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[求助]
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| 以萃取后的FCC油浆(FCCE)和煤沥青为原料通过共炭化反应制备针状焦，考察了原料配比、共炭化时间、热聚合温度、压力和时间对成焦的影响。结果表明，原料中煤沥青比例的增加能提高芳香族化合物的含量，共炭化反应能降低原料的缩合程度，促进了针状纤维结构的生成，实验中煤沥青与萃取后的FCC油浆(FCCE)以9:1的配比共炭化10h以后的原料制备出的针状焦有优异的流线-针状结构。适当的压力、温度和聚合时间能保证中间相小球在低黏度充分的生长、融并成针状结构。原料在0.7MPa、550℃下聚合12h，得到的针状焦呈良好的流线型结构。 |
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【答案】应助回帖
| Preparation of needle coke as raw materials after the extraction of the FCC slurry oil (FCCE) and coal tar pitch through a total of carbonization reaction to study the ratio of raw materials, a total of carbonization time, thermal polymerization temperature, pressure and time into focus. The results showed that the raw material increase in the proportion of coal tar pitch can improve the content of aromatic compounds, a total of carbonization reaction can reduce the degree of condensation of the raw materials to promote the formation of needle-like fiber structure of the coal tar pitch in the experiment after extraction FCC slurry oil (FCCE the needle coke) prepared from a 9:1 ratio, carbonization 10h excellent flow lines - needle-like structure. Appropriate pressure, temperature and polymerization time to ensure adequate growth of the middle phase of the ball in the low viscosity melt and into needle-like structure. Raw materials 0.7MPa, 550 ° C polymerization 12h, needle Jiaocheng Liang get a good streamlined structure. |
2楼2012-04-26 17:36:47
3楼2012-04-26 18:09:56