RETARDATION EFFECT OF BASIC NITROGEN COMPOUNDS IN SHALE OIL ON CATALYTIC CRACKING AND THEIR STRUCTURE CHARACTERIZATION

Abstract

Abstract:

The basic nitrogen compounds in shale oil were separated using HCl solutions with different concentrations, and the structures of separated compounds were characterized by ESI FT-ICR MS technique. The retardation effect of the separated basic nitrogen compounds and model nitrogen compound added into the separated compounds on shale oil catalytic cracking was studied. The results showed that the basic nitrogen compounds were mainly pyridine and naphthenic pyridine with alkyl side chains. The higher the concentration of HCl solution, the more types of basic nitrogen it extracted. Removing the basic nitrogen compounds could improve the catalytic cracking performance of shale oil. Besides the content of basic nitrogen compound, the types of basic nitrogen compounds also influence the catalytic cracking of shale oil. The basic nitrogen compounds with larger molecular weight and higher condensation degree have much more significant retardation effect on shale oil catalytic cracking.

Key words: shale oil, catalytic cracking, basic nitrogen compound, structure characterization

References

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