CLG's ISODEWAXING technology revolutionized catalytic dewaxing when it was commercialized in 1993. Rather than removing the wax, as does solvent dewaxing, ISODEWAXING catalytically isomerizes the molecular structure of the wax into isoparaffins. These isoparaffins have high VI, low pour points and excellent resistance to oxidation. Further, because ISODEWAXING preserves the base oil's paraffinicity, it can produce higher product VI and/or higher yields than other dewaxing processes.

When using ISODEWAXING, a broader range of feeds can be processed into a broader range of products. ISODEWAXING can process feeds with close to 100% wax, such as slack wax and hard wax. It is a once-through process where 140 VI base oils can be made from slack wax without recycling unconverted wax. Refiners using ISODEWAXING can produce base oils with VI ranging from 95 to 140 and higher. Pour points may range from low (-9 to -15°C) to ultra-low (< -40°C).

  Hydrocracker feed rate Hydrocracker waxy base oil yield Dewaxer feed rate Dewaxer yield % Base oil yields BPD
Catalytic dewaxing BPD 10,000 52 BPD 5200 81 4200
Solvent dewaxing BPD 10,000 63 BPD 6300 84 5300
ISODEWAXING BPD 10,000 75 BPD 7500 94 7050
Using all-new ISODEWAXING Catalyst to make conventional base oils allows the refiner to lower processing severity in the hydrocracker and substantially increase yields.

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Study published in Lube Oil Technical Journal

English Abstract
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CLG white paper with pilot plant data all-new ISODEWAXING® Catalyst

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