities Analysis of Oxy-Fuel Diffusion Flames: The Effect of Oxygen Concentration

Yan

Tang

Wang

et al. 2022

Entropy

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“…According to the International Energy Agency (IEA, 2017), the global mean temperature has increased by 1 • C above the preindustrial level due to anthropogenic greenhouse gas emissions [5]. The increase in global average temperature is expected to reach 1.5 • C by the end of 2040 [6,7], and it is therefore necessary to take measures to reduce these CO 2 levels.…”

Section: Introductionmentioning

confidence: 99%

“…To reduce these levels, two main carbon capture (CC) technologies are being presented [6,8]: (i) carbon capture, transport and storage technologies (CCS); and (ii) carbon capture and utilisation technologies (CCU). CCSs are primarily aimed at mitigating GHGs when fossil fuels are used for energy generation.…”

Section: Introductionmentioning

confidence: 99%

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Review of the Application of Hydrotalcite as CO2 Sinks for Climate Change Mitigation

2022

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In recent decades, the environmental impact caused by greenhouse gases, especially CO2, has driven many countries to reduce the concentration of these gases. The study and development of new designs that maximise the efficiency of CO2 capture continue to be topical. This paper presents a review of the application of hydrotalcites as CO2 sinks. There are several parameters that can make hydrotalcites suitable for use as CO2 sinks. The first question is the use of calcined or uncalcined hydrotalcite as well as the temperature at which it is calcined, since the calcination conditions (temperature, rate and duration) are important parameters determining structure recovery. Other aspects were also analysed: (i) the influence of the pH of the synthesis; (ii) the molar ratio of its main elements; (iii) ways to increase the specific area of hydrotalcites; (iv) pressure, temperature, humidity and time in CO2 absorption; and (v) combined use of hydrotalcites and cement-based materials. A summary of the results obtained so far in terms of CO2 capture with the parameters described above is presented. This work can be used as a guide to address CO2 capture with hydrotalcites by showing where the information gaps are and where researchers should apply their efforts.

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“…As the world will still depend on coal for several decades to come, it is necessary to develop technologies such as carbon capture and storage (CCS) to significantly reduce emissions of CO 2 and avoid negative consequences of global warming. Among CCS technologies, oxy-fuel combustion emerges as a technically feasible and cost-effective option for the reduction of CO 2 emissions from coal-fired power plants [1][2][3]. When combined with co-firing of biomass-a renewable carbon-neutral fuel-it can offer negative CO 2 emissions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Pollutant Emissions during Oxy-Fuel Combustion of Biomass in a Bench Scale CFB Combustor

2022

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Nowadays oxy-fuel combustion of coal and biomass is the most promising option for the reduction of CO2 emissions from power plants. In this paper, emissions of NOx (NO, NO2, N2O and their precursors, such as NH3 and HCN), SO2 and CO during conventional and oxy-fuel combustion of three kinds of biomass (agro, woody and energy crop) and a reference coal are presented and discussed. Combustion tests were conducted at 850 °C in the laboratory-scale circulating fluidized bed (CFB) reactor in air and O2/CO2 atmospheres. A FTIR spectrometer was used to measure instantaneous concentrations of all pollutants in the flue gas. Emissions of SO2, N2O and CO for the combustion of biomass in all atmospheres were lower than those for the combustion of reference coal. It was found that oxidation of nitrogen species released with volatile matter was responsible for high emissions of NOx during combustion of biomass fuels in air and mixtures of O2 and CO2. The lowest NO emissions for tested fuels were detected in oxy-21 atmosphere (21% O2/70% CO2). Oxy-combustion of biomass in O2/CO2 mixtures at 30% and 40% O2 caused a decrease in emissions of N2O and CO while NO and SO2 emissions increased. The results of this study show that the tested biomass fuels are ideal renewable energy resources both in conventional and oxy-fuel conditions with a minor potential for environmental pollution.

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A review on the progress and prospects of oxy-fuel carbon capture and sequestration (CCS) technology

Cited by 222 publications

References 109 publications

Thermodynamics Irreversibilities Analysis of Oxy-Fuel Diffusion Flames: The Effect of Oxygen Concentration

Thermodynamics Irreversibilities Analysis of Oxy-Fuel Diffusion Flames: The Effect of Oxygen Concentration

Review of the Application of Hydrotalcite as CO2 Sinks for Climate Change Mitigation

Pollutant Emissions during Oxy-Fuel Combustion of Biomass in a Bench Scale CFB Combustor

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