Numerical investigation of the effect of air supply and oxygen enrichment on the biomass combustion in the grate boiler

Zhou, Anqi; Xu, Hongpeng; Tu, Yaojie; Zhao, Feiyang; Zheng, Zhifeng; Yang, Wenming

doi:10.1016/j.applthermaleng.2019.04.053

Cited by 42 publications

(11 citation statements)

References 32 publications

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“…The reason for this phenomenon is that the exhaust heat loss is closely related to the flue gas flow. The greater the excess air ratio was, the greater the flue gas flow would be, and the exhaust heat loss increased significantly, 44 resulting in the temperatures decreased in all zones.…”

Section: Resultsmentioning

confidence: 99%

Influence of Operating Parameters on Chlorine Release and Pollutant Emission Characteristics of a 130 t/h BCFB Combustion System

Liu

et al. 2021

ACS Omega

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A 130 t/h biomass circulating fluidized bed (BCFB) boiler combustion system model, considering the chloride release and pollutant emissions during the biomass combustion, was established using the Modelica language. The effects of the biomass feed amount, limestone amount, excess air coefficients, and different ratios of primary and secondary air on the boiler furnace temperature and flue gas composition (O 2 , CO 2 , SO 2 , HCl, and KCl) were investigated. Upon the biomass feed amount step change, the variation ranges of NO and KCl concentrations were very large, which were 18.58 and 21.16% of the before step value, respectively. The step change of the limestone input had little effect on b ed temperature in the dense phase zone, but it could obviously reduce the SO 2 concentration. The concentration of SO 2 in flue gas decreased by 22.56% when the limestone input increased by 50%. The removal rate of SO 2 gradually decreased with the increase of the limestone amount. The SO 2 desulfurization rate decreased by 68.30% when the amount of limestone increased from 0.0275 to 0.0825 kg/s. More NO would be generated and KCl concentration would be significantly reduced with the increase of the excess air coefficient. When the ratio of primary and secondary air was 4:6, the NO concentration in flue gas was lower than 86.06 mg/Nm 3 .

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Section: Resultsmentioning

confidence: 99%

Influence of Operating Parameters on Chlorine Release and Pollutant Emission Characteristics of a 130 t/h BCFB Combustion System

Liu

et al. 2021

ACS Omega

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“…are considered as one of the most reliable sources of alternative energy (Zhou et al, 2019). Unfortunately, because of the variability in the composition of fuel, these fuel sources suffer from low combustion stability and boiler efficiency (Demirbas, 2005).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Waste to Energy: Air Pollutant Emissions from the Steam Boilers Using Recycled Waste Wood

Tsai

Lin

How

et al. 2021

Aerosol Air Qual. Res.

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“…The biomass encompasses a large variety of materials, including wood from various sources, agricultural residues, and animal and human waste. [3]. Zgodavová et.al.…”

Section: Literature Reviewmentioning

confidence: 99%

Economic Life Cycle of Biomass Equipment and its Renovation

Teplická¹,

Kovac²,

Škvareková³

et al. 2020

TEM Journal

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The main goal of this article is to determine the optimal time period of boiler for biomass renewal, because its usage affects the financial situation of the firm in the form of costs. In this contribution is applied the method of operational research - the method of optimal time of machine renovation. The results of the analyses point to the optimal period of biomass boiler renovation before its service life in the 11th year. Operating costs are increasing about 9% after this time. By using this model there is ability to plan financial sources for buying new biomass boiler at 5500-15600€ on the market. The scientific benefit lies in the fact that the model is applicable to all types of equipment and machinery, in various industrial areas and in services and it is preventive instrument for financial planning for machine renovation.

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Numerical investigation of the effect of air supply and oxygen enrichment on the biomass combustion in the grate boiler

Cited by 42 publications

References 32 publications

Influence of Operating Parameters on Chlorine Release and Pollutant Emission Characteristics of a 130 t/h BCFB Combustion System

Influence of Operating Parameters on Chlorine Release and Pollutant Emission Characteristics of a 130 t/h BCFB Combustion System

Waste to Energy: Air Pollutant Emissions from the Steam Boilers Using Recycled Waste Wood

Economic Life Cycle of Biomass Equipment and its Renovation

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