Investigation of the relevance between biomass pyrolysis polygeneration and washing pretreatment under different severities: Water, dilute acid solution and aqueous phase bio-oil
Investigation of the relevance between biomass pyrolysis polygeneration and washing pretreatment under different severities: Water, dilute acid solution and aqueous phase bio-oil
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不同程度水、稀酸溶液和水相生物油下生物质热解多联产与洗涤预处理之间的相关性研究
DOI：
10.1016/j.biortech.2019.01.048
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发表时间：
2019-04-01
影响因子：
11.4
通讯作者：
Ma, Huanhuan
中科院分区：
文献类型：
--
作者：
Cen, Kehui;Zhang, Jie;Ma, Huanhuan
采用水、稀盐酸溶液（HCl溶液，pH = 2.9）和水相生物油（APBO，pH = 2.9）三种不同的溶液对稻草进行洗涤预处理。在固定床反应器中在550 ° C下热解原始样品和预处理样品。结果表明，在三种预处理中，APBO洗涤对碱金属和碱土金属（AAEM）的去除率最高。在热解产物中，来自APBO洗涤样品的生物油具有最高的质量、能量和碳产率，最低的水含量为36.9%，最高的HHV为17.2 MJ/kg，以及最高的脱水糖相对含量为31.2%。其生物炭灰分最低，为27.3%，比表面积最高，为98.6m2/g，不凝性气体HHV最高，为11.9MJ/m3。因此，APBO洗涤在改善生物质及其后续热解产物的质量方面是有效的。
Washing pretreatments of rice straw were performed using three different solutions, namely water, dilute hydrochloric acid solution (HCl solution, pH = 2.9), and aqueous phase bio-oil (APBO, pH = 2.9). The raw and pretreated samples were pyrolyzed at 550 degrees C in a fixed bed reactor. Results showed that among the three pretreatments, washing with APBO had the highest removal efficiency of alkali metal and alkaline earth metals (AAEMs). Among the pyrolysis products, bio-oil from APBO washed sample had the highest mass, energy, and carbon yields, lowest water content of 36.9%, highest HHV of 17.2 MJ/kg, and highest relative content of an-hydrosugars of 31.2%. Its biochar had the lowest ash content of 27.3% and highest specific surface area of 98.6m(2)/g, and its non-condensable gases had the highest HHV of 11.9 MJ/m(3). Therefore, APBO washing was effective in improving the quality of biomass and its subsequent pyrolysis products.