Cofiring low-rank coal and biomass in a bubbling fluidized bed with varying excess air ratio and fluidization velocity

Wander, Paulo Roberto; Bianchi, Flávio M.; Caetano, Nattan Roberto; Klunk, Marcos Antônio; Indrusiak, Maria Luiza Sperb

doi:10.1016/j.energy.2020.117882

Cited by 31 publications

(10 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is mainly because, under this excess air coe cient, the sawdust fuel with a better ow pattern is su ciently combusted. Wander et al (Wander et al, 2020) also observed the more excessive gas, the higher the uidization rate, and the reduced amount of generated CO. Caposciutti and Antonelli (Caposciutti and Antonelli, 2018) investigated biomass combustion and found that excessive gas is the main parameter that affects the emission of major gaseous pollutants. However, different biomass raw materials may have different conclusions.…”

Section: Introductionmentioning

confidence: 91%

“…The combustion operation of uidized bed is closely related to the degree of uidization, and the ow pattern is in uenced not only by particle size, but also by excess air (Wander et al, 2020). Permchart and Kouprianov (2004) veri ed that CO and C x H y emissions reduced with increasing excess air and 50 ~ 60% excess air was observed to be able to minimize pollutant emission.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

Guo¹

2023

Preprint

View full text Add to dashboard Cite

Thermal weight tests and fluidized-bed experiments were performed to analyze the joint effect of biomass size and level of excessive gas during combustion. Results showed that both particle size and excessive gas have great impact on biomass combustion. Small-size biomass presents the highest volatilization and burning rate, and can be easily fluidized than that of larger-size. Particle size and excess air jointly determine the fluidization pattern and temperature profile, thereby affecting the distribution of unburned carbon and gaseous pollutants. For different biomass particle, the minimum unburned carbon concentration is obtained at an excess air of 25%, 50% and 75%, respectively. Increasing particle size or decreasing excess air leads to reduced emission of NO but increased emissions of CO and CxHy. The increasing excessive gas reduces the heat loss of medium and large particles, and greatly promote their combustion .

show abstract

Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 96%

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

Guo¹

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…There has been a significant increase in power generation from coal in the fluidized bed, although only 2% of installed capacity applies to this technology in the world [42]. Another advantage is the reduction of sulfur without loss of thermal efficiency, in addition to the possibility of the technology being implemented in existing thermoelectric plants.…”

Section: Supercritical and Ultra-supercritical Plantsmentioning

confidence: 99%

Hierarchical Criticality Analysis of Clean Technologies Applied to a Coal-Fired Power Plant

Oliveira¹,

Lorenzini²,

Shah³

et al. 2020

IJDNE

View full text Add to dashboard Cite

Mineral coal is the main source of energy generation in the world. In Brazil, this energy source has a smaller share in the internal energy supply, 5.5% of the total. Despite this, issues of energy security, stable and low prices make coal a strategic source. Due to this source's importance, this work aims to evaluate the clean technologies used to mitigate the emission resulting from the combustion of coal from a thermoelectric plant that applies low quality coal in Brazil using an analytical hierarchy process to classify the viable technological alternatives for the production process. The articulation of the environmental management system was adequate to meet the environmental demands and the energy efficiency of the thermoelectric plant. However, the results suggest that the investment in a coal processing plant would increase the fuel quality, a critical factor in the reduction of operating milling costs, in the ash circuit, and the treatment of gaseous emissions.

show abstract

“…The use of biochar is not only for domestic energy use in the community but also as a fuel that can be substituted into coal for combustion in power plant boilers. (Pap et al, 2022;Wander et al, 2020). The process of coagulating biomass usually requires the right technique and treatment in order to produce good quality.…”

Section: Introductionmentioning

confidence: 99%

Socialization and training on production of bio-charcoal made from biomass waste using a double-tube reactor

Mangalla

Sisworo²,

Sudia³

et al. 2023

ABDIMAS J. Pengabdi. Masy. Univ. Merdeka Malang

View full text Add to dashboard Cite

Proper handling of biomass waste can turn waste into something beneficial for society. One way that can be done is to convert biomass waste into quality biochar for energy needs and agriculture as a planting medium. This partnership program is intended to provide education and practical knowledge to the community regarding utilizing biomass waste for biochar production using a double tube reactor. The activities consisted of socialization of the impact of the abandonment of biomass and the benefits of biomass for household energy needs, as well as practical experience of carbonizing biomass by directly involving partner communities. This activity was carried out at Pambulaan Jaya Village Hall attended by 32 community partners and 9 teams from Halu Oleo University. This partnership activity is very relevant for people in the village where most of the population lives as rice and field farmers. The practical knowledge on carbonizing biomass waste was conducted in two days for the two types of biomasses, namely wood chips and coconut shells. The community was very enthusiastic about continuing the carbonization process after they learned about the great benefits of this biochar product for household energy needs, growing media for plantations, and increasing their income.

show abstract

Cofiring low-rank coal and biomass in a bubbling fluidized bed with varying excess air ratio and fluidization velocity

Cited by 31 publications

References 33 publications

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

Comparative study on particle size and excess air during biomass combustion: temperature profile, unburned carbon, gaseous emissions and combustion efficiency

Hierarchical Criticality Analysis of Clean Technologies Applied to a Coal-Fired Power Plant

Socialization and training on production of bio-charcoal made from biomass waste using a double-tube reactor

Contact Info

Product

Resources

About