文献类型：期刊文献

英文题名：Characterization of hydrochar and process water formed by hydrothermal carbonization of waste wood containing urea-formaldehyde resin

作者：Shi, Ning Tang, Shiyun Liu, Ying Chen, Lijun Zhang, Hongyan Huang, Hongsheng Liu, Yunhua

第一作者：石宁

通信作者：Shi, N[1]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：0

外文期刊名：BIOMASS CONVERSION AND BIOREFINERY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000725438500001)】；

基金：This research received support from the Natural Science Foundation of Guizhou Province (QiankeheJichu [2020] 1Y239), High Level Scientific Research Funding Project of Guizhou Institute of Technology (XJGC20190636), and the Natural Science Foundation of Guizhou Provincial Department of Education (Qianjiaohe KY Zi [2017]009).

语种：英文

外文关键词：Hydrothermal carbonization; Waste wood; Hydrochar; Process water; Solid fuel

摘要：Conversion of waste wood containing urea-formaldehyde resin (WW-UF) into solid fuel with lower nitrogen content and better fuel property through the hydrothermal carbonization (HTC) process was studied. With the increase of HTC temperature from 180 to 260 degrees C, the mass yield and energy yield of the hydrochar decreased from 81.2 to 38.7% and from 81.6 to 62.3%, respectively, while the higher heating values (HHV) of the hydrochar increased from 19.2 to 27.1 MJ/kg. Due to the hydrolysis of urea-formaldehyde resin into urea, the denitrogenation efficiency could reach over 80% at 180 degrees C. However, the denitrogenation efficiency decreased at elevated HTC temperature because of the condensation/polymerization of urea with carbohydrate derivatives. The combustion and pelletization behaviors of the hydrochar were all improved compared to that of the raw WW-UF. FT-IR spectra confirmed that the UF resin and hemicellulose in the WW-UF could be hydrolyzed at 180 degrees C, but carbonization of cellulose occurred with HTC temperature over 240 degrees C. The process water was analyzed by LC-MS/MS to confirm that the mono-saccharides, carboxylic acids, carbocyclic compounds, O-heterocyclic compounds, and N-heterocyclic compounds were presented in process water. The study confirmed that hydrothermal carbonization could be one promising method to covert the WW-UF into clean and efficient solid fuel.