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

Kosowska-Golachowska, Monika; Luckos, Adam; Kijo-Kleczkowska, Agnieszka

doi:10.3390/en15030706

Cited by 13 publications

(19 citation statements)

References 37 publications

(68 reference statements)

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“…This manuscript provides a comparative analysis of pollutant emissions during the combustion of energy crops and other fuels such as woody-and agro-biomass and bituminous coal. So, in this respect, it is similar to our previous work [12]. The test apparatus and methodology were the same to make sure the results can be compared.…”

Section: Introductionmentioning

confidence: 85%

“…Three different energy crops were selected for this study, Miscanthus giganteus, Sida hermaphrodita, and Salix viminalis, all originating from plantations in Poland. Agricultural biomass (wheat straw), woody biomass (Scots pine), and Polish bituminous coal were used as the reference fuels; the results of their combustion tests were already presented in reference [12]. Samples of tested fuels were milled and sieved to less than 0.2 mm for proximate and ultimate analyses.…”

Section: Fuel Testedmentioning

confidence: 99%

“…This is associated with the temperature of fuel particles [21]. A higher temperature of the fuel sample causes higher emissions of NO [12]. Additionally, a higher concentration of O 2 in the combustion chamber enhances the combustion of VM and leads to a rise in NO formation.…”

Section: Composition Of Flue Gases During Oxy-combustionmentioning

confidence: 99%

“…The presence of impurities such as N 2 , O 2 , NO x , SO 2 , and other N-and S-containing gases affects the design, energy consumption, and costs of the CO 2 processing unit (CPU). Knowledge of pollutant formation and their concentration is, therefore, important for the design, performance, and cost of the CPU [12].…”

Section: Introductionmentioning

confidence: 99%

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Composition of Flue Gases during Oxy-Combustion of Energy Crops in a Circulating Fluidized Bed

2022

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In recent years, global warming and climate change associated with emissions of CO2 from fossil fuel-fired power systems are a big worry for authorities in many countries worldwide. The utilization of biomass as an alternative, carbon-neutral fuel can reduce emissions of CO2 and other greenhouse gases. Furthermore, the coupling of oxy-combustion of biomass with CO2 capture is an option for carbon-negative power generation technology. In this study, emissions of NOx, SO2, and CO from the air- and oxy-combustion of three energy crops (Miscanthus giganteus, Sida hermaphrodita, and Salix viminalis) are presented and compared with emissions from other biomass fuels and reference coal. Combustion tests in air and O2/CO2 mixtures were conducted in a 12-kW bench-scale CFB combustor at 850 °C. Measurements of flue gas compositions were taken using an FTIR spectrometer. In all tested atmospheres, emissions of SO2, N2O, and CO for biomass were lower than those for the reference coal. The oxidation of volatile nitrogen compounds was behind high emissions of NOx from biomass burned in air and O2/CO2 mixtures. The lowest concentrations of NO were found in the 21% O2/70% CO2 mixture. Combustion in mixtures containing more oxygen (30% and 40% O2) led to a decrease in emissions of N2O and CO and an increase in emissions of NO and SO2.

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Section: Introductionmentioning

confidence: 85%

Section: Fuel Testedmentioning

confidence: 99%

Section: Composition Of Flue Gases During Oxy-combustionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Composition of Flue Gases during Oxy-Combustion of Energy Crops in a Circulating Fluidized Bed

2022

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“…A by-product of hydrogen generation from water electrolysis is oxygen (light-blue arrow in Figure 2). The oxygen might be supplied to oxy-fuel combustion of biomass (e.g., [51,52]) (see bottom left, Figure 2). The heat from the oxy-fuel power plant and the electricity could be fed into the respective grids.…”

Section: Potential Generation Storage and Use Of Hydrogen In Austriamentioning

confidence: 99%

Scenarios to Decarbonize Austria’s Energy Consumption and the Role of Underground Hydrogen Storage

Clemens

2022

Energies

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The European Union is aiming at reaching greenhouse gas (GHG) emission neutrality in 2050. Austria’s current greenhouse gas emissions are 80 million t/year. Renewable Energy (REN) contributes 32% to Austria’s total energy consumption. To decarbonize energy consumption, a substantial increase in energy generation from renewable energy is required. This increase will add to the seasonality of energy supply and amplifies the seasonality in energy demand. In this paper, the seasonality of energy supply and demand in a Net-Zero Scenario are analyzed for Austria and requirements for hydrogen storage derived. We looked into the potential usage of hydrogen in Austria and the economics of hydrogen generation and technology and market developments to assess the Levelized Cost of Hydrogen (LCOH). Then, we cover the energy consumption in Austria followed by the REN potential. The results show that incremental potential of up to 140 TWh for hydropower, photovoltaic (PV), and wind exists in Austria. Hydropower generation and PV is higher in summer- than in wintertime, while wind energy leads to higher energy generation in wintertime. The largest incremental potential is PV, with agrivoltaic systems significantly increasing the area amenable for PV compared with PV usage only. Battery Electric Vehicles (BEV) and Fuel Cell Vehicles (FCV) use energy more efficiently than Internal Combustion Engine (ICE) cars; however, the use of hydrogen for electricity generation significantly decreases the efficiency due to electricity–hydrogen–electricity conversion. The increase in REN use and the higher demand for energy in Austria in wintertime require seasonal storage of energy. We developed three scenarios, Externally Dependent Scenario (EDS), Balanced Energy Scenario (BES) or Self-Sustained Scenario (SSS), for Austria. The EDS scenario assumes significant REN import to Austria, whereas the SSS scenario relies on REN generation within Austria. The required hydrogen storage would be 10.82 bn m3 for EDS, 13.34 bn m3 for BES, and 18.69 bn m3 for SSS. Gas and oil production in Austria and the presence of aquifers indicates that sufficient storage capacity might be available. Significant technology development is required to be able to implement hydrogen as an energy carrier and to balance seasonal energy demand and supply.

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Assessment of the compatibility of biomass-coal blends for cleaner energy utilization and sustainable development

Onochie,

Ofomatah,

Owamah

et al. 2024

Biomass Conv. Bioref.

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

Cited by 13 publications

References 37 publications

Composition of Flue Gases during Oxy-Combustion of Energy Crops in a Circulating Fluidized Bed

Composition of Flue Gases during Oxy-Combustion of Energy Crops in a Circulating Fluidized Bed

Scenarios to Decarbonize Austria’s Energy Consumption and the Role of Underground Hydrogen Storage

Assessment of the compatibility of biomass-coal blends for cleaner energy utilization and sustainable development

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