Caracterização Física E Química Da Biomassa Usada Como Combustível Sólido Em Uma Caldeira

Abstract

PHYSICAL AND CHEMICAL CHARACTERIZATION OF BIOMASS USED AS SOLID FUEL IN A BOILER. Biomass is a renewable energy source most used in the world, however, depending on the chemical properties and origin of the material used as biofuel, the amount of ash generated during combustion can be high, harming the energetic harnessing. The objective of this study was to characterize chemically and physically biomass: bark, sawdust, and urban pruning; used for energy generation. Also, part of the study was the physical characterization of briquettes produced from these materials. The analyzes performed to characterize the biomass were: moisture determination, higher heating value, proximate analysis and chemical composition - extractives, lignin and holocellulose contents. Subsequently, the biomass was briquetted and the mechanical properties of the briquettes were tested. The results showed that all biomass (bark, sawdust, and urban pruning) has the energy potential to be used in the industry. T1 briquettes (100% bark) showed the highest mechanical resistance. However, the formation of blends should be sought to minimize the ash content in the boiler. Thus, blends T2 and T3 can be considered as the best alternatives for the company.

Caracterização física, química e energética de biomassas florestais e residuais para caldeiras

“…O teor de materiais voláteis influenciará na capacidade de combustão do material, sendo comum as biomassas apresentarem níveis de 70-85% (Carvalho et al, 2020). Nota-se que os três materiais obtiveram resultados dentro deste parâmetro, sendo que a cavaco de eucalipto apresentou maiores quantidades (84,5%), seguido de cascas de eucalipto (82,7%) e reciclados (80,4%).…”

“…Da mesma forma que materiais voláteis, os níveis de carbono fixo influenciarão na capacidade de combustão, variando de 15-20% (Carvalho et al, 2020). A porcentagem de carbono fixo foi semelhante para os três tipos de biomassa, sendo que o menor nível (14,9%) foi apresentado pelo cavaco de eucalipto e, o maior, pelo material reciclado (16,8%).…”

Biochar produced from poultry litter waste

“…The ash content also behaved as expected with the residence time; the degradation of the material resulted in a high ash content (33.66 to 53.79%). In general, the ash content of the wood is <1% (de Carvalho et al, 2020;da Silva et al, 2018). The high values of the ash content are related to the impurities in the material (Padilla et al, 2019).…”

Qualification of welded joints used in the sugar and alcohol sector of ASTM A335 P22 steel pipes welded by GTAW and SMAW processes

“…Brazilian Journal of Development, Curitiba, v.10, n.1, p. 1800Curitiba, v.10, n.1, p. -1814Curitiba, v.10, n.1, p. , jan., 2024 Sugarcane bagasse has become a source of raw material for the generation of electricity through burning in boilers. One of the major drawbacks in the use of this type of raw material is the generation of ashes that cause wear and tear on components and lead to increased maintenance costs (CARVALHO et al, 2021). Therefore, the lower the number of maintenance stops for water tube boilers, the greater their availability and consequently the greater the generation of electricity.…”