Study on co-pyrolysis characteristics of rice straw and Shenfu bituminous coal blends in a fixed bed reactor.
Study on co-pyrolysis characteristics of rice straw and Shenfu bituminous coal blends in a fixed bed reactor.
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DOI：
10.1016/j.biortech.2013.12.119
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发表时间：
2014-03
影响因子：
11.4
通讯作者：
Shuaidan Li;Xueli Chen;Aibin Liu;Li Wang;G. Yu
中科院分区：
文献类型：
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作者：
Shuaidan Li;Xueli Chen;Aibin Liu;Li Wang;G. Yu
在固定床反应器中研究了稻草与神府烟煤在氮气气氛下的共热解行为。热解温度分别为700 °C、800 °C和900 °C。使用六种不同的生物质比率。采用气相色谱仪和气相色谱-质谱联用仪分别对烟气、焦油组分进行了分析。在共热解条件下，气体体积产率高于计算值。共热解焦油中酚类化合物含量比计算值高，芳烃化合物含量比计算值低。生物质的加入改变了热解过程中的气氛，促进了焦油的分解。扫描电镜结果表明，混合半焦与其亲本半焦之间的差异不显著。焦炭产率和元素分析结果也表明，两种颗粒之间不存在明显的相互作用。二次反应和焦油的分解是造成气体产率和组分变化的主要原因。
Co-pyrolysis behaviors of rice straw and Shenfu bituminous coal were studied in a fixed bed reactor under nitrogen atmosphere. The pyrolysis temperatures were 700 °C, 800 °C and 900 °C, respectively. Six different biomass ratios were used. Gas, tar components were analyzed by a gas chromatograph and a gas chromatography–mass spectrometry respectively. Under co-pyrolysis conditions, the gas volume yields are higher than the calculated values. Co-pyrolysis tar contains more phenolics, less oxygenate compounds than calculated values. The addition of biomass changes the atmosphere during the pyrolysis process and promotes tar decomposition. The SEM results show that the differences between the blended char and their parents char are not significant. The results of char yields and ultimate analysis also show that no significant interactions exist between the two kinds of particles. The changes of gas yield and components are caused by the secondary reactions and tar decomposition.