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Olgone high-performance aromatics treatment

The heart of the Olgonesm services process is a high-performance, highly stable catalyst. Olgone technology services and process is designed to significantly extend the cycle length of existing clay treaters, which will reduce the amount of spent clay that is generated.

The performance provided by the Olgone process can lead to significant operating cost savings as well as provide debottleneck opportunities. As part of an Olgone services license, ExxonMobil provides full support for licensees from initial consultation through technology transfer and ongoing improvements.

Olgone advantages

Long operating cycles and reduced solid waste

Unlike traditional clay treating processes, the Olgone services process uses a proprietary catalyst to achieve typical cycle lengths 4 to 6 times that of clay. This means reduced generation of spent clay. Olgone services technology reduced clay waste in an ExxonMobil facility by 85% per year.

Photo — The Olgone aromatics treatment process can extend the cycle life of existing clay treaters.

Capital savings: retrofit or grassroots

The long operating cycles of the Olgone process can translate into savings, as fewer treater change-outs bring lower clay costs. In some cases, Olgone's longer cycle length can allow a producer limited by clay treatment capacity to avoid installing additional clay treaters altogether. In grassroots applications, treater vessels can be smaller for reduced capital costs. Other benefits include:

  • Better downstream protection: Longer cycles reduce the risk of exceeding downstream unit Bromine Index specifications and the potential for resultant damage to sensitive catalysts and molecular sieves.
  • Safety: Olgone reduces the frequency of treater loading and unloading by virtue of its long operating cycles. Clay removal and replacement are labor-intensive and can expose operators to safety and environmental risks. Olgone technology typically reduces change-outs and their associated risks by 75-85%.

Simple fixed-bed process

The process flow (below) shows where the Olgone process would be applied in a typical aromatics plant. The process, like clay treating, generates some heavy materials that must be removed via fractionation. As a result, it is installed upstream of fractionation so that these by-products can be removed from the process.