厕所粪便与粗甘油共液化制备生物原油研究  

Biocrude oil production via co-liquefaction of toilet feces and crude glycerol

作　　者：王影娴 吴向阳 王猛 卢建文 张源辉 刘志丹[1] Wang Yingxian;Wu Xiangyang;Wang Meng;Lu Jianwen;Zhang Yuanhui;Liu Zhidan(Laboratory of Environment-Enhancing Energy(E2E),Key Laboratory of Agricultural Engineering in Structure and Environment,Ministry of Agriculture and Rural Affair,College of Water Resources and Civil Engineering,China Agricultural University,Beijing,100083,China;Department of Agricultural and Biological Engineering,University of Illinois at Urbana-Champaign,Urbana,IL 61801,USA)

机构地区：[1]中国农业大学水利与土木工程学院农业农村部设施农业工程重点实验室,环境增值能源实验室,北京100083 [2]美国伊利诺伊大学香槟校区农业与生物工程系,伊利诺伊IL61801

出　　处：《农业工程学报》2019年第22期181-186,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：美国比尔及梅琳达·盖茨基金会项目(RTTC-C-R2-01-001);国家自然科学基金(U1562107)

摘　　要：水热液化是处理湿有机废弃物并实现能源化的技术之一。以厕所粪便和粗甘油为原料进行水热液化,探究了不同质量比例的厕所粪便和粗甘油(1∶0、3∶1、2∶1、1∶1、1∶2、1∶3、0∶1)对产物分布和油品特性的影响。粪便与粗甘油的比例混合为1∶3时,生物原油的产油率最高为40.6%,液化率最高为94.8%,相比单组分厕所粪便分别提高了18%和15%,表明粗甘油对粪便水热液化的产物转化具有促进作用。当在粪便中添加粗甘油时,水热液化生物原油的热值变化了0.27%~8.88%,含水率降低了11.5%~85.2%;所含烃类物质高达21.1%,酸类物质降低到14.4%,表明生物原油更稳定;增加了生物原油中的轻组分成分,残渣含量降低了25.2%~53.2%,进一步表明粗甘油可以改善粪便水热液化生物原油的油品质量。Hydrothermal liquefaction(HTL) is a kind of technology that can convert wet organic waste into energy. Toilet feces contain many pathogens, which can cause pollution to groundwater. Crude glycerol is a byproduct in the process of bio-diesel production. The rational utilization of crude glycerol is of great importance to reduce the cost and mitigate the environmental pollution in large-scale bio-diesel production. By doing this, we can achieve the harmless treatment of toilet feces, the reuse of crude glycerol, and energy production. In this study, the toilet feces and crude glycerol were used as the feedstock for biocrude oil production via hydrothermal liquefaction(HTL). The effects of different mass ratios of toilet feces to crude glycerol(1∶0, 3∶1, 2∶1, 1∶1, 1∶2, 1∶3, 0∶1) on the liquefaction products(biocrude oil, aqueous phase, solid residue and gas) yield, liquefaction rate, energy recovery rate and biocrude oil properties were investigated at the optimal reaction condition(reaction temperature: 340 ℃, retention time: 10 min, and total solid: 25%) from the previous study. The highest biocrude oil yield of 40.6% reached under the mass ratio of toilet feces to crude glycerol 1∶3, increased by 18% compared with using feces only. Meanwhile, the highest liquefaction rate was 94.8%, increased by 15%. Crude glycerol had a beneficial effect on the HTL conversion of toilet feces. This was due to the methanol and organic acids in crude glycerol, which could promote the formation of biocrude oil during HTL. The high heating value(HHV) of biocrude oil was 40.29 MJ/kg, increased by 97.8% compared with toilet feces. However, adding crude glycerol to the toilet feces had little effect on the HHV of biocrude oil. The lowest water content in biocrude oil was 0.23% under the mass ratio of toilet feces to crude glycerol 1:2. Gas chromatograph-mass spectrometer(GC-MS) was performed to understand the composition of biocrude oil. The hydrocarbons contents of biocrude were increased after adding crude glycerol t

关 键 词：废弃物 粪便 水热液化 粗甘油 生物原油 

分 类 号：S2[农业科学—农业工程]