Conversion of recycled sawdust into high HHV and low NOx emission bio-char pellets using lignin and calcium hydroxide blended binders
作者： Lingjun Kong , ShuangHong Tian , Zhaohui Li , Rongshu Luo , Dingsheng Chen
DOI: 10.1016/J.RENENE.2013.06.004
关键词:
摘要: Abstract Spruce wood sawdust (S), as biomass waste, could be utilized a renewable fuel, but it suffers from its bulky, low energy density, high volatiles content and NOx emission. This study investigated the possibility of conversion S into bio-char pellets (SC-Ps) CO2-neutral bio-fuel. Sawdust derived (SC) was produced through pyrolysis, subsequently compressed SC-Ps bonded by lignin (L) hardened Ca(OH)2, NaOH, CaCl2, CaO. The combustion characteristics SC, physical properties including abrasive resistances (ARs), impact resistance index (IRI) compress strengthens (CS) were evaluated. Results showed that heat value (HHV) SC increased 95% emission decreased due to release N-containing volatiles. Among these hardeners, addition 5% Ca(OH)2–10% L reduced disruptive force created uptake moisture played an effect hydration on hardening bonds. In addition, catalysis hydroxide promoted polymer chain growing three-dimensional cross-linking strengthened Thus, mechanical strengths Ca(OH)2/L sufficient for directly transportation being charged blast furnace.
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