Mineralogy and Surface Chemistry of Alberta Oil Sands: Relevance to Nonaqueous Solvent Bitumen Extraction

被引:9
|
作者
Osacky, Marek [1 ,2 ]
Geramian, Mirjavad [1 ]
Uhlik, Peter [2 ]
Caplovicova, Maria [2 ,3 ]
Dankova, Zuzana [4 ]
Palkova, Helena [5 ]
Vitkova, Martina [6 ]
Kovacova, Milota [4 ]
Ivey, Douglas G. [1 ]
Liu, Qi [1 ]
Etsell, Thomas H. [1 ]
机构
[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
[2] Comenius Univ, Dept Econ Geol, Ilkovicova 6, Bratislava 84215, Slovakia
[3] Slovak Univ Technol Bratislava, STU Ctr Nanodiagnost, Vazovova 5, Bratislava 81243, Slovakia
[4] Slovak Acad Sci, Inst Geotech, Watsonova 45, Kosice 04001, Slovakia
[5] Slovak Acad Sci, Inst Inorgan Chem, Dubravska Cesta 9, Bratislava 84536, Slovakia
[6] Czech Univ Life Sci Prague, Fac Environm Sci, Dept Environm Geosci, Kamycka 129, Prague 16521 6, Czech Republic
关键词
PETROLOGIC END-MEMBERS; CRETACEOUS MCMURRAY FORMATION; PROCESS WATER CHEMISTRY; CLAY-MINERALS; CHEMICAL-COMPOSITION; ILLITE-SMECTITE; CRUDE-OIL; ATHABASCA; MONTMORILLONITE; ASPHALTENES;
D O I
10.1021/acs.energyfuels.7b00855
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The mineralogy, chemistry, surface properties, and pore structure characteristics of the four different petrologic types of Alberta oil sands were determined in order to better understand their impact on nonaqueous solvent bitumen extraction. Quartz, clay minerals, and carbonates were the main mineral constituents of the studied samples. With increasing weight percentage of clay minerals, the solvent bitumen extraction (by the Dean Stark procedure using toluene) decreased. Fine grained illite and illite-smectite had more detrimental effect on solvent bitumen extraction than coarse grained kaolinite. The pore structure data revealed that the extractability of bitumen from the oil sands depends on accessibility, more specifically on the size of bitumen-filled pores, by the solvent. The relative abundance and size of pores in the oil sands were controlled by mineral composition and particle size. Fine size fractions were typically enriched in kaolinite and 2:1 clay minerals (illite and illite-smectite) and contained small pores, with diameters of 400 and 40 nm, respectively. Coarse size fractions were usually rich in quartz and contained large pores with diameters greater than 200 nm. The efficiency of nonaqueous bitumen extraction was significantly higher for coarse grained, quartz-rich oil sands in which the organic matter was distributed mainly at a scale of greater than 200 nm compared with fine grained, clay-rich oil sands where organic matter occurred as meso-macropore filling material within clay mineral aggregates. Overall, the finest (<0.2 mu m) fraction of oil sands composed mainly of illite and illite-smectite had the most detrimental effect on solvent bitumen extraction. This was related to the contrasting properties of the finest fraction (mainly high specific surface area, high cation exchange capacity, and the presence of small-sized pores) compared with the other studied fractions of oil sands.
引用
收藏
页码:8910 / 8924
页数:15
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