The co-combustion of hard coal with raw and torrefied biomasses (willow (Salix viminalis), olive oil residue and waste wood from furniture manufacturing)

Kopczyński, M.; Lasek, Janusz; Iluk, Andrzej; Zuwała, J.

doi:10.1016/j.energy.2017.04.036

Cited by 63 publications

(29 citation statements)

References 53 publications

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“…The concentration of additives in fuels can normally vary from 5% to 20%. Such ratio is quite typical when recovering oil production waste [8], residual wood [44], sunflower hulls [45], and rapeseed oil [46] by co-firing them with coal fuels. When burning coal-water fuels based on coal processing waste, which is abundant at industrial landfills, adding a relatively small amount of other combustible components with different generation rates makes it possible to recover a group of different kinds of waste by co-firing them.…”

Section: Methodsmentioning

confidence: 99%

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Relative Environmental, Economic, and Energy Performance Indicators of Fuel Compositions with Biomass

et al. 2020

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The present study deals with the experimental research findings for the characteristics of ignition (ignition delay times, minimum ignition temperature) and combustion (maximum combustion temperature, concentration of anthropogenic emission), as well as theoretical calculations of integral environmental, economic, and energy performance indicators of fuel compositions based on coal processing waste with the most typical types of biomass (sawdust, leaves, straw, oil-containing waste, and rapeseed oil). Based on the results of the experiments, involving the co-combustion of biomass (10% mass) with coal processing waste (90% mass) as part of slurry fuels, we establish differences in the concentrations of NOx and SOx in the gaseous combustion products. They make up from 36 to 218 ppm when analyzing the flue gases of coal and fuel slurries. Additionally, the values of relative environmental, economic, and energy performance indicators were calculated for a group of biomass-containing fuel compositions. The calculation results for equal weight coefficients are presented. It was shown that the efficiency of slurry fuels with biomass is 10%–24% better than that of coal and 2%–8% better than that of filter-cake without additives. Much lower anthropogenic emissions (NOx by 25%–62% and SOx by 61%–88%) are confirmed when solid fossil fuels are partly or completely replaced with slurry fuels.

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Section: Methodsmentioning

confidence: 99%

“…There are still discussions about the most rational approaches to the conversion of biomass [2,6,7]. There are known results for its co-combustion with solid fossil fuels (coals of different grades) [7,8]…”

Section: Introductionmentioning

confidence: 99%

Relative Environmental, Economic, and Energy Performance Indicators of Fuel Compositions with Biomass

et al. 2020

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“…It is important to find alternative sources of biofuels for the implementation of the commitments given to the European Union and not only to use natural wood for energy. Fast rotation plants, such as willows, are the most suitable for this [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of moisture on osier willow chops characteristics

Zvicevičius

Raila

Čiplienė

et al. 2019

Engineering for Rural Development

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The world energy demand and declining fossil fuel resources make renewable energy resources to receive increased attention. Lithuania is sufficiently rich in renewable natural resources, and energy can be used from various types of solid biofuels, without being tied to fossil fuels, which have to be imported from other countries. Osier willows (Salix vinimalis) are one of the most cultured short rotations sprouts in the energetic plantations. These sprouts are willows which grow as bushes and have almost equal diameter and height of perennial stems. Preparing osier willows for fuel, the trunks of the trees are felled every four years, usually in the cold season. Osier willows are chopped by various shredders in the process after the removal of branches and leaves. Cutting willows in other seasons leads to the high moisture content and the biological activity of carving and other significant features: density, porosity, thermal conductivity, self-heating and other properties. According to the experiments, the highest biological activity (747 ± 43.5-379 ± 34.7 W·t -1 ) is characterized by willow chaff from 50.4 ± 0.14 % to 30.0 ± 0.075 % humidity. When the humidity reaches 11.6 ± 0.11 %, the wood carving becomes biologically inactive. It was found that the thermal and temperature conductivity of wood carving differ based on the difference in moisture. The maximum values of the temperature field (21.56 m 2 ·s -1 and 19.39 m 2 ·s -1 ) were fixed, when the chopped osier willow moisture was 30.0 ± 0.075 % and 38.4 ± 0.088 % respectively. Moreover, it is observed that, when the osier willow dries from 50.4 ± 0.14 % to 11.6 ± 0.11 % of moisture, its true wood density decreases by 21.2 % -from 808 ± 11.25 kg·m -3 to 637 ± 63.5 kg·m -3 . The density of the chopped osier willow decreased by 28.1 % -from 433 ± 5.13 kg·m -3 to 311 ± 3.05 kg·m -3 .

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“…Therefore, hard and brown coal and wood are often used as a basic fuel for heating buildings [13,14]. It should also be noted that more energy-efficient boilers are more expensive than the popular non-ecological old-coal boilers in Poland, in which fuel is burned at too low temperatures [15].…”

Section: Economic Factors Affecting the Generation Of Low Emissionmentioning

confidence: 99%

Economic Conditions of Low Emission Reduction in Poland

Piwowar¹,

Dzikuć²,

Kułyk³

et al. 2018

dtcse

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Abstract. The air quality in Poland is one of the worst in the entire European Union. A lot of factors affect a large amount of pollutants that get into the air. The most important of them include heating buildings, road transport and the functioning of industry. A large part of the pollutants that get into the air belongs to low emission, which appears at a low altitude above ground level (up to 40 m). In Poland there are exceedances of harmful substances in the air due to the lack of solutions that exist in other EU countries. However, these solutions are often costly and the authorities in Poland in recent years have not taken action that would help to solve the problem of poor air quality. The paper presents economic conditions that are related to reducing emissions in Poland.

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The co-combustion of hard coal with raw and torrefied biomasses (willow (Salix viminalis), olive oil residue and waste wood from furniture manufacturing)

Cited by 63 publications

References 53 publications

Relative Environmental, Economic, and Energy Performance Indicators of Fuel Compositions with Biomass

Relative Environmental, Economic, and Energy Performance Indicators of Fuel Compositions with Biomass

Influence of moisture on osier willow chops characteristics

Economic Conditions of Low Emission Reduction in Poland

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