The Use of Plant Biomass Pellets for Energy Production by Combustion in Dedicated Furnaces

Andrzej Greinert, Maria Mrówczyńska, Radosław Grech and Wojciech Szefner
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Andrzej Greinert: Department of Geoengineering and Reclamation, Institute of Environmental Engineering, University of Zielona Góra, 65-516 Zielona Góra, Poland
Maria Mrówczyńska: Department of Construction Technology, Geotechnics and Geodesy, Institute of Civil Engineering, University of Zielona Gora, 65-516 Zielona Góra, Poland
Radosław Grech: Centre of Renewable Energy Ltd. Co., University of Zielona Góra, 51A Armii Krajowej St., 66-100 Sulechów, Poland
Wojciech Szefner: Lubuski Centre for Innovation and Agricultural Implementation Ltd. Co., University of Zielona Góra, Kalsk 122, 66-100 Sulechów, Poland

Energies, 2020, vol. 13, issue 2, 1-17

Abstract: Biomass combustion is technologically difficult. It is also problematic because of the necessity to manage the ash that is generated in the process. The combustion of biomass pellets is optimum when their moisture is 6–8%. The calorific value of pellets made from straw and willow wood (4:1) was 17.3–20.1 MJ?kg −1 . There were serious problems with burning this material caused by the accumulation and melting of bottom ash on the grate, which damaged the furnace. These problems with optimizing the biomass combustion process resulted in increased CO emissions into the atmosphere. It was shown that pelletization could also be used to consolidate the ash generated during the combustion process, which would eliminate secondary dust during transport to the utilization site. For this purpose, it was suggested to add binding substances such as bentonite and bran. The analysis showed that an optimum material for pelletization should contain, on average, 880 g of ash, 120 g of bentonite, 108 g of bran, and 130 g of water.

Keywords: energy from biomass; pellets; ash from biomass combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (13)

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