餐厨废物水热反应减重的关键影响因素及运行参数研究  

Research on the key influencing factors and operating parameters for the weight reduction of kitchen waste achieved by hydrothermal reaction

作　　者：刘冠宏 臧宇飞 刘兵 陈飞勇 王静[1] 史水合 孙秀芹 张瑞娜 LIU Guanhong;ZANG Yufei;LIU Bing;CHEN Feiyong;WANG Jing;SHI Shuihe;SUN Xiuqin;ZHANG Ruina(Resources and Environment Innovation Institute,Shandong Jianzhu University;Heze Ecological Environment Monitoring Center of Shandong Province;Shandong Coalfield Geological Planning Research Institute;Shanghai Environmental Engineering Design and Research Institute)

机构地区：[1]山东建筑大学资源与环境创新研究院 [2]山东省菏泽生态环境监测中心 [3]山东省煤田地质规划勘察研究院 [4]上海环境卫生工程设计研究院有限公司

出　　处：《环境工程技术学报》2024年第1期210-215,共6页Journal of Environmental Engineering Technology

基　　金：国家重点研发计划项目(2022YFE0105800);住房和城乡建设部研究开发项目(2021-K-113);山东省自然基金面上项目(ZR2020ME236);山东省高端人才项目支持计划(0031504);教育部春晖计划项目(202202031)。

摘　　要：运用水热炭化工艺,研究不同温度(170~270℃)、停留时间(0~100 min)、料液比(1∶1、1∶3、1∶9)对餐厨废物水热反应减重的影响,并对运行参数进行优化。结果表明:升高温度,餐厨废物的减重率也随之提高,且减重率均在91%以上;随着停留时间的延长,减重率在20~40和80~100 min时会有小幅度的增长,在0~100 min的停留时间内减重率从83.90%增至86.80%;料液比的增加会使减重率下降,料液比为1∶9、1∶3、1∶1时,对应的减重率分别为91.60%~91.87%、86.20%~87.00%、83.90%~88.10%。液相产物COD测定结果表明,反应温度和料液比是影响液相产物COD的主要因素,随着反应的进行,液相产物COD先是逐渐减小并趋于平稳,后略有增加。试验得到的水热炭高位热值为30.50~31.90 MJ/kg,高于国家标准煤热值29.30MJ/kg。Using the hydrothermal carbonization process,the effect of varying temperatures(170 to 270℃),residence time(0 to 100 min),and solid-water ratios(1∶1,1∶3,and 1∶9)on the weight reduction of hydrothermal reaction of kitchen waste was researched,and the operating parameters were optimized.The findings of this test revealed that as the temperature rose,the weight loss rate of kitchen waste increased,reaching a value of over 91%.The weight loss rate increased slightly as the residence time extended from 20 to 40 minutes and from 80 to 100 minutes.During the residence times of 0 to 100 minutes,the weight loss rate increased from 83.90%to 86.80%.A higher solid-water ratio would have a negative impact on the weight loss rate.The corresponding weight loss rates were 91.60%to 91.87%,86.20%to 87.00%and 83.90%to 88.10%at solid-water ratios of 1∶9,1∶3 and 1∶1,respectively.The solid-water ratio and the reaction temperature were the main factors affecting COD of the liquid products,which initially gradually decreased and leveled off as the reaction progressed before slightly increasing.This was demonstrated by the results of COD measurement of the liquid products.The higher heating value of hydrochar obtained in the test was 30.50 to 31.90 MJ/kg,which was greater than the national standard coal calorific value of 29.30 MJ/kg.

关 键 词：水热炭化 餐厨废物 生物炭 水热反应 减重率 

分 类 号：X705[环境科学与工程—环境工程]