文献类型：期刊文献

中文题名：高温气相炭化焦的物理结构及CO2气化活性

英文题名：Physical Structures and CO_2 Gasification Activity of Gas-Phase Carbonization Chars Prepared at High Temperatures

作者：黄胜[1];吴幼青[1];吴诗勇[1];高晋生[1];向军[2];张军营[2]

机构：[1]华东理工大学资源与环境工程学院,煤气化教育部重点实验室,上海200237;[2]华中科技大学煤燃烧国家重点实验室,武汉430074

年份：2011

卷号：37

期号：1

起止页码：26

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(20876050);国家重点基础研究发展规划“973”项目(2010CB227003-5);煤燃烧国家重点实验室开放基金(fsklcc0911)

语种：中文

中文关键词：气相炭化焦;物理结构;碳微晶;气化活性

外文关键词：gas-phase carbonization char; physical structures; carbon micro-crystalline; gasification activity

摘要：以石油醚和蒽油为原料,在炭化温度为1 000-1 300°C的条件下制备了两种气相炭化焦,主要考察了这两种高温气相炭化焦的物理结构和CO2气化活性,并与液相炭化焦和煤焦进行了对比。结果表明：石油醚气相炭化以裂解和缩聚反应并存,而蒽油气相炭化以缩聚反应为主;两种气相炭化焦的颗粒均为均匀的球形颗粒（粒径为0.1-0.5μm）,且随炭化温度增加,颗粒粒径减小,焦块结构趋于致密化;炭化温度增加有利于气相炭化焦的碳微晶结构向有序化方向发展,在相同炭化温度下,气相炭化焦最具石墨化倾向,液相炭化焦次之,煤焦最小;炭的气化活性不是仅由碳微晶结构唯一决定的,不同炭化过程所形成焦的气化活性顺序为：煤焦〉气相炭化焦〉液相炭化焦。
Two kinds of gas-phase carbonization chars,respectively using petroleum ethers and anthracene oils as raw materials,were prepared in the carbonization temperature of 1 000—1 300（°C）.The physical structure and CO2 gasification activity of these chars were mainly investigated,and then were compared with those of liquid-phase carbonization chars and coal chars.The main conclusions were drawn as follows.There co-existed the cracking and polymerization reactions in the gas-phase carbonization of petroleum ethers,and the gas-phase carbonization of anthracene oils was mainly dominated by the polymerization reaction.The particles（diameter of 0.1—0.5 μm） from the two kinds of gas-phase carbonization chars presented uniformly spherical.With the increasing carbonization temperature,the diameter of char particles decreased and the mass of chars became denser in the gas-phase carbonization process.An elevated carbonization temperature was favorable for a more ordered carbon micro-crystalline structure of gas-phase carbonization chars.At the same carbonization temperature,the graphitization tendency of gas-phase carbonization chars was the largest,followed by that of liquid-phase carbonization chars,and that of coal chars was the least.The micro-crystalline structure of carbon was not the exclusive factor affecting its gasification activity.The gasification activities of chars prepared in different carbonization processes presented the following order： coal charsgas-phase carbonization charsliquid-phase carbonization chars.