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22-01-2019

EDL’s innovative pilot plant opens up new opportunities to process refinery residues

EDL Anlagenbau Gesellschaft mbH (EDL), the technology provider and engineering company located in Leipzig, Germany, offers an innovative pilot plant in connection with its extraction technology SDA PLUS. At this pilot plant all heavy refinery residues can be tested using the complete range of solvents.

EDL has gained extensive experience in the construction of new and the revamp of existing Solvent Deasphalting (SDA) Plants and has been operating its own pilot plant for solvent deasphalting since 2012. This pilot plant has now been crucially enhanced so that the complete range of solvents can be used – from propane to hexane – as basis for EDL’s extraction technology SDA PLUS.

With the SDA PLUS technology high-value products can be generated from heavy refinery residues (vacuum, visbreaker, hydrocracker residues, heavy used oils, FCC residues (heavy recycle oil), bunker oils) by means of solvent extraction.

Due to more stringent environmental regulations, such as the IMO regulations to limit emissions for ships, and the trend towards processing of heavy residues, refiners are permanently looking for new opportunities to process their heavy residues as fully as possible. Therefore, increasingly new solutions for deeper residue processing based on solvent extraction enter the limelight.

Compared to conventional SDA processes SDA PLUS offers crucial advantages: optimal product qualities are achieved with high process efficiency based on most advanced column internals. With SDA PLUS existing SDA plants can be optimized and yields can be increased up to 10 %. Moreover, with SDA PLUS the operating costs can be reduced by up to 25 % compared to conventional technologies.

Safe basis for that certain PLUS
In order to be able to respond more flexibly to market requirements and develop economically and ecologically sound solutions for residue processing for refinery customers, the existing test facility has now been expanded and optimized. As a result, EDL’s customers have access to a state-of-the-art SDA PLUS pilot plant which can test all heavy refinery residues with the complete range of solvents (from propane to hexane) as well as solvent mixtures. In addition, special process applications can be designed with the new pilot plant, such as a two-stage SDA PLUS process that can be used to make deasphalted oil (DAO) and asphaltenes as well as resins.

In combination with specific analytical methods, such as SARA and the proprietary process simulation software for SDA PLUS developed by EDL the pilot plant lays the foundation for the thermodynamic and hydraulic design of the SDA PLUS extraction column and the entire process plant.

In addition to SDA PLUS, EDL also licenses other processes for the production of base oils, tender oils, waxes and other high-quality specialty products such as EXTRACTION, DEWAXING / DEOILING, MICRONIZATION or AROMEX.

The innovative concept of the pilot plant allows to define all required SDA PLUS process parameters quickly, reliably and, above all, tailor-made to the customer’s product requirements with even small quantities (about one litre). This creates a safe basis for a highly productive plant ‘with that certain PLUS’ in a short time and very economically.
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