Comparison of Emissions and Efficiency of Two Types of Burners When Burning Wood Pellets from Different Suppliers

Pełka, Grzegorz; Jach-Nocoń, Marta; Paprocki, Marcin; Jachimowski, Artur; Luboń, Wojciech; Nocoń, Adam; Wygoda, Mateusz; Wyczesany, Paweł; Pachytel, Przemysław; Mirowski, Tomasz

doi:10.3390/en16041695

Cited by 7 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the length of Ebenopsis ebano pellets (17.37_1.61 mm) was longer than the Acacia wrightii (13.17_0.82 mm) and Havardia pallens (13.44_0.99.mm) pellets, the pellets of Ebenopsis ebano, Havardia pallens, and Acacia wrightii have length/diameter ratios of 2.88_0.27, 2.23_0.17, and 2.17_0.15, respectively. Another research conducted by [44] acknowledged that All of the pellets made from rice straw had a cylindrical shape with an average diameter of eight (8) mm and a length of ten (10) mm. A substance's Moisture content is identified as the most critical element influencing pellet quality [45].…”

Section: Discussionmentioning

confidence: 99%

“…Reducing the use of fossil fuels is a key challenge in the modern world. This is also important because it is estimated that by 2050, only about fourteen (14%) of proven oil reserves, seventy-two (72%) of proven coal reserves, and eighteen (18%) of proven gas reserves will remain [8]. The shortage of energy sources leads to price increases, a source of economic concerns, particularly in developing countries [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Environmental and Socio-Economic Assessment of Biomass Pellets Biofuel in Hazara Division, Pakistan

et al. 2023

View full text Add to dashboard Cite

A thorough life cycle assessment (LCA) was conducted to determine whether wood pellets were a viable substitute for non-renewable fuels like oil and gas, especially for heating. To evaluate the properties of wood pellets and their effects on the environment, the study was conducted in the Hazara division of Khyber Pakhtunkhwa, Pakistan. A few factors were investigated, including the carbon and water footprints and the identification of potential growth opportunities in the production of wood pellets. One kilogram of wood pellets served as the analysis reference unit. Raw materials were obtained from sawmills and furniture stores to make the wood pellets. Sawdust, a bio binder, and lubricating oil were used in the production process along with the pelletizer machine. SimaPro 9.2 software was used in the environmental footprint assessment to evaluate several environmental effects, including eutrophication, ozone depletion, abiotic depletion, rusting, human toxicity, and aquatic ecotoxicity. The highest contribution was shown by the wood pellets produced from the softwood sawdust as 149.8558 in marine aquatic ecotoxicity. The study’s findings showed that using lubricating oil during the production of wood pellets significantly affected the overall environmental results. The characterization of wood pellets showed that the Higher heating Values (HHV) resulted from burning wood pellets made from sawdust of Melia azedarach as 24.79 MJ/kg. Softwood mixed species recorded the highest water footprint and damage assessment impact and the highest carbon footprint of 0.186 CO2 e. With a 3.84 × 10−7 DALY (disability-adjusted life years) measurement, softwood mixed species showed the highest contribution to human health damage among the damage categories. In terms of cost, producing one kilogram of wood pellets from softwood mixed species was priced at 22 PKR, the lowest among the assessed species. The highest cost of 26 PKR was associated with producing wood pellets from Parthenium hysterophorus and Diospyros lotus.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Environmental and Socio-Economic Assessment of Biomass Pellets Biofuel in Hazara Division, Pakistan

et al. 2023

View full text Add to dashboard Cite

show abstract

“…However, the obtained results can be considered comparable with the results of other works. Pelełka et al [56], during the combustion of wood pellets in a 200 kW boiler, recorded CO concentrations ranging from 78.5 to 201.2 mg•m −3 , NO x from 150 to 204 mg•m −3 and dust from 12.4 to 21.8 mg•m −3 . Air pollutant emissions from a 200 kW boiler were studied by Archan et al [57], and they obtained concentrations lower than the results of this study, ranging for CO from 12 to 60 mg•m −3 , for NO x from 84 to 119 mg•m −3 and for dust from 4 to 27 mg•m −3 .…”

Section: % Wood Pelletsmentioning

confidence: 99%

Air Pollutants Emission during Co-Combustion of Animal Manure and Wood Pellets in 15 kW Boiler

Rzeźnik,

Mielcarek-Bocheńska

et al. 2023

Energies

View full text Add to dashboard Cite

One of the aims of the environmental and energy policy of the European Union is to reduce the emission of air pollutants, primarily from heat and electricity production, e.g., using renewable energy sources. An example of such a fuel is agricultural biomass including animal manure, which can be used to produce energy in many ways, inter alia direct combustion. The aim of the study was to measure the concentration of NO, NOx, CO, dust and boiler efficiency during the combustion and co-combustion of wood and manure pellets. The research was conducted in the laboratory of the Poznań University of Technology using a 15 kW domestic boiler at maximum power. Manure pellets had higher moisture—9.2%, lower high heating value—17.25 MJ·kg−1, lower low heating value—16.45 MJ·kg−1, and higher ash content—11.23% than wood pellets. The average concentrations of CO, NO, NOx and dust for 100% wood pellets were 198 ± 27 mg·m−3, 129 ± 5 mg·m−3, 198 ± 8 mg·m−3 and 8.7 ± 0.5 mg·m−3, respectively. For this, the fuel boiler power was 13.6 kW (air–fuel ratio 1.48), and it was close to the maximal nominal power. Increasing the share of manure pellets in the burning mixture worsened the stability of the combustion process, and the occurrence of incomplete combustion was observed, which resulted in an increased concentration of CO and dust. Additionally, NO and NOx concentrations also increased. The average boiler power during the combustion of 100% manure pellets was 7.8 kW (air–fuel ratio 2.2), and the average concentrations of CO, NO, NOx and dust were 1548 ± 555 mg·m−3, 355 ± 53 mg·m−3, 554 ± 88 mg·m−3 and 482 ± 63 mg·m−3, respectively.

show abstract

“…They mostly replace older generation multi-fuel boilers, which are very inefficient, especially when burning wood logs. A low-cost and quick improvement in energy efficiency and ecological energy production can be achieved by modernizing old gratefired coal-fired boilers with the use of automatically dosing fuel-dosing burners powered by plant biofuels [44][45][46][47][48]. Pellets are mainly produced from the sawdust of coniferous or deciduous trees from debarked stems.…”

Section: Introductionmentioning

confidence: 99%

Combustion Efficiency of Various Forms of Solid Biofuels in Terms of Changes in the Method of Fuel Feeding into the Combustion Chamber

Dula,

Kraszkiewicz,

Parafiniuk

2024

Energies

View full text Add to dashboard Cite

This study analyzes the combustion of pellets and briquettes made of plant biomass in low-power heating devices powered periodically with fuel being placed on the grate, as well as after modification using an automatic fuel feeding system in the gutter burner. The use of herbaceous biomass in the form of pellets in low-power heating devices with automatic fuel feeding and combustion in a gutter burner is not widely promoted and popular. Therefore, this study used four types of herbaceous waste biomass (wheat straw, rye straw, oat straw and hay) and one type of woody waste biomass (birch sawdust) for testing. The basic chemical characteristics were determined for the raw materials. After appropriate preparation, the selected starting materials were subjected to briquetting and pelleting processes. Selected physical properties were also determined for the obtained biofuels. Biofuels made from birch sawdust had the lowest heat value (16.34 MJ·kg−1), although biofuels made from wheat, rye and hay straw had a slightly lower calorific value, respectively: 16.29; 16.28 and 16.26 MJ·kg−1. However, the calorific value of oat straw biofuels was only 15.47 MJ kg−1. Moreover, the ash content for herbaceous biomass was 2–4 times higher than for woody biomass. Similar differences between herbaceous and woody biomass were also observed for the nitrogen and sulfur content. To burn the prepared biofuels, a domestic grate-fired biomass boiler was used, periodically fed with portions of fuel in the form of pellets or briquettes (type A tests), which was then modified with a gutter burner enabling the automatic feeding of fuel in the form of pellets (type B tests). During the combustion tests with simultaneous timing, the concentration of CO2, CO, NO and SO2 in the exhaust gases was examined and the temperature of the supplied air and exhaust gases was measured. The stack loss (qA), combustion efficiency index (CEI) and toxicity index (TI) were also calculated. The research shows that the use of automatic fuel feeding stabilizes the combustion process. The combustion process is balanced between herbaceous and woody biomass biofuels. Disparities in CO2, CO and Tgas emissions are decreasing. However, during type B tests, an increase in NO emissions is observed. At the same time, the research conducted indicates that the combustion of herbaceous biomass pellets with their automatic feeding into the combustion chamber is characterized by an increase in combustion efficiency, indicating that when the combustion process is automated, they are a good replacement for wood biofuels—both pellets and briquettes.

show abstract

Comparison of Emissions and Efficiency of Two Types of Burners When Burning Wood Pellets from Different Suppliers

Cited by 7 publications

References 17 publications

Environmental and Socio-Economic Assessment of Biomass Pellets Biofuel in Hazara Division, Pakistan

Environmental and Socio-Economic Assessment of Biomass Pellets Biofuel in Hazara Division, Pakistan

Air Pollutants Emission during Co-Combustion of Animal Manure and Wood Pellets in 15 kW Boiler

Combustion Efficiency of Various Forms of Solid Biofuels in Terms of Changes in the Method of Fuel Feeding into the Combustion Chamber

Contact Info

Product

Resources

About