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DuraZOOM™ - industry-leading olefin and octane enhancement

DuraZOOM additive is the latest in a long line of light olefins and octane enhancers manufactured by Ketjen. ZSM-5 additives were developed by Mobil Oil Corporation and first used in 1983 as octane enhancers necessitated by the phasing out of tetraethyl lead. Since then, their use has grown enormously worldwide. The initial applications required relatively low levels of ZSM-5 crystal. More recently, the use of ZSM-5 additives has shifted from octane enhancement to propylene generation. This has dictated the need for a much higher crystal content in the additive without degradation in the physical properties, particularly particle strength.

Today, the market for these additives is driven by refiners using the FCC unit to make large amounts of propylene for petrochemicals and plastics. Not only has the concentration of ZSM-5 crystal in olefin/octane additives increased, but the additive concentration in the inventory is also an order of magnitude higher. Currently, refiners regularly use up to 25–30% additive in their inventories.

Maximized propylene and light olefins yields coupled with concerns about weak additive particles exiting the FCC unit and damaging downstream power recovery equipment have led refiners to opt for DuraZOOM.

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