Influence of additive on ash and combustion characteristics during biomass combustion under O2/CO2 atmosphere

Wang, Qian; Han, Kuihua; Wang, Peifu; Li, Shijie; Zhang, Mingyang

doi:10.1016/j.energy.2020.116987

Cited by 33 publications

(17 citation statements)

References 42 publications

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“…Typically, ash content contains calcium, potassium, magnesium, and phosphorus. One problem that hinders the thermal process of biomass is the deposition and agglomeration caused by minerals in ash melts [40]. Therefore, a higher fixed carbon content promotes higher calorific energy in the charcoal produced.…”

Section: Proximate and Ultimate Analysismentioning

confidence: 99%

Moisture Content Impact on Properties of Briquette Produced from Rice Husk Waste

Saeed

Harun

Bilad³

et al. 2021

Sustainability

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An agricultural waste-based source of energy in the form of briquettes from rice husk has emerged as an alternative energy source. However, rice husk-based briquette has a low bulk density and moisture content, resulting in low durability. This study investigated the effect of initial moisture contents of 12%, 14%, and 16% of rice husk-based briquettes blended with 10 wt% of kraft lignin on their chemical and physical characteristics. The briquetting was done using a hand push manual die compressor. The briquette properties were evaluated by performing chemical (ultimate and proximate analysis, thermogravimetric analysis), physical (density, durability, compressive strength, and surface morphology) analyses. The durability values of all briquette samples were above 95%, meeting the standard with good compressive strength, surface morphology, and acceptable density range. The briquette made from the blend with 14% moisture content showed the highest calorific value of 17.688 MJ kg−1, thanks to its desirable morphology and good porosity range, which facilitates the transport of air for combustion. Overall, this study proved the approach of enhancing the quality of briquettes from rice husk by controlling the moisture content.

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Section: Proximate and Ultimate Analysismentioning

confidence: 99%

Moisture Content Impact on Properties of Briquette Produced from Rice Husk Waste

Saeed

Harun

Bilad³

et al. 2021

Sustainability

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“…This was the similar case with dolomite additives [17]. Phosphorous based additives, such as NH4H2PO4 in the work of Wang et al [18], successfully decreased slag formation, but at the same decreased the integrated combustion characteristic index and their efficiency depended on the inorganic composition of the fuel that they were added to. On the other hand, biomass mixing proved to be a more suitable solution than additives to fight slagging and agglomeration in terms of cost and effectiveness [19] and triggered the interest of many researchers during the last thirty years [6,[20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 61%

Will mixing rule or chemical reactions dominate the ash behavior of biomass mixtures in combustion processes on laboratory and pilot scales?

Atallah

Defoort²,

Campargue³

et al. 2022

Fuel

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“…RS-rice straw 1. Present study,2 Jenkins et al[55],3 Pandey and Kumar[59],4 Wang et al[54],5 Salour et al[34],6 Wang et al[60],…”

mentioning

confidence: 72%

Ash Melting Behavior of Rice Straw and Calcium Additives

et al. 2021

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Rice straw is potentially an appropriate feedstock material for biofuel production, since a huge amount of this postharvest residue is generated every year. The transformation of such agricultural biomass into densified products with a higher energy value and their subsequent combustion is associated with several questions. One of them is that rice straw exhibits a large formation of ash during combustion; thus, it is essential to know the nature of its ash melting behavior. Generally, during the combustion of straw biomass, ash sintering occurs in relatively low temperatures, resulting in the damaging of heating equipment. This negative aspect can be overcome by the addition of calcium-based additives. This paper aimed to study the ash melting behavior at a laboratory scale and to determine the ash melting points of rice straw mixed with calcium carbonate (CaCO3) and calcium hydroxide (Ca(OH)2) in different proportional ratios. The standardly produced ash samples from the rice straw obtained from Cambodia were constantly heated up in a muffle furnace, and characteristic temperatures of ash melting, i.e., shrinkage, deformation, hemisphere, and flow temperature, were recorded. The results showed that increasing the additive ratio did not bring linear growth of the melting temperatures. The addition of 1% CaCO3 showed an optimal positive impact of higher ash melting temperatures, and thus a better ability to abate the sintering of the rice straw ash.

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Influence of additive on ash and combustion characteristics during biomass combustion under O2/CO2 atmosphere

Cited by 33 publications

References 42 publications

Moisture Content Impact on Properties of Briquette Produced from Rice Husk Waste

Moisture Content Impact on Properties of Briquette Produced from Rice Husk Waste

Will mixing rule or chemical reactions dominate the ash behavior of biomass mixtures in combustion processes on laboratory and pilot scales?

Ash Melting Behavior of Rice Straw and Calcium Additives

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