脱碱赤泥对餐厨垃圾催化热解产物分布的影响  

Effect of de-alkalized red mud on the distribution of catalytic pyrolysis products from food waste

作　　者：刘亮[1] 曾宏亮 卿梦霞 贺梓航 吴佳俊 康向京 向军[2] 刘一帆 LIU Liang;ZENG Hong-liang;QING Meng-xia;HE Zi-hang;WU Jia-jun;KANG Xiang-jing;XIANG Jun;LIU Yi-fan(School of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China;Power China Real Estate Group Ltd,Beijing 100097,China)

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410114 [2]华中科技大学,煤燃烧国家重点实验室,湖北武汉430074 [3]中国电建地产集团有限公司,北京100097

出　　处：《中国环境科学》2024年第10期5678-5686,共9页China Environmental Science

基　　金：国家自然科学基金资助项目(52106131);湖南省研究生创新项目(CX20220929);湖南省教育厅重点项目(21A0201)。

摘　　要：本文采用固定床反应器、气相色谱-质谱联用仪(GC-MS)、荧光分光光度计(UV-F)和原位红外(In-situ DRIFTS)等方法探究了不同热解温度下脱碱赤泥对餐厨垃圾热解产物分布的影响.结果表明,相同热解温度下,脱碱赤泥能够抑制热解气的生成,促进热解油的生成且在450℃时产率最高为39.46%.热解油主要以脂肪酸、N化合物和酯类为主.由于脱碱赤泥不仅能促进甘油三酯的分解产生长链羧酸,还能促进了蛋白质裂解产生芳香蛋白类物质,使得热解油中的酸类含量增加和芳构化程度加深.同时热解焦中的羧酸官能团和C≡N吸收峰显著升高进一步验证了脱碱赤泥能够促进热解油中酸类和N化合物的生成.In this paper,the effects of de-alkalized red mud on the distribution of food waste pyrolysis products at different pyrolysis temperatures were investigated using a fixed bed reactor,Gas Chromatography-Mass Spectrometry(GC-MS),Fluorescence Spectrophotometry(UV-F),and In-Situ Infrared(In-situ DRIFTS).The results showed that under the same pyrolysis temperature,the formation of pyrolysis gas was inhibited and the production of pyrolysis oil was promoted,with the highest yield of 39.46%at 450℃,by de-alkalized red mud.The pyrolysis oil was mainly dominated by fatty acids,N compounds,and esters.Not only was the decomposition of triglycerides promoted to produce long-chain carboxylic acids but also the cleavage of proteins was promoted to produce aromatic proteins by de-alkalized red mud,which led to the increase of acid content and deepening of the degree of aromatization in the pyrolysis oil.Meanwhile,the significant growth of carboxylic acid functional groups and C≡N absorption peaks in pyrolysis coke further confirmed that the de-alkalized red mud could promote the production of acids and N compounds in pyrolysis oil.

关 键 词：脱碱赤泥 餐厨垃圾 催化热解 热解油产物分布 

分 类 号：X705[环境科学与工程—环境工程]