ENERGY BALANCE AND EFFICIENCY IN WOOD SAWDUST BRIQUETTES PRODUCTION

Authors

  • Ailton Teixeira Vale Universidade de Brasília
  • Luiz Vicente Gentil Universidade de Brasília

DOI:

https://doi.org/10.5380/rf.v45i2.36954

Keywords:

ood densification, industry of briquette, energy.

Abstract

The industrial wood briquette making process is an alternative to add value to forestry waste and involves the compaction of sawdust at high pressure and temperature. The present study was performed in an industry in the state of Goiás, Brazil. All kinds of energy involved in the wood briquette manufacturing process were qualified and quantified, in all stages of the process. The methodology used was based on Cotrim (1992), Silva (2001), (BEN, 2007), Inconprera (2008) and NBR 8633. The total energy demand to produce one ton of Pinus wood briquettes using sawdust at 43.8% moisture was 435 kWh. When producing the same amount of briquettes at 11% humidity, this value fell to 101.66 kWh per ton. Thus, drying process of sawdust consumes 76.63% of all the energy used for manufacturing. The amount of energy required for the production of 1 ton of briquettes corresponds to 10.8% (wet sawdust) and 4.37% (dry sawdust) of the energy contained in this one ton of briquettes.

Keywords: Wood densification; industry of briquette; energy.

Author Biographies

Ailton Teixeira Vale, Universidade de Brasília

Engenheiro floretal, com doutorado em energia de biomassa, professor da área de tecnologia da madeira do departamento de engenharia florestal da Universidade de Brasília

Luiz Vicente Gentil, Universidade de Brasília

Engenheiro agrônomo e metre pela Universidade de São Paulo e doutor em Ciência Florestal pela Universidade de Brasília; professor da Faculdade de Agronomia e Veterinária da Universidade de Brasília

Published

2014-11-14

How to Cite

Vale, A. T., & Gentil, L. V. (2014). ENERGY BALANCE AND EFFICIENCY IN WOOD SAWDUST BRIQUETTES PRODUCTION. Floresta, 45(2), 281–288. https://doi.org/10.5380/rf.v45i2.36954

Issue

Section

Artigos