摘要
在固定床上开展谷壳热解和水蒸气气化实验,通过使用冷捕集法收集实验过程中形成的焦油,并对其进行GC/MS成分和重量分析,从而研究热解和水蒸气气化过程中焦油析出的不同特性并考察温度、水蒸气和催化剂等因素对水蒸气气化焦油析出的影响。研究表明:在实验工况下,焦油组分主要为芳香族化合物和含氧化合物;升高温度、加入水蒸气或催化剂均能降低焦油产量,使焦油芳香性增大;加入水蒸气更有利于焦油重整;催化剂可使焦油组分趋于单一化,3种催化剂的焦油裂解性能依次为Fe2O3>CaO>MgO。
Rice husk, typical Chinese agricultural residue, was selected to pyrolyze and gasify in a quartz fixed-bed reactor to investigate the effect of temperature and catalysts on yield and property of bio-oil/tars. The results show that the main components of bio-oil/tars are aromatic compounds and oxygenated hydrocarbons. The elevation of temperature, as well as addition of steam and catalysts can decrease the bio-oil/tars yield, yet enhance the formation of aromatic hydrocarbons. The adding steam favors the bio-oil/tars＇ reforming with presence of the catalyst. In addition, the presence of catalyst can reduce the species number of bio-oil/tars components, and cracking performance of the bio-oil/tars for the three catalysts was Fe2O3 〉 CaO 〉 MgO in turn.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第12期2553-2558,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51176062
21176098)
国家高技术研究(863)发展计划(2012AA063504)
