Environmental benefits of co-combustion of light fuel oil with waste glycerol

Bala-Litwiniak, Agnieszka; Radomiak, H.

doi:10.1080/15567036.2015.1091867

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…In addition to desired methyl esters, this reaction also provides a few other products, including crude glycerol and rapeseed cake or sunflower husk [ 28 , 29 ]. A couple of studies have demonstrated the possibility of combustion or co-combustion of crude glycerol [ 11 , 30 , 31 , 32 , 33 , 34 , 35 ]. Rapeseed cake and sunflower husk can be used as animal feed, but it often requires proper preparation of the raw material (purification and grinding), which generates additional costs.…”

Section: Introductionmentioning

confidence: 99%

Computational and Experimental Studies of Selected Types of Biomass Combustion in a Domestic Boiler

Bala-Litwiniak

Musiał

2022

Materials

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The paper analyzes the suitability of four types of biomass pellets as a fuel for heating purposes. Three types of waste biomass (sunflower husks, rapeseed cake, and corn straw) and one type of biomass grown for energy purposes (willow) were selected. After appropriate preparation, the selected starting materials were subjected to the pelletization process. Selected physical and chemical properties of the studied biomass pellets were determined. All four types of the analyzed pellets met the EN-ISO-17225-2:2014 standard in terms of bulk density, dimensions, as well as nitrogen and moisture content. The highest calorific value was pellets made of sunflower husk (17.27 MJ/m3) and willow (16.81 MJ/m3), while the calorific value of pellets made of corn straw and rapeseed cake did not exceed 16.5 MJ/m3 and did not meet the standard. In addition, the ash content for these two types of pellets was well above the standard. A 10 kW domestic biomass boiler was employed for burning the tested pellets. The consumption of analyzed fuels during boiler operation was determined. The concentration of CO, CO2, and NOx in exhaust gases was also examined. The obtained experimental results were compared with the numerical calculations with the use of ANSYS Chemkin-Pro using two mechanisms. The highest concentrations of CO2 and CO were observed during the combustion of sunflower and willow husk pellets, which probably resulted from the highest carbon content and, thus, the highest calorific value when compared to cake and straw pellets. For all analyzed pellets, the value of NO and NO2 concentration was similar and did not exceed 368 ppm and 18 ppm, respectively. The results closest to the experiment were obtained for calculations using the mechanism developed by Glarborg et al. The research carried out in the article shows that out of the four analyzed types of pellets, only sunflower and willow husk pellets can be burned in a domestic boiler adapted to burning wood pellets, which is a cheap alternative to wood pellets.

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Section: Introductionmentioning

confidence: 99%

Computational and Experimental Studies of Selected Types of Biomass Combustion in a Domestic Boiler

Bala-Litwiniak

Musiał

2022

Materials

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“…The co-combustion of crude glycerol with other renewable liquids is also a viable option since it does not contribute to CO 2 emissions or increase the concentration of harmful products (SO 2 , NO x , and CO) of combustion. 37,38 Szwaja et al 37 burned glycerol mixed with ethanol in a spark ignition reciprocating engine to analyze the toxic content, combustion thermodynamics, and engine performance in the exhaust gases emitted by combustion.…”

Section: Utilization Of Glycerolmentioning

confidence: 99%

Recovery and utilization of crude glycerol, a biodiesel byproduct

2022

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“…Biodiesel produced from rapeseed, called rapeseed methyl ester (RME), is produced in the transesterification process involving the methanolysis of rapeseed oil, which also produces waste glycerol [22][23][24]. The amounts of these undesirable wastes always exceed 10% of the weight of the obtained esters [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…The authors found that the addition of raw glycerin facilitates the binding of biomass particles during pellet production. Previous works have attempted to use waste glycerol as a binder during the production of wood pellets [26,42].…”

Section: Introductionmentioning

confidence: 99%

Computational and Experimental Studies on Combustion and Co-Combustion of Wood Pellets with Waste Glycerol

Bala-Litwiniak,

Musiał,

Nabiałczyk

2023

Materials

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The shortage of fossil fuels and their rising prices, as well as the global demand for renewable energy and the reduction in greenhouse gas (GHG) emissions, result in an increased interest in the production of alternative biofuels, such as biodiesel or biomass pellets. In this study, the possibility of utilizing waste glycerol, as an addition to pine pellets intended for heating purposes, has been investigated. The usefulness of pellets containing glycerol additions has been compared in terms of applicable quality standards for wood pellets. The highest values of moisture (4.58%), ash (0.5%) and bulk density (650 kg/m3) were observed for pellets without glycerin waste. The addition of waste glycerol slightly increases the calorific value of the pellet (17.94 MJ/kg for 7.5% additive). A 10-kW domestic biomass boiler has been employed to burn the tested pellets. The consumption of analyzed fuels during boiler operation was determined. The concentration of CO, CO2 and NOx in exhaust gases has also been examined. It was observed that the addition of 7.5% of waste glycerol contributes to the reduction in NOx concentrations by 30 ppm and CO2 by 0.15%. The obtained experimental results were compared with the numerical calculations made with the use of ANSYS Chemkin-Pro. The conducted research indicates the legitimacy of utilizing waste glycerol as an additive to wood pellets. In addition, this type of addition has a positive effect on, among others, the increase in calorific value, as well as lower emissions of combustion products such as NOx and CO2.

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Environmental benefits of co-combustion of light fuel oil with waste glycerol

Cited by 8 publications

References 21 publications

Computational and Experimental Studies of Selected Types of Biomass Combustion in a Domestic Boiler

Computational and Experimental Studies of Selected Types of Biomass Combustion in a Domestic Boiler

Recovery and utilization of crude glycerol, a biodiesel byproduct

Computational and Experimental Studies on Combustion and Co-Combustion of Wood Pellets with Waste Glycerol

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