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程序升温热重法研究神府高温煤焦-CO2气化反应性
引用本文:顾菁,李莉,吴诗勇,吴幼青,高晋生.程序升温热重法研究神府高温煤焦-CO2气化反应性[J].医学教育探索,2007(3):354-358.
作者姓名:顾菁  李莉  吴诗勇  吴幼青  高晋生
作者单位:华东理工大学能源化工系;
基金项目:国家重点基础研究规划项目(2004CB217704)
摘    要:在制焦温度为1223~1773 K内,制备了慢速和快速神府煤焦,采用程序升温热重法研究了煤焦-CO2高温气化反应性。主要研究了升温速率、制焦温度和热解速率对煤焦反应性的影响,并对一种高温慢速热解焦(制焦温度为1573 K)的程序升温和等温动力学进行了比较。结果表明:升温速率对煤焦-CO2气化反应有明显影响;制焦温度较高的煤焦反应性较低;快速热解有利于提高煤焦的反应性;由程序升温法和等温法所得活化能随转化率变化呈现不同的趋势,但所得活化能的平均值分别为160.13 kJ/mol和163.21 kJ/mol,十分接近。

关 键 词:煤焦  CO2气化  程序升温热重法  高温热解  

Measurement of CO2 Gasification Reactivity for High Temperature Pyrolyzed Coal Chars by Temperature-Programmed Thermogravimetry
GU Jing,LI Li,WU Shi-yong,WU You-qing,GAO Jin-sheng.Measurement of CO2 Gasification Reactivity for High Temperature Pyrolyzed Coal Chars by Temperature-Programmed Thermogravimetry[J].Researches in Medical Education,2007(3):354-358.
Authors:GU Jing  LI Li  WU Shi-yong  WU You-qing  GAO Jin-sheng
Institution:Department of Chemical Engineering for Energy Resources;East ChinaUniversity of Science and Technology;Shanghai 200237;China
Abstract:The slow and rapid coal char samples were prepared at elevated temperatures ranging from(1 223 K) to 1 773 K by temperature-programmed and isothermal pyrolysis. Investigations were performed to determine the effects of heating rate,pyrolysis temperature,and pyrolysis rate on the chars,CO_2 gasification reactivity as measured by temperature-programmed thermogravimetry.Reaction kinetics of slow(pyrolysis) at 1 573 K under programmed heating was obtained and compared to that of the isothermal case.The CO_2 gas...
Keywords:coal char  CO_2 gasification  temperature-programmed thermogravimetry  elevated temperature pyrolysis  
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