Where is H-Oil Process used?

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H-Oil Process

The H-Oil® process uses ebullated-bed hydrocracking technology to process heavy feedstock residues such as vacuum gasoils (VGO), deasphalted oils (DAO), Coal derived oils, Atmospheric and Vacuum Residue with high metals, CCR, sulfur, nitrogen, asphaltenes and solid contents that can cause rapid catalyst fouling and contamination. The goal is to destruct residue and maximize the production of middle-distillates.

The ebullated-bed reactor system overcomes problems encountered with fixed-bed reactors when processing difficult feedstocks or when high processing severity is required. The bed of catalyst is fluidized (ebullated) by the lift of hydrogen, feed oil and recycled reactor liquid. 

A fresh catalyst is continuously added and the spent catalyst withdrawn to control the level of catalyst activity in the reactor, enabling constant yields and product quality over time. There is no run-length constraint as the catalyst is added on-line.

Where conventional fixed-bed residue hydrotreaters are limited to catalyst cycle lengths, the H-Oil® process can achieve the two- to four-year turnaround cycles to match that of the FCC unit and requires only one or two reactors. 

Alternatively, operating conditions can be varied to achieve a range of conversion and product quality to meet seasonal demands or changes in the crude slate. 

The continuous development of this technology over the past 50 years, with one of the first unit started up in 1968, offers several advantages: 

> Conversion ranging from 50 to 85% depending on the feedstock
> Improvement of the technology: much higher reliability and increased unit availability (above 96% based on four H-Oil® reference units)
> Optimization of the process scheme: integration of inter-stage separator between reactors in series and the application of catalyst cascading for higher performance and lower operating costs.
>Development of dedicated catalyst: high conversion, low sediment ebullated bed catalyst tailored to handle the ebullition and provide high performances
>Higher stability: Understanding and control of phenomena occurring at high conversion

The H-Oil® ebullated bed conversion technology is commercially proven with the experience of twelve commercially operating ebullated-bed reactor units. 
Through this industrial experience, the process has been improved and is today a reference when a high level of conversion of the atmospheric and vacuum residue fraction is required. 


Related Product
H-oil® Suite - Solution for residue upgrading


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H-Oil Process - Commercial Bulletin cadenas

PTQ - Flexible upgrading of heavy feedstocks

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