兰炭燃烧特性  

Combustion characteristics of semi coke

作　　者：杜凯 刘宇轩 郑娥 李健[1] 李霄[1] 袁志龙 王玉飞[1] DU Kai;LIU Yuxuan;ZHENG E;LI Jian;LI Xiao;YUAN Zhilong;WANG Yufei(College of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000

出　　处：《化工科技》2024年第2期52-56,共5页Science & Technology in Chemical Industry

基　　金：陕西省教育厅青年创新团队研究项目(23JP199);榆林市科技局科学技术研究与开发项目(CXY-2022-82);榆林学院高层次人才科研启动基金项目(2023GK44);中国科学院洁净能源创新研究院-榆林学院联合基金项目(YLUDNL202202,2021018);榆林学院横向项目(2022HX347)。

摘　　要：利用热重分析法探究兰炭的燃烧特性,考察兰炭粒径、4种助燃剂[MnO_(2)、Fe_(2)O_(3)、柠檬酸钠、Ca(OH)_(2)]、w(柠檬酸钠)对兰炭燃烧特性的影响。结果表明,减小兰炭粒径有助于改善其燃烧特性;柠檬酸钠能够有效降低兰炭的着火温度、50%有机质燃尽温度,其着火温度由461.9℃降至409.5℃、50%有机质燃尽温度由626.3℃降至584.9℃;w(柠檬酸钠)<3.0%,兰炭的着火温度、50%有机质燃尽温度下降明显,其燃烧速率也基本保持不变,但随着w(柠檬酸钠)增多,兰炭的各项特征温度下降缓慢,燃烧速率下降明显,表明适量加入柠檬酸钠有利于改善兰炭的燃烧特性。The combustion characteristics of semi coke are studied by using thermogravimetric analysis.The effects of particle size,four combustion aids(MnO 2,Fe 2O 3,sodium citrate,Ca(OH)2),and w(sodium citrate)on the combustion characteristics of semi coke are examined.The results indicate that reducing the particle size of semi coke helps to improve its combustion characteristics.Sodium citrate can effectively reduce the ignition temperature of semi coke and the burnout temperature of 50%organic matter.Its ignition temperature has decreased from 461.9℃to 409.5℃,and the burnout temperature of 50%organic matter has decreased from 626.3℃to 584.9℃.When w(sodium citrate)is less than 3.0%,the ignition temperature and 50%organic matter burnout temperature of semi coke decrease significantly,and its combustion rate remains basically unchanged.However,as w(sodium citrate)increases,the characteristic temperatures of semi coke decrease slowly,and its combustion rate decreases significantly.This indicates that adding sodium citrate in an appropriate amount is beneficial for improving the combustion characteristics of semi coke.

关 键 词：兰炭 助燃剂 燃烧特性 热重分析 

分 类 号：TQ534[化学工程—煤化学工程]