Pretreatment of biomass by torrefaction and carbonization for coal blend used in pulverized coal injection

Shan Wen Du, Wei Hsin Chen, John A. Lucas

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

To evaluate the utility potential of pretreated biomass in blast furnaces, the fuel properties, including fuel ratio, ignition temperature, and burnout, of bamboo, oil palm, rice husk, sugarcane bagasse, and Madagascar almond undergoing torrefaction and carbonization in a rotary furnace are analyzed and compared to those of a high-volatile coal and a low-volatile one used in pulverized coal injection (PCI). The energy densities of bamboo and Madagascar almond are improved drastically from carbonization, whereas the increase in the calorific value of rice husk from the pretreatment is not obvious. Intensifying pretreatment extent significantly increases the fuel ratio and ignition temperature of biomass, but decreases burnout. The fuel properties of pretreated biomass materials are superior to those of the low-volatile coal. For biomass torrefied at 300. °C or carbonized at temperatures below 500. °C, the pretreated biomass can be blended with coals for PCI.

Original languageEnglish
Pages (from-to)333-339
Number of pages7
JournalBioresource technology
Volume161
DOIs
Publication statusPublished - 2014 Jun

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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