本文選題：油砂瀝青 + 機(jī)械雜質(zhì)��； 參考：《化工進(jìn)展》2016年12期

【摘要】：溶劑萃取法分離油砂制得油砂瀝青中含大量機(jī)械雜質(zhì),影響瀝青的品質(zhì)及后期加工利用。通過XRD和激光粒度儀表征了機(jī)械雜質(zhì)的礦物組成和粒度分布等特性。針對機(jī)械雜質(zhì)的特性,開發(fā)了復(fù)配試劑,通過稀釋劑降黏瀝青、復(fù)配試劑凈化瀝青、稀釋劑回收再生及循環(huán)利用3個操作單元對油砂瀝青進(jìn)行了脫雜凈化實(shí)驗(yàn),并分析了凈化機(jī)理。結(jié)果表明:降黏過程,溫度70℃、時間10min、稀釋劑與瀝青比0.3g/g,稀釋瀝青70℃黏度為3.2Pa·s;凈化過程,6%鹽酸與稀釋瀝青比0.2m L/g、Ca Cl2與稀釋瀝青比0.01g/g,溫度70℃,混合時間10min,沉降時間20min,機(jī)械雜質(zhì)脫除率可達(dá)到93.5%;回收及循環(huán)過程,稀釋劑回收率為98%,循環(huán)使用5次,機(jī)械雜質(zhì)脫除率仍92%以上。該工藝具有沉降時間短、機(jī)械雜質(zhì)脫除徹底的優(yōu)點(diǎn)。
[Abstract]:A large amount of mechanical impurity in oil sand asphalt was obtained by solvent extraction, which affected the quality of asphalt and its later processing and utilization. The mineral composition and particle size distribution of mechanical impurity were characterized by XRD and laser particle size meter. According to the characteristics of mechanical impurity, the compound reagent was developed. The deimpurity and purification experiments were carried out through three operation units, that is, reducing viscosity asphalt with diluent, purifying asphalt with compound reagent, recovering and regenerating diluent, and recycling utilization. The purification mechanism was analyzed. The results show that in the viscosity reduction process, the temperature is 70 鈩，

本文編號：1775192