Recent advances of research in coal and biomass co-firing for electricity and heat generation

Liu, Li; Memon, Muhammad Zaki; Xie, Yuanbo; Gao, Shitie; Guo, You; Dong, Jingliang; Gao, Yuan; Li, Aimin; Ji, Guozhao

doi:10.1016/j.cec.2023.100063

Cited by 9 publications

(2 citation statements)

References 122 publications

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“…The method proposed and implemented in many countries, which consists in adding various biomass wastes to coal, has proved to be a way out of a difficult situation that can lead to the shutdown of a coal-fired boiler or thermal power plant due to high levels of harmful emissions. The main advantages of switching to combustion of solid fuel mixture based on coal and biomass are as follows [15][16][17][18][19][20][21][22]:…”

Section: Introductionmentioning

confidence: 99%

Experimental Combustion of Different Biomass Wastes, Coals and Two Fuel Mixtures on a Fire Bench

Zhuikov,

Zemlyanskiy,

Grishina

et al. 2024

Sustainability

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When designing settlements according to the “Green Building” principle, it is necessary to develop a heating system based on climatic conditions. For example, in areas with a sharply continental climate (cold and prolonged winters), it is sometimes necessary to use solid fuel boilers (in the absence of gas). However, to use these, it is necessary to use biomass or biomass-coal blends as fuel to increase their combustion heat. The addition of biomass waste to coal can be aimed at achieving various objectives: utilization of biomass waste; reduction of solid fossil fuel consumption; improvement of environmental performance at coal-fired boiler houses; improvement of the reactivity of coals or to improve the technical and economic performance of heat-generating plants due to the fact that biomass is a waste from various types of production, and its cost depends only on the distance of its transportation to the boiler house. In this work, combustion of various biomass wastes, including sewage sludge, was carried out on a fire bench emulating the operation of a boiler furnace. Fuel particles were ignited by convective heat transfer in a stream of hot air at a velocity of 5 m/s in the temperature range of 500–800 °C, and the experimental process was recorded on a high-speed, color video camera. The obtained values were compared with the characteristics of different coals used in thermal power generation (lignite and bituminous coal). The aim of the work is to determine the reactivity of various types of biomass, including fuel mixtures based on coal and food waste. The work presents the results of technical and elemental analysis of the researched fuels. Scanning electron microscopy was used to analyze the fuel particle surfaces for the presence of pores, cracks and channels. It was found that the lowest ignition delay is characteristic of cedar needles and hydrolyzed lignin; it is four times less than that of lignite coal and nine times less than that of bituminous coal. The addition of hydrolysis lignin to coal improves its combustion characteristics, while the addition of brewer’s spent grain, on the contrary, reduces it, increasing the ignition time delay due to the high moisture content of the fuel particles.

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Section: Introductionmentioning

confidence: 99%

Experimental Combustion of Different Biomass Wastes, Coals and Two Fuel Mixtures on a Fire Bench

Zhuikov,

Zemlyanskiy,

Grishina

et al. 2024

Sustainability

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“…However, this reliance on coal has resulted in a depletion of traditional fossil fuel reserves and a surge in pollutant emissions. In response, the concurrent combustion of coal and biomass in coal-fired boilers emerges as a complementary energy solution, offering a promising strategy to address both fuel scarcity and environmental concerns [1]. Biomass is often referred to as "zero-carbon energy" due to its capacity for carbon neutrality.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Power Generation System with Co-Combustion of Coal and Torrefied Biomass by Flue Gas

Song,

Guo,

Ren

et al. 2024

Energies

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At present, there is a global rise in electricity consumption, leading to an accelerated depletion of natural resources due to the reliance on fossil fuels to fulfill this energy demand. Consequently, there exists a worldwide emphasis on enhancing the proportion of renewable energy sources in electricity generation. Biomass, as a renewable energy source, presents a viable alternative to certain fossil energy sources for combustion in electricity generation. This study focuses on a 660 MW coal-fired power plant as the subject of investigation, employing Aspen Plus simulation software (V11) to replicate the operational dynamics of the plant. A model of the direct mixed combustion biomass system within the coal-fired boiler is constructed, and its accuracy is validated against operational data obtained from the power plant. Moreover, a model elucidating the direct co-combustion of biomass in a coal-fired boiler, augmented by flue gas recirculation, was developed through the integration of biomass pre-treatment and flue gas recirculation technologies. This study explores the impacts of varying biomass blending ratios and flue gas recirculation on parameters, including flue gas volume, power generation efficiency, boiler performance, water vapor content, and emissions of pollutants. These findings indicate an inverse relationship between the mixing ratio and various performance metrics as follows: power generation, boiler efficiency, as well as NOX and SO2 content, with larger mixing ratios resulting in diminished values. Furthermore, the incorporation of flue gas recirculation was observed to mitigate furnace temperatures and suppress NOX emissions.

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Emission and distribution characteristics of PCDD/Fs during the co-processing of various solid wastes in coal-fired boilers in China

Cui,

Yan,

Liu

et al. 2024

Environmental Pollution

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Recent advances of research in coal and biomass co-firing for electricity and heat generation

Cited by 9 publications

References 122 publications

Experimental Combustion of Different Biomass Wastes, Coals and Two Fuel Mixtures on a Fire Bench

Experimental Combustion of Different Biomass Wastes, Coals and Two Fuel Mixtures on a Fire Bench

Simulation of Power Generation System with Co-Combustion of Coal and Torrefied Biomass by Flue Gas

Emission and distribution characteristics of PCDD/Fs during the co-processing of various solid wastes in coal-fired boilers in China

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