New opportunities for residue processing in refineries with SDA PLUS by EDL

EDL Anlagenbau Gesellschaft mbH (EDL), the technology provider and engineering company located in Leipzig, Germany, offers an efficient solvent deasphalting technology to process heavy refinery residues: SDA PLUS. With SDA PLUS yields can significantly be increased in existing plants and OPEX reduced by up to 25% as against conventional technologies.

To optimize the economic output and to meet more stringent environmental regulations, such as the IMO 2020 regulations, 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.

With SDA PLUS (SDA - Solvent Deasphalting) EDL offers an innovative concept which is not only important for resource utilization, but also from the economic point of view. It is one of the most interesting bottom-of-the-barrel technologies to process heavy residues in refineries. Compared to other residue processing technologies such as hydrocracking, coking, visbreaking or gasification, SDA PLUS captivates by its low investment costs.

Aside from that, optimal product qualities are achieved at 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, operational costs can be reduced by up to 25% compared to conventional SDA technologies.

With SDA PLUS resins and asphaltenes are removed as so-called pitch from refinery residues in a special extraction column. The resulting deasphalted oil (DAO) is processed in further process stages to base oils, special oils and waxes, e.g. with the extraction, dewaxing and deoiling technologies of EDL, or used for fuel production.

MARCH/APRIL 2019 sda plus edl technology

Plants and has been operating its own pilot plant for solvent deasphalting since 2012. This pilot plant has significantly been enhanced quite recently so that the complete range of solvents from propane to hexane and their mixtures can now be tested.

In order 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. 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), asphaltenes and resins.

EDL’s expanded SDA pilot plant in Leipzig / Germany

Another advantage of this technology is its flexibility based on which a wide range of pitch qualities - to be used as solid fuel or to produce bitumen by blending or by Pörner Biturox® technology - can be generated.

Beside the production of DAO the two-stage SDA PLUS process additionally allows to produce resins for a variety of applications.

SDA PLUS is available with both subcritical and supercritical solvent recovery, optimized for every particular case of operation.

Safe basis for that certain PLUS EDL has gained extensive experience in the construction of new and the revamp of existing Solvent Deasphalting (SDA)

Combined with specific analytical methods, such as SARA and the proprietary process simulation software for SDA PLUS developed by EDL the tests provide the basis for the thermodynamic and hydraulic design of the SDA PLUS extraction column and the entire process plant.

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 liter). Thus, a sound basis for an SDA plant ‘with that certain PLUS’ is created in a short time and very economically.

For more information please contact:

Enquiry No. 35


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