Combustion characteristics and arsenic retention during co-combustion of agricultural biomass and bituminous coal

Zhou, Chuncai; Liu, Guijian; Wang, Xiaojia; Qi, Cuicui; Hu, Yunhu

doi:10.1016/j.biortech.2016.04.104

Cited by 59 publications

(28 citation statements)

References 36 publications

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“…The results are in line with moisture content of the coal as reported in Table 1. In the temperature range of 150-250°C, weight gain of approximately 2%-3% are observed for all the samples due to adsorption of oxygen gas (O 2 ) in porous structure of the coal, generated due to moisture removal during the temperature range of below 150°C (Zhou et al 2016;Behera et al 2018Behera et al , 2020. After 300°C, rapid weight loss is observed indicating the initiation of combustion process.…”

Section: Combustion Studies By Tga-dtgmentioning

confidence: 95%

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Aich

Nandi

Bhattacharya

2020

Int J Coal Sci Technol

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This work presents the analysis of combustion characteristics of high ash Indian coal (28%-40%) collected from different mines of Singaurali coalfield, India. All the coal samples were characterized by proximate and gross calorific value analysis. Combustion performance of the coals were characterised using thermo-gravimetric analysis to identify the burning profile of individual coals. Various combustion kinetic parameters such as ignition temperature, peak temperature and burnout temperature, ignition index and burnout index, combustion performance index plus rate and intensity index of combustion process, activation energy were determined to analyse the combustion behaviour of coal. Further all these combustion properties were compared with the volatile matter, ash, fixed carbon and fuel ratio of each coal. Theoretical analysis shows that with increase in ash content, combustion performance initially increases and later descends. Further, coal with (25 ± 1.75)% volatile matter, 20%-35% ash and fuel ratio 1.4-1.5 were found to be optimum for coal combustion.

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Section: Combustion Studies By Tga-dtgmentioning

confidence: 95%

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Aich

Nandi

Bhattacharya

2020

Int J Coal Sci Technol

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“…More researches about biomass were conducted by thermogravimetry tests to study the combustion characteristics, pollutant emissions, kinetics, and co‐firing characteristics with other substances (coal or sewage sludge) in different atmospheres (O 2 /CO 2 or O 2 /N 2 ) . Some studies are about the burning of micron‐sized biomass particles.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of single unconventional biomass pellets: Ignition characteristics, combustion processes, and artificial neural network modeling

Lin

Wang

et al. 2020

Int J Energy Res

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Summary This study applied the artificial neural networks (ANNs) model to the thermal data obtained by suspension ignition and combustion experiment of single peanut shells (PS, millimeter scale) pellet under O2/CO2 atmosphere. ANN11 was the best ANN model for predicting the relevant parameters of PS combustion. The coincidence between ANN prediction data and experimental data was over 99%. Two modes of biomass pellet ignition were observed: homogeneous ignition of volatiles and hetero‐homogeneous ignition of volatiles and char simultaneously. The ignition mode was transformed from homogeneous ignition to hetero‐homogeneous ignition when oxygen concentration was 50%. In addition, it was observed that ignition at the bottom emerged first, and then the upper end was ignited, finally generating an envelope flame. This phenomenon occurred when gas flow temperature exceeded 873 K or the oxygen concentration was greater than 50%. The reduction of ignition delay time and internal ignition temperature from 21% to 50% oxygen concentration was more intense than that of 50% to 100% oxygen concentration. Increasing oxygen concentration or temperature resulted in a shorter, brighter, and more stable volatile flame of biomass pellets, which reduced volatile burnout time. Nevertheless, the impact of gas flow rate on biomass combustion was intricate and irregular.

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“…The changing trends of weight loss and weight loss rate along with temperature were consistent between the two types of pellets (Figure 1, 2). The whole combustion process can be divided into four stages: drying stage, volatile separation & combustion stage [18], fixed carbon combustion stage, and ash formation stage [19].…”

Section: Thermogravimetric (Tg) Analysis Of Combustionmentioning

confidence: 99%

Numerical Simulation of Biomass Pellet Combustion Process

Chen¹,

Ai²,

Tian-shun³

et al. 2019

IJHT

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According to computational fluid dynamics, heat transfer theory, and chemical reaction kinetics theory, the models of single-pellet biomass combustion were established, flow, heat transfer and mass transfer of single-particle biomass fuel during combustion were analog calculated, and they showed about 2 min, a 2 cm biomass pellet fuel completely burnt out , the highest temperature is 1280 k, the release of gases such as H2O, CO2 and CO. The bed combustion model of biomass chain furnace was built based on the single particle fuel combustion model means the bed combustion process of biomass particles is in good agreement with the actual combustion process. This study provides a theoretical basis for the whole biomass briquette boiler system design and performance optimization and improvement.

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Combustion characteristics and arsenic retention during co-combustion of agricultural biomass and bituminous coal

Cited by 59 publications

References 36 publications

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

Relationship between proximate analysis parameters and combustion behaviour of high ash Indian coal

An experimental study of single unconventional biomass pellets: Ignition characteristics, combustion processes, and artificial neural network modeling

Numerical Simulation of Biomass Pellet Combustion Process

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