Current status and prospects of demetallization of heavy petroleum feedstock (Review)

  • Magomedov R
  • Popova A
  • Maryutina T
 et al. 
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Abstract

Comparative assessment of the prospects of development of heavy
petroleum feedstock (HPF) upgrading technologies in terms of the
possibility of removal and recovery of metals contained in the feedstock
is presented. It has been shown that HPF demetallization with different
efficiencies can be achieved as a result of destructive thermal
conversion of the feedstock and nondestructive mass transfer processes.
Solvent deasphalting is characterized by simplicity of engineering
design and operating flexibility and makes it possible to remove both
asphaltenes and metals, whose deposition leads to irreversible
deactivation of oil refining catalysts. Promising lines in
demetallization by destructive feedstock conversion are associated with
processes that provide the highest degree of HPF conversion and the
lowest yield of the unconverted residue, in which the feedstock metals
are concentrated. In this regard, the development and implementation of
petroleum residue upgrading technologies based on the slurry
hydrocracking, fluid coking or flexicoking, and supercritical fluid
extraction processes creates real prerequisites for the organization of
high-conversion comprehensive processing of heavy oils with the
isolation of a metal concentrate.

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Authors

  • R. N. Magomedov

  • A. Z. Popova

  • T. A. Maryutina

  • Kh. M. Kadiev

  • S. N. Khadzhiev

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