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使用甲苯、正庚烷、石油醚和石脑油,辅以阳离子聚丙烯酰胺和离子液体等助剂对加拿大亲水型油砂进行了萃取实验,并从沥青回收率、沥青中细沙夹带和残砂形貌3个角度对沥青分离效果进行了分析评价,最终认为阳离子聚丙烯辅助石脑油萃取油砂沥青是一种经济可行的工艺路线。随后文章从助剂浓度、助剂存放时间、助剂和油砂比例、溶剂和油砂比例等角度出发,对工艺参数进行了优化。结果表明,在室温条件下,当石脑油∶0.05%CPAM水溶液∶油砂为3∶2∶1时,沥青回收率由72.29%提升至78.29%。此外,通过对沥青的红外分析和残砂的扫描电镜分析还发现,阳离子聚丙烯酰胺在甲苯和石脑油萃取体系中均有夹带减小细砂的功效。
The extraction experiments of Canadian hydrophilic oil sands were carried out using toluene, n-heptane, petroleum ether and naphtha, supplemented with cationic polyacrylamide and ionic liquids and other additives. The recoveries of asphalt, sand entrained in asphalt and Residual sand morphology of the asphalt separation angle of 3 were analyzed and evaluated, and ultimately that the cationic polypropylene aid naphtha extraction of oil sand bitumen is an economically viable process route. The article then proceeded with the optimization of the process parameters from the perspectives of the concentration of auxiliaries, the storage time of the additives, the proportions of the additives and the oil and sand, the proportions of the solvent and the oil and sand. The results show that the recovery of pitch increases from 72.29% to 78.29% at room temperature when the ratio of naphtha: 0.05% CPAM aqueous solution: oil sand is 3: 2: 1. In addition, IR analysis of asphalt and SEM analysis of residual sand also found that cationic polyacrylamide entrained in toluene and naphtha extraction system to reduce the effect of fine sand.