摘要
采用固定床反应器,在氩气氛围下,对我国四种不同产地的无烟煤从400℃到1200℃进行热解试验,研究了燃料氮中Tar N,HCN,NH3,Char N的析出规律,以及燃料氮中N的分布特性。研究结果发现HCN N的析出量随热解温度的升高而增加,NH3 N的析出量在1000℃左右达到最大值而后略有降低,Char N的含量呈现反趋势下降。1000℃以上,NH3 N的析出量及HCN N+NH3 N的析出量随挥发分增加而降低。Tar N的含量在整个温度范围内都比较少,基本不随温度而变化。
Using a fixed-bed pyrolysis reactor, the formation of Tar-N, HCN, NH_3 and Char-N out of four kinds of blind coal from different producing areas,as well as the characteristics of released N on the fuel nitrogen,were studied between 400?℃～1?200?℃ under an Ar atmosphere. It was shown that HCN yield increased with increasing temperature from 400?℃ to 1?200?℃, while the yield of NH_3 increased to its maximum at 1?000?℃, followed by a slight decreasing. In contrast, Char-N yield decreased with increasing temperature. At ≥1?000?℃, the yield of NH_3-N and NH_3-N +HCN-N decreased as the volatiles of parent coal increased. Tar-N yield was little and almost had no change in all temperature range for all coals.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2003年第6期538-542,共5页
Journal of Fuel Chemistry and Technology
基金
国家重点基础研究发展规划项目(G1999022204 03)~~
