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以海洋生物质浒苔为研究对象,并以玉米秸秆(草类生物质)和锯末(木质类生物质)为对照,采用热重分析方法研究了3种生物质的热解特性,并比较了3种生物质之间的热解差异。结果表明,与玉米秸秆和锯末等典型陆生生物质相比,浒苔的热稳定性最低。此外,以不同浓度氧化铝作为催化剂,用热重分析法对其热解过程进行了研究,利用TG-DTG曲线分析了不同催化剂在不同浓度下对其基本热解特性的影响。结果表明,Al2O3对于3种生物质转化率和最大失重速率有显著的影响,其中Al2O3对锯末和浒苔的转化率降低程度比玉米秸秆较明显。考虑到Al2O3具有可调变的表面酸碱性以及多种不同的晶相结构等优点,Al2O3具有较大的的应用价值。
Taking the marine biomass Enteromorpha as the research object, the thermogravimetric analysis was used to study the pyrolysis characteristics of three kinds of biomass with corn straw (grass biomass) and sawdust (woody biomass) Differences in pyrolysis between the three biomass types. The results showed that compared with typical terrestrial biomass such as corn stalks and sawdust, Enteromorpha had the lowest thermal stability. In addition, different concentrations of alumina were used as catalysts. The pyrolysis process was studied by TG method. The effects of different catalysts on the pyrolysis performance were analyzed by TG-DTG curves. The results showed that Al2O3 had a significant effect on the conversion rate and maximum weight loss rate of the three biomass. The conversion rate of Al2O3 to sawdust and Enteromorpha was less obvious than corn stalk. Taking into account the Al2O3 has a variable surface acid-base and a variety of different crystalline phase structure, etc., Al2O3 has a greater value.