工程科学学报2016，Vol.38Issue(11)：1539-1545,7.DOI:10.13374/j.issn2095-9389.2016.11.005
分段尝试法研究半焦/CO2气化反应过程动力学
A sectioning method to study the gasification reaction kinetics of semicoke with CO2
摘要
Abstract
Non-isothermal experiments were carried out at different heating rates to further study the gasification reaction kinetics of semicoke with CO2 , and the gasification mechanisms of Fuding semicoke with CO2 were confirmed in different stages. Then, it is reasonable to adopt a attempting method of subsection to study the gasification reaction kinetics and confirm the mechanism functions of the earlier and later periods in the reaction process, which are f(α)=(1-α)[1-ψln(1-α)]1/2 and f(α)=(3/2)[(1-α) -1/3-1] -1 , so the related kinetic parameters and corresponding dynamic models in different stages of the process are established. After data-fitting of the kinetic models in different stages, experimental data fit well with these models and the correlation coefficients are above 0. 98. At last, according to the calculated kinetic parameters, it is clearly realized that there is compensatory effect for the activation energy at different heating rates, which is a relational expression between the activation energy and the pre-exponential factor.关键词
半焦/二氧化碳/气化反应/反应动力学/研究方法Key words
semicoke/carbon dioxide/gasification reaction/reaction kinetics/study methods分类
矿业与冶金引用本文复制引用
张黎,吴铿,杜瑞岭,巢昌耀,徐大安..分段尝试法研究半焦/CO2气化反应过程动力学[J].工程科学学报,2016,38(11):1539-1545,7.基金项目
国家自然科学基金资助项目(51274026) （51274026）
榆林市科技计划资助项目(2014cxy-06) （2014cxy-06）
陕西省自然科学基础研究基金面上资助项目(2016JM5028) （2016JM5028）
