摘要
实验以5种不同原料特性的石油焦为研究对象,考察了在相同煅烧温度(1 300℃)下原料中的杂质元素和不同煅烧升温速率(0.5～6.4℃/min)对煅后焦性能的影响规律。结果表明:只有当石油焦中S含量大于4%时,其煅后焦的真密度才会受到煅烧升温速率的影响;无论采取何种升温速率,高灰分石油焦均不利于获得低电阻率的煅后焦,而高S和V含量的石油焦有利于获得较低电阻率的煅后焦;升温速率对煅后焦空气及CO2反应性的影响作用很小,但杂质元素Ca是CO2反应性的强烈催化剂。
Through investigating five kinds of petroleum cokes with different properties, this paper studied the calcined coke property changes caused by impurities in the coke and different heating rate（0.5-6.4℃/min） under the same final calcination temperate of 1 300℃. Result shows that heating rates can affect the real density of calcined coke only when the sulfur content in green petroleum coke is higher than 4%. No matter what heating rate is adopted, high ash content is harmful to calcined coke conductivity, while high sulfur content and high vanadium content are beneficial. Compared to the strong catalysis of calcium for the CO2 reactivity of calcined coke, heating rate has little influence on calcined coke air and CO2 reactivity.
出处
《炭素技术》
CAS
北大核心
2013年第5期1-4,共4页
Carbon Techniques
关键词
杂质元素
煅烧
升温速率
煅后焦
Impurity elements
calcination
heating rate
calcined coke
