文献类型：期刊文献

中文题名：Characteristics of single petcoke particle during the gasification process at high temperatures

英文题名：Characteristics of single petcoke particle during the gasification process at high temperatures

作者：Ming Liu[1,2];Zhongjie Shen[1,2];Qinfeng Liang[1,2];Jianliang Xu[1,2];Haifeng Liu[1,2]

机构：[1]Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education,East China University of Science and Technology,Shanghai 200237,China;[2]Shanghai Engineering Research Center of Coal Gasification,East China University of Science and Technology,Shanghai 200237,China

年份：2019

卷号：27

期号：10

起止页码：2427

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：中国化学工程学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：Supported by the National Natural Science Foundation of China(U1402272);the Shanghai Engineering Research Center of Coal Gasification(18DZ2283900).

语种：英文

中文关键词：Petcoke;particle;Reaction;kinetics;Pore;growth;Reaction;mechanism;High;temperature;gasification

外文关键词：Petcoke particle;Reaction kinetics;Pore growth;Reaction mechanism;High temperature gasification

摘要：Particle concentration significantly affected the gasification of petcoke particles according to our previous studies.In this work,gasification characteristics and morphological evolution of single petcoke particle were investigated using a high temperature stage microscope experimental setup.The results showed that the reaction temperature significantly affected the reactivity of petcoke in the temperature range of 1200–1300°C.While the promoting effect on gasification reactivity decreased with further increasing the reaction temperature,the SEM analysis demonstrated the pore development during the gasification process,which attributed to the increase of reaction rate with conversion.The Raman analysis,HRTEM and SEM–EDX analysis showed that the heterogeneous graphitization of petcoke and non-uniform distribution of catalytic elements in petcoke attributed to the development of surface pores with limited depth.The gasification mechanism of petcoke particle can be briefly described as the reaction rate mainly contributed from the fast-reaction area.Besides,the pore development in fast-reaction area also enlarged the surface area of petcoke particle.
Particle concentration significantly affected the gasification of petcoke particles according to our previous studies.In this work, gasification characteristics and morphological evolution of single petcoke particle were investigated using a high temperature stage microscope experimental setup. The results showed that the reaction temperature significantly affected the reactivity of petcoke in the temperature range of 1200–1300 °C.While the promoting effect on gasification reactivity decreased with further increasing the reaction temperature,the SEM analysis demonstrated the pore development during the gasification process, which attributed to the increase of reaction rate with conversion. The Raman analysis, HRTEM and SEM–EDX analysis showed that the heterogeneous graphitization of petcoke and non-uniform distribution of catalytic elements in petcoke attributed to the development of surface pores with limited depth. The gasification mechanism of petcoke particle can be briefly described as the reaction rate mainly contributed from the fast-reaction area. Besides,the pore development in fast-reaction area also enlarged the surface area of petcoke particle.