Catalytic cracking of Asphalt Ridge bitumen

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Title Catalytic cracking of Asphalt Ridge bitumen
Date 1979
Description Theoretical considerations of the molecular structure of Uinta Basin, Utah tar sand bitumen, viz. high-molecularweight naphthenic hydrocarbons, suggest potential for direct catalytic cracking of these materials. Preliminary results show that virgin bitumen is responsive to catalytic cracking but that the efficiency of an 82 A pore diameter catalyst is low owing to either exclusion of molecules or adsorption of nonvolatil molecules at the catalyst pore mouth, or both. Typical yields at 460°-500° C and 2:1 cat-to-oil ratio are 7 wt % gas, 80 wt % liquids, and 13 wt % coke. Liquid products typically are comprised of 66% saturated hydrocarbons and 34% aromatic and polar molecules. The gasolines produced exhibit low octane numbers resulting from competing thermal reactions under the conditions studied. An increase in cat-to-oil ratio results in a dramatic increase in gasoline yield and a significant increase in coke yield at the expense of medium and low volatility liquids. Catalytic activity improves notably when visbroken, deasphalted, or hydropyrolyzed bitumen is used as the feedstock. For the latter case, in which 2.6 wt % hydrogen is added during hydropyrolysis, yields are 30% gases, 64% liquids, and 6% coke, based on the virgin bitumen.
Type Text
Publisher American Chemical Society
Subject Uinta Basin; Utah; Tar sand; Bitumen; Asphalt Ridge; Catalytic cracking; Virgin bitumen; Gasoline; Coke yield; Visbroken; Deasphalted; Hydropyrolized bitumen; Feedstock; Hydropyrolysis
Language eng
Bibliographic Citation Bunger, J. W., Cogswell, D. E., & Oblad, A. G. (1979). Catalytic cracking of Asphalt Ridge bitumen. Gorbaty, M. L., & Harney, B. M. (Eds). Refining of synthetic crudes: Advances in Chemistry Series, 179, 67-84.
Rights Management (c)Division of Petroleum Chemistry, Inc., American Chemical Society
Identifier ir-eua/id/2865
Source DSpace at ICSE
ARK ark:/87278/s6rv3mt9
Setname ir_icse
Date Created 2013-05-09
Date Modified 2015-05-22
ID 213983
Reference URL
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