Effect of prehydrogenation on hydroconversion of Maya residuum; Part II: Hydrogen incorporation
- Chevron Research Co., Richmond, CA (USA)
Maya 650{sup 0}F residuum (Maya AR) was prehydrogenated over a standard hydroprocessing catalyst. The 650{sup 0}F residuum of this product (HMaya AR) and Maya AR were then separately hydroprocessed further at selected conditions. The products were examined by elemental, {sup 1}H and {sup 13}C NMR analyses to determine the how hydrogen was incorporated during processing. For all processing steps, hydrogen was incorporated in capping fragments formed during cracking reactions, as well as in hydrogenation reactions, heteroatom removal, and hydrocarbon gas formation, but the distribution of the hydrogen was dependent upon the type and severity of the process. For the direct hydroconversion of Maya AR, 25 to 30% of the total hydrogen was incorporated for heteroatom removal and hydrocarbon gas formation. The remaining hydrogen was incorporated in hydrogenation and cracking reactions. The hydrogen incorporation during each specific processing step is discussed, along with an evaluation of the prehydrogenation step as a residuum conversion process option. These results are compared to previously reported hydrogen incorporation measurements on other feeds and processing methods.
- OSTI ID:
- 7015265
- Journal Information:
- Fuel Science and Technology International; (USA), Vol. 8:3; ISSN 0884-3759
- Country of Publication:
- United States
- Language:
- English
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Effect of prehydrogenation on hydroconversion of Maya residuum, part II
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02 PETROLEUM
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CARBON 13
COAL GASIFICATION
HYDROCARBONS
HYDROGEN
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CARBON ISOTOPES
CHEMICAL REACTIONS
CRACKING
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ELEMENTS
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FOSSIL FUELS
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