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KBR (Kellogg Brown & Root)


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ROSEŽ (Residuum Oil Supercritical Extraction)
Process Technology Licensing


The ROSEŽ (Residuum Oil Supercritical Extraction) process is a very efficient solvent-extraction option for recovering higher value products from resids. ROSEŽ units yield deasphalted oils that are excellent feedstocks for fluid catalytic crackers and hydrocrackers, as well as recover resins and asphaltenes that have a variety of uses. State-of-the-art technology, coupled with extensive experience in the engineering and construction of ROSEŽ units, puts KBR, a worldwide technology licensor of the process, at the forefront of resid processing by super critical solvent extraction. ROSEŽ technology is based on the use of a light, readily available paraffinic solvent to extract deasphalted oil from a feedstock rich in asphaltenes. The solvent is separated from the deasphalted oil in the downstream deasphalted oil separator, then recovered and recycled. Solvent selection is based on the desired deasphalted oil purity and yield for a given feedstock. The ROSE unit includes a deasphalted oil stripper and an asphaltene stripper for final recovery and recycling of dissolved solvent from the two effluent streams.
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