Technology

Process Summary

ROSE^® stands for Residual Oil Supercritical Extraction. In the ROSE^® process, a paraffinic solvent (typically propane) in supercritical mixture is used to extract de-asphalted oil ("DAO"). The products obtained in the extraction of residuum are asphaltene, resin and de-asphalted oil. The deasphalted oils are excellent feedstocks for fluid catalytic crackers and hydrocrackers. 

Process Description

ROSE technology is based on the use of a light, readily available hydrocarbon solvent to extract deasphalted oil from a feedstock containing asphaltenes in the extractor. Solvent selection is based on the desired deasphalted oil purity and yield for a given feedstock.

The solvent is separated from the DAO in the downstream DAO separator under supercritical conditions, then recovered and recycled through heat exchangers back to the asphaltene separator.

The ROSE unit is simple, mostly carbon steel and includes a deasphalted oil stripper and an asphaltene stripper for final recovery and recycling of dissolved solvent from the two effluent streams.

Figure 1 - ROSE Process Flow Diagram^[2]

ROSE units can upgrade very heavy crudes, process residue from oil sand bitumen, and extract valuable products from thermally or catalytically cracked material.

References

1. Mihail Editoiu, 16th Nov 2022, Deasphalting Unit - ROSE, Youtube.
2. Jaimin Pandya, LJIET Chemical Engineering Department, ROSE Process, Youtube.
3. KBR, Jul 2019, ROSE^® Residuum Oil Supercritical Extraction.