| 不同水热条件对秸秆微波水热碳化产物组成和结构特性影响 |
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| 引用本文： | 牛文娟,黄金芝,钟菲,张诗麟,孟令凯,朱彤,袁巧霞.不同水热条件对秸秆微波水热碳化产物组成和结构特性影响[J].农业工程学报,2019,35(10):205-213. |
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| 作者姓名： | 牛文娟 黄金芝 钟菲 张诗麟 孟令凯 朱彤 袁巧霞 |
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| 作者单位： | 1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070,1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070,2. 湖北工程学院化学与材料科学学院，孝感 432000,1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070,1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070,1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070,1. 农业农村部长江中下游农业装备重点实验室，华中农业大学工学院，武汉 430070 |
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| 基金项目： | 国家自然科学基金（No. 31701310）；中央高校基本科研业务费专项（No. 2662015QD009） |
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| 摘 要： | 为了解秸秆微波水热碳化过程中产物形成机制及其理化结构演变规律,该文采用控制变量法进行了单因素试验设计,研究了水热温度、停留时间、催化剂和原料种类对秸秆微波水热产物组成和结构特性的影响。结果表明,随着水热温度升高和停留时间延长,液相产物的pH值先降低后增加,最低值为3.13,电导率和PO_4~(3-)–P质量浓度先增加后下降,最大值分别为9.38 mS/cm和308 mg/L,NH_4~+–N质量浓度增加,260℃最大值为155 mg/L,而水热焦的产率、H/C和O/C下降,固定碳、C、高位热值增加。高温和长停留时间使水热焦生成较多纳米碳微球结构,且使其O-H键先增多后减少。高温和K_2CO_3使水热焦的芳香烃结构和C=O、C–O含氧官能团增强,而长停留时间使其先增强后减弱。高温和长停留时间使水热焦的比表面积、孔体积和孔径均先增加后降低,而K_2CO_3使水热焦的纳米碳微球和比表面积增加,最大比表面积为10.975 9 m~2/g。玉米秆、水稻秆和油菜秆水热焦的纳米碳微球结构最明显,棉花秆水热焦的比表面积和孔体积最大。
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| 关 键 词： | 秸秆 温度 微波水热 水热焦 停留时间 结构特征 |
| 收稿时间： | 2018/10/8 0:00:00 |
| 修稿时间： | 2019/4/19 0:00:00 |
Effects of different hydrothermal conditions on compositions and structural characteristics of microwave-assisted hydrothermal carbonization products from crop residues |
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| Niu Wenjuan,Huang Jinzhi,Zhong Fei,Zhang Shilin,Meng Lingkai,Zhu Tong and Yuan Qiaoxia.Effects of different hydrothermal conditions on compositions and structural characteristics of microwave-assisted hydrothermal carbonization products from crop residues[J].Transactions of the Chinese Society of Agricultural Engineering,2019,35(10):205-213. |
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| Authors: | Niu Wenjuan Huang Jinzhi Zhong Fei Zhang Shilin Meng Lingkai Zhu Tong and Yuan Qiaoxia |
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| Institution: | 1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China,1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China,2. College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China,1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China,1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China,1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China and 1. Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China |
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| Abstract: | |
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| Keywords: | straw temperature microwave-assisted hydrothermal hydrothermal coke retention time structural characteristic |
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