CAJ | 학술논문

以鞍钢改质沥青为原料，采用单溶剂萃取法过滤脱除原料沥青中的喹啉不溶物(QI)，再用常压蒸馏去除溶剂，得到QI含量小于0.1%的净化沥青。考察了料液比、恒温时间和恒温温度对改质煤沥青QI净化效果的影响。结果表明，净化最佳工艺参数为料液比1∶1.5~1∶3，恒温时间1 h，恒温温度140℃。在最佳工艺条件下得到的净化沥青软化点为62℃，QI含量为0，TI含量为19.1%，结焦值为47.77%。采用红外光谱对净化沥青进行表征，结果表明，原料沥青经过萃取过滤后芳香烃类结构减少，脂肪烃类结构增加。该净化沥青QI较低，结焦残炭率较高，可作为制备浸渍剂沥青、煤基炭纤维等炭素材料的优质原料。
이안강개질력청위원료，채용단용제췌취법과려탈제원료력청중적규람불용물(QI)，재용상압증류거제용제，득도QI함량소우0.1%적정화력청。고찰료료액비、항온시간화항온온도대개질매력청QI정화효과적영향。결과표명，정화최가공예삼수위료액비1∶1.5~1∶3，항온시간1 h，항온온도140℃。재최가공예조건하득도적정화력청연화점위62℃，QI함량위0，TI함량위19.1%，결초치위47.77%。채용홍외광보대정화력청진행표정，결과표명，원료력청경과췌취과려후방향경류결구감소，지방경류결구증가。해정화력청QI교저，결초잔탄솔교고，가작위제비침지제력청、매기탄섬유등탄소재료적우질원료。
Quinoline insolubles (QI) in raw coal pitch was filtrated and removed by using the single solvent-extraction method in this paper, and then the solvent was removed by atmospheric distillation to obtain refined coal pitch with low QI content (<0.1%). The effects of the ratio of pitch to solvent, thermostatic time and thermostatic temperature on the removal rate of QI in refined coal pitch were investigated. The results showed that the optimum purification process parameters were: the range of solid and solvent of 1∶1.5~1∶3, the constant temperature time of 1 h, and the thermostatic temperature of 140℃. The softening point, QI content, TI con-tent and coking value of refined asphalt under the condition of optimum process were 62℃, 0, 19.1%and 47.77%, respectively. The purification asphalt was characterized by infrared spectrum, which showed that the content of aromatic hydrocarbons decreased and that of fat hydrocarbons increased after extraction filter. This purified tar exhibits low QI and high coking value, which could be used as the quality raw materials for the impregnant pitch and coal based carbon fibers.