Co-firing pellet of torrefied corncob and khat stem mixture with coal on combustion efficiency and parametric optimization

Daba, Bulcha Jifara; Hailegiorgis, Sintayehu Mekuria

doi:10.1007/s10973-023-12004-8

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…The combustion efficiency of biomass is significantly influenced by two crucial parameters, namely density and moisture content (Ramos et al, 2022). Therefore, the utilization of pelleted forest residue in combustion by itself or co-combustion with coal has the potential to enhance combustion efficiency (Borowski, 2022;Daba et al, 2023). For example, Ghorashi and Khandelwal (2023) indicated that the effectiveness of boilers utilizing pellets ranged from 5% to 90%, whereas wood-fired boilers exhibited a range of 75% to 85% efficiency.…”

Section: Pellets From Forest Biomassmentioning

confidence: 99%

“…The emissions levels of CO and NOx resulting from the combustion of pellets were found to be highly satisfactory (Saravanan et al, 2023). The implementation of co-firing biomass pellets with coal, namely by burning wood pellets in lower-row burners, has the potential to mitigate CO emissions (Daba et al, 2023). Notwithstanding the encouraging outcomes, power plants that depend on woody biomass pellets encounter a range of challenges.…”

Section: Pellets From Forest Biomassmentioning

confidence: 99%

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A concise review of technologies for converting forest biomass to bioenergy

Raihan

2023

JTIE

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The use of biomass is vital in reducing the negative effects of rising fossil fuel consumption. Given its quantity and diversity, forest biomass has garnered a lot of interest among the many kinds of biomass. This study evaluates the various strategies for transforming woody waste into usable biofuels. Carbon dioxide emissions from traditional energy generation systems could be mitigated through the direct utilization of forest biomass. Low energy conversion rates, as well as soot emissions and residues, are some of the problems that come up when directly using forest biomass. The sustainability of direct energy generation from forest biomass is also seriously threatened by the lack of constant access to biomass. Co-combustion with coal and pelletizing biomass is two solutions proposed for this issue. Co-combustion of forest biomass with coal has the potential to lower the process's emissions of carbon monoxide, nitrogen oxides, and sulfides. This article reviews and discusses the biochemical and thermochemical mechanisms that can transform forest biomass into a variety of liquid and gaseous biofuels. Future research using cutting-edge sustainability assessment tools like life cycle assessment, exergy, etc. should investigate the sustainability of forest biomass conversion processes to bioenergy further.

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Section: Pellets From Forest Biomassmentioning

confidence: 99%

Section: Pellets From Forest Biomassmentioning

confidence: 99%

A concise review of technologies for converting forest biomass to bioenergy

Raihan

2023

JTIE

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“…(Cahyo, Alif, Aditya, et al, 2021;Cahyo et al, 2020a). Further studies have investigated cofiring capabilities of other biomass resources such as corn cobs (Daba & Hailegiorgis, 2023), rice husks (Prasara-A & Gheewala, 2017), solid recovered fuel (Tanbar et al, 2023), recovered derivative fuel (Soleh et al, 2019), waste wood (Putra et al, 2024), coconut shells , and oil palm empty fruit bunches. By the end of 2023, studies on new types of biomass as alternative co-firing fuel were conducted on a laboratory-scale.…”

Section: Introductionmentioning

confidence: 99%

A techno-economic and environmental analysis of co-firing implementation using coal and wood bark blend at circulating fluidized bed boiler

Cahyo,

Sulistyowati,

Rahmanta

et al. 2024

Int. J. Renew. Energy Dev.

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The study aimed to explore the effects of biomass co-firing of coal using acacia wood bark at circulating fluidized bed (CFB) boiler coal-fired power plant with 110 MWe capacity. The analysis focused on main equipment parameters, including the potential for slagging, fouling, corrosion, agglomeration, fuel cost, and specific environmental factors. Initially, coal and acacia wood bark fuel were blended at a 3% mass ratio, with calorific values of 8.59 MJ/kg and 16.59 MJ/kg, respectively. The corrosion due to chlorine and slagging potential when using wood bark was grouped into the minor and medium categories. The results showed that co-firing at approximately 3% mass ratio contributed to changes in the upper furnace temperature due to the variation in heating value, high total humidity, and a less homogeneous particle size distribution. Significant differences were also observed in the temperature of the lower furnace area, showing the presence of a foreign object covering the nozzle, which disturbed the ignition process. A comparison of the seal pot temperature showed imbalances as observed from the temperature indicators installed on both sides of boiler, with specific fuel consumption (SFC) increasing by approximately 0.17%. During the performance test, the price of acacia wood bark was 0.034 USD/kg, resulting in fuel cost of 0.023355 USD/kWh, adding 0.061 cent/kWh to coal firing cost. Despite co-firing, the byproducts of the combustion process, such as SO2 and NOx, still met environmental quality standards in accordance with government regulations. However, a comprehensive medium- and long-term impact evaluation study should be carried out to implement co-firing operations using acacia wood bark at coal-fired power plant. Based on the characteristics, such as low calorific value, with high ash, total moisture, and alkali, acacia wood bark showed an increased potential to cause slagging and fouling.

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