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Xtend™ by XRG Technologies

The unique design of Xtend™ causes the flow to swirl inside the tube, increasing the amount of heat transferred. This generates more swirl with less pressure drop compared to a conventional twisted tape. The swirling flow: Cools the film on the tube wall Removes coke precursors from the film Increases temperature and product uniformity in the tube Xtend™ only needs to be installed in tubes that limit run length due to hot spots; this minimizes pressure drop while maximizing run length and cost savings. Xtend™ is removable. The unique design is sized so that it flexes with build-up and does not engage with coke layer. In coker unit simulations, Xtend™ reduces the tube wall temperature by as much as 33 °F. Lower film temperature and increased bulk flow uniformity result in up to 3x less coking in tubes equipped with Xtend™. Simulations show similar benefits for other services including crude, vacuum, and pyrolysis heaters. If one of these units causes a bottleneck, fixing a few problematic tubes could save millions.

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