Technology Unit

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Fractionator
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ENI EST
Short Name
Fractionator
Description

After the Reaction, the Products are separated by a Fractionator.

The residual unconverted Heavy Fraction at the Bottom of the Vacuum Distillation Column, containing all of the Catalyst, is recycled back to the Reactor, and only a small part of the Heavy Fraction is purged (1–3 wt% of the Fresh Feed) to avoid the Accumulation of Coke Precursors and of Ni and V Sulfides from the Organometallic Compounds contained in the Feedstock. With the Purge, a limited amount of MoS2 is also removed; therefore, an equivalent amount is fed continuously to the Reactor to keep its concentration constant at a few thousand ppmw. The Purge can be used as a Fuel in the Cement or Steel industries.

Source: G. Bellussi et al., Hydroconversion of heavy residues in slurry reactors: Developments and perspectives, J. Catal. (2013),

Link
http://dx.doi.org/10.1016/j.jcat.2013.07.002
System Info

Updated by
UserPic  Kokel, Nicolas
Updated
2/23/2023 6:11 PM
Added
11/21/2022 5:35 PM
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https://www.eni.com/assets/documents/eng/company/brochure/2014/eni_EST_esecutivo.pdf ENI EST Simplified Process Flow Diagram