NOx and SO2 emissions of coals, biomass and their blends under different oxy-fuel atmospheres

Moroń, Wojciech; Rybak, W.

doi:10.1016/j.atmosenv.2015.06.013

Cited by 85 publications

(40 citation statements)

References 35 publications

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“…Figure shows the effect of fuel blending on emission characteristics in both air and oxyfuel combustion conditions, reported by Moroń and Rybak . They reported reduced NO x and SO 2 emission due to the blending of biomass with coal.…”

Section: Aspects Of Coal Combustionsupporting

confidence: 81%

“…Variation of (A) NO x and (B) SO 2 emission with varying content of wood pellets under different atmospheres…”

Section: Aspects Of Coal Combustionmentioning

confidence: 99%

“…Figure 10 shows the effect of fuel blending on emission characteristics in both air and oxyfuel combustion conditions, reported by Moroń and Rybak. 119 They reported reduced NO x and SO 2 emission due to the blending of biomass with coal. The similar effect of fuel blending on NO x and SO 2 emission was also reported by Riaza et al 19 Backreedy et al 120 reported reduced NO concentration for the coal blends than single coal.…”

Section: Emissions From Pulverized Coal Furnacesmentioning

confidence: 99%

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A complete review based on various aspects of pulverized coal combustion

Yadav

Mondal

2019

Int J Energy Res

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Summary Coal is the most abundant energy source, and around 40% of the world's electricity is produced by coal combustion. The emission generated through it put a constraint on power production by coal combustion. There is a need to reduce the emissions generated through it to utilize the enormous energy of coal for power production. Detailed understanding of various aspects of coal combustion is required to reduce the emissions from coal‐fired furnaces. The aim of present paper is to review various aspects of pulverized coal combustion such as oxy‐fuel combustion, co‐combustion of coal and biomass, emissions from pulverized coal furnaces, ash formation and deposition, and carbon capture and sequestration (CCS) technologies to outline the progress made in these aspects. Both experimental and numerical aspects are included in this review. This review also discusses the thermodynamic aspects of the combustion process. Furthermore, the effect of various submodels such as devolatilization models, char combustion models, radiation models, and turbulent models on the process of pulverized coal combustion has been investigated in this paper.

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Section: Aspects Of Coal Combustionsupporting

confidence: 81%

“…Variation of (A) NO x and (B) SO 2 emission with varying content of wood pellets under different atmospheres…”

Section: Aspects Of Coal Combustionmentioning

confidence: 99%

Section: Emissions From Pulverized Coal Furnacesmentioning

confidence: 99%

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A complete review based on various aspects of pulverized coal combustion

Yadav

Mondal

2019

Int J Energy Res

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“…In contrast, many researchers via studying the oxygen concentration reached a uniform conclusion that an oxidizing atmosphere promoted NOX formation (Zhu et al 2015). Regarding the blending ratio, some believed that a combination with biomass could inhibit NOX emissions (Moroń and Rybak 2015;Gao et al 2016;Yu et al 2016), while others observed the opposite to be true (Duan et al 2015).…”

Section: Introductionmentioning

confidence: 97%

Study on NO Emission in the Oxy-Fuel Combustion of Co-Firing Coal and Biomass in a Bubbling Fluidized Bed Combustor

Zan

et al. 2017

BioResources

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Combustion experiments were performed in a bubbling bed combustor to explore the effects of various oxygen concentrations (21% to 40%), temperatures (850 °C to 950 °C), and mixing ratios (0% to 30%) on the formation of NO gas. In order to correspond to different combustion stages, the generated NO were distinguished as volatile-NO and coke-NO, respectively, and the total amount and the conversion rate of NO were analyzed. The results indicated that NO comes mainly from fixed carbon combustion, and an increased oxygen concentration in the environment could produce more NO during the combustion process, regardless of the blending of biomass. The temperature increase promoted the conversion of nitrogen in the anthracite and accelerated the release of volatiles from the pine powder. During mixed combustion with increasing temperature, the volatiles formed had diluted the environmental oxygen concentration, which led to suppressed NO emissions. In addition, increasing the blending ratio also resulted in decreased NO emissions due to the large amount of intermediates released by the burning pine powder that induced a deoxidation effect on the NO emission.

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“…The annual world output of crop residues contains a surprising amount of energy [1][2][3]. Compared with fossil fuels, the effective utilization of crop residues could help realize the sustainable and ecologically sound development, and reduce the emissions of CO x , NO x , and SO x atmospheric pollutants [4,5]. For this reason, alternatives to the disposal of crop residues are being increasingly considered attractive approaches for coping with both environmental issues and the increasing global demand for energy over the past decades in the worldwide [6,7].…”

Section: Introductionmentioning

confidence: 99%

Twenty-two compositional characterizations and theoretical energy potentials of extensively diversified China's crop residues

Niu

Han

Liu

et al. 2016

Energy

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Knowledge of the compositional properties of crop residues feedstocks is important for process control and handling of co-products and waste from energy utilization. In this study, 1076 crop residues were collected from 326 sites across China. Chemical analysis of five organic chemical compositions, four proximate compositions, five ultimate compositions and eight mineral elements were conducted. Energy potentials of crop residues in China were quantified based on their compositional characterization. Results showed that the compositional characteristics of wheat straw, rice straw, corn stover, rape stalk and cotton stalk were shown to be significant different (p < 0.05) and highly variable. The coefficients of variation were negatively correlated with the means of crop residues compositions. Principal component analysis reflected that the compositions could explain several variations and clustering rules of the five crop residues. The correlations among parameters could be briefly summarized as hemicelluloses/ash-cellulose/lignin/water soluble carbohydrates/crude protein/P, water soluble carbohydrates-crude protein, crude protein-N-P-Mg-Cu, volatile matter-ash-fixed carbon, C-H-ON -S, P-K-Na-Ca and ash-C/H/O/K (p <0.01). The energy potentials of the five substrates were also significantly different (p < 0.05). The higher heating values, theoretical ethanol yields, and theoretical biomethane yields of the crop residues were 12.97-18.58 MJ/kg, 336.69-658.25 g/kg, and 151.48-288.45 L/kg, respectively.

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NOx and SO2 emissions of coals, biomass and their blends under different oxy-fuel atmospheres

Cited by 85 publications

References 35 publications

A complete review based on various aspects of pulverized coal combustion

A complete review based on various aspects of pulverized coal combustion

Study on NO Emission in the Oxy-Fuel Combustion of Co-Firing Coal and Biomass in a Bubbling Fluidized Bed Combustor

Twenty-two compositional characterizations and theoretical energy potentials of extensively diversified China's crop residues

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