Combustion of Pitcoal-Wood Biomass Brichettes in a Boiler Test Facility

Lăzăroiu, Gheorghe; Mihăescu, Lucian; Prisecaru, Tudor; Oprea, Ion; Pîșă, Ionel; Negreanu, Gabriel; Indrieş, R.; Popa, V. I.

doi:10.30638/eemj.2008.083

Cited by 16 publications

(5 citation statements)

References 5 publications

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“…On the other hand, it seems promising that exploring the left-over microalgae waste could be used as a binder in the same way combined with economic cost factors. At present, to efficiently extract energy from pellets, the research regarding vegetal biomass has focused on high-efficiency combustion technology [72][73][74]. For example, Lazaroiu et al [72,73] have shown that pitcoal-wood biomass briquettes can be stably burned in a modified 55 KW boiler.…”

Section: Energy Efficiency Perspective Of the Pelletmentioning

confidence: 99%

“…At present, to efficiently extract energy from pellets, the research regarding vegetal biomass has focused on high-efficiency combustion technology [72][73][74]. For example, Lazaroiu et al [72,73] have shown that pitcoal-wood biomass briquettes can be stably burned in a modified 55 KW boiler. Besides, Lazaroiu et al [74] achieved solid biomass hydrogenation combustion, which injecting hydrogen-rich gas (HRG) into the air is beneficial to the stability of the flame.…”

Section: Energy Efficiency Perspective Of the Pelletmentioning

confidence: 99%

“…In the lab, this work demonstrates that the novel pellet is a very promising fuel. In the future, considering the work of Lazaroiu et al [70,72,74], further improvements in the manufacture and combustion of the novel pellets on an industrial scale should be a very promising task.…”

Section: Energy Efficiency Perspective Of the Pelletmentioning

confidence: 99%

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Experimental Investigation on the Energy Consumption, Physical, and Thermal Properties of a Novel Pellet Fuel Made from Wood Residues with Microalgae as a Binder

et al. 2019

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Co-pelletization of waste biomass and microalgae is an attractive option for using bioenergy efficiently. This work investigates the potential of microalgae as a binder to improve the energy consumption and physical and thermal properties of a novel pellet. Wood waste biomass was blended with microalgae in proportions of 15%, 30%, and 50% to investigate its properties using a single pelleting device and thermodynamic analysis. The results showed that, under the conditions of temperature (80–160 °C), pressure (120–200 MPa), and moisture content (6%–14%), blending microalgae can effectively increase the bulk density and mechanical durability of the pellets by 9%–36% and 0.7%–1.6%, respectively, and can significantly reduce the energy consumption of pelleting by 23.5%–40.4%. Blending microalgae can significantly reduce the energy consumption of pelleting by 23.5%–40.4%. Moreover, when the amount of Chlorella vulgaris powder (CVP) is 50%, a maximum bulk density (BD) of 1580.2 kg/m3, a durability (DU) of 98%, and a minimum energy consumption of 25.2 kJ/kg were obtained under the optimum conditions of temperature (120 °C), pressure (120 MPa), and moisture content (10%), respectively. Besides, the interaction between the microalgae and sawdust does exist, and their effect on the co-combustion process is inhibitive (0–300 °C) and accelerative (300–780 °C). When the amount of microalgae was 15%, the average activation energy of the pellet was a minimum value, which was 133.21 kJ/mol and 134.60 kJ/mol calculated by the Kissinger–Akahira–Sunose method and Ozawa–Flynn–Wall method, respectively. Therefore, the energy consumption, physical, and thermal properties of the novel pellet could be improved and meet the ISO standard (International Organization for Standardization of 17225, Geneva, Switzerland, 2016) by blending 15% of microalgae. Overall, the use of microalgae as a binder can indeed improve pellet quality, and it can be considered a significant way to utilize microalgae in the future.

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Section: Energy Efficiency Perspective Of the Pelletmentioning

confidence: 99%

Section: Energy Efficiency Perspective Of the Pelletmentioning

confidence: 99%

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Experimental Investigation on the Energy Consumption, Physical, and Thermal Properties of a Novel Pellet Fuel Made from Wood Residues with Microalgae as a Binder

et al. 2019

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“…Usually, the briquettes are delivered foil-packaged (so that they do not absorb moisture), in packs of no more than 10-15 kg, so that they can be easily handled. Beside the classic combustion into the heating units of individual households, briquettes and pellets may also be used to replace lignite and inferior coal in industry (Lăzăroiu et al 2009). Briquettes are strong, dense, uniform structure products, superior to raw firewood.…”

Section: Introductionmentioning

confidence: 99%

Particularities of hollow-core briquettes obtained out of spruce and oak wooden waste

Spirchez

Lunguleasa

Matei

2018

Maderas, Cienc. tecnol.

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“…The density of the briquettes differs depending on the type and power of the production machine, with values of about 800 kg/m 3 for hydraulic installations and 1100 kg/m 3 for presses with helical screws or connecting rod-crank mechanisms [12]. The briquettes can be obtained separately from straw or mixed with wood or inferior coal [13][14][15][16], with the lignocellulosic particles being native or torrefied [17][18][19]. Regarding the properties of briquettes, such as any lignocellulosic material, briquettes have physical, mechanical, chemical, and calorific properties.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Physical, Mechanical, and Calorific Properties of Briquettes with or without a Hollow Made of Wheat (Triticum aestivum L.) Straw Waste

2022

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Large amounts lignocellulosic biomass in the form of straw is leftover after wheat harvesting that could be utilized for beneficial purposes. The latter has led to the emergence of new technologies to make use of this resource. One such technology currently in use turns wheat straw into briquettes. In the present study, we have prepared and evaluated the physical, mechanical and calorific properties of two types of briquettes made of wheat straw. The two types of briquettes prepared were (i) hollow briquettes and (ii) solid briquettes. The densities of these briquettes obtained on a mechanical device with a crank mechanism were 1.169 kg/m3, irrespective of whether the briquettes were hollow or solid. The briquette densities are consistent with European standards. The calorific value of wheat straw was 17.69 MJ/kg. Although the calorific value was somewhat lower than the beech wood briquettes (18.38 MJ/kg), it is adequate for their combustion in both stoves and thermal power plants. The ash content of wheat straw was 9.1% (~10-fold higher than that of beech wood). The briquettes showed a compressive mechanical strength of 1.15–2.17 N/mm2 and splitting mechanical strength of 0.17–0.39 N/mm2 suggesting that the straw briquettes were well compacted and can be stable during transport and/or other manipulations. In conclusion, wheat straw briquettes have similar physical, mechanical and calorific properties to those prepared from beech wood biomass and are a viable solution to replace beech wood briquettes with similar efficiency.

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Combustion of Pitcoal-Wood Biomass Brichettes in a Boiler Test Facility

Cited by 16 publications

References 5 publications

Experimental Investigation on the Energy Consumption, Physical, and Thermal Properties of a Novel Pellet Fuel Made from Wood Residues with Microalgae as a Binder

Experimental Investigation on the Energy Consumption, Physical, and Thermal Properties of a Novel Pellet Fuel Made from Wood Residues with Microalgae as a Binder

Particularities of hollow-core briquettes obtained out of spruce and oak wooden waste

Evaluation of the Physical, Mechanical, and Calorific Properties of Briquettes with or without a Hollow Made of Wheat (Triticum aestivum L.) Straw Waste

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