Eluxyl incorporates a number of innovations from recent technological advances, that have all been validated in the world’s largest operating single-train paraxylene separation unit, affirming its leading edge position.
High performance adsorbent is the key to reach ultimate PX purity and high recovery rates. The adsorption capability is combined with adequate mechanical strength, which allows use of the Catapactm dense loading device: even bed density is perfectly achieved, even on large adsorbers diameters. are another key feature of Eluxyl technology. Targeting ultra-large single-train capacities requires even distribution of feeds and withdrawal of products in large diameter adsorbers. Blending efficiency, and injection synchronicity issues are properly addressed and industrially proven. clearly distinguishes this technology, bringing a high degree of flexibility and a continuously optimized operation. of an individual valve during unit operation is achievable owing to the ability of the microprocessor to automatically detect valve malfunction. Maintenance is performed by plant maintenance personnel with lower incurred costs, while maintaining unit performance.
Efficient distribution/withdrawal trays
The PLC controlled on/off valves system
On-stream maintenance
On-line Raman spectroscopic analysis is applied to visualize concentration profiles along the Eluxyl adsorber on a real time basis. This powerful technique allows a fine and continuous supervision of the adsorption section.
Eight Eluxyl licenses have been awarded so far, for a total PX production capacity of over 2.9 Mt/y and corresponding to 30% PX capacity share since this technology was brought to the market. The production capacities range from 180 to 750 kt/y.
Today , the world’s largest single train capacity is based on Eluxyl technology and serves the market with 650 kt/y of 99.9% PX purity.
process achieves the separation of high purity paraxylene from a mixture of C8 aromatics based on the concept of simulated countercurrent adsorption.
