Technology Unit

The yield and quality of DAO depend not only on the Feed Composition and the choice of Solvent and operating conditions, but also on the Extraction System
Design.

The key parameters for extractor design are:

• Solvent-to-Feed ratio and Solvent distribution with Feed and Extractor Bottom
• Extractor sizing
• Feed and Solvent Distributors
• Extractor temperature profile
• Structured Packing Package.

By using countercurrent flow, establishment of a temperature gradient and the use of dedicated Packing, the Solvahl™ Process takes advantage of its outstanding Extractor Design, combining excellent Extraction Selectivity at high throughput and low Solvent/Feed ratios.