For highly fouling services restrict the reboiler heat flux. A typical reboiler might haveas much as 30% vaporization and high heat fluxes. Reducing the percent vaporization andusing a lower heating medium will reduce fouling potential. The hydrocarbon residencetime will affect the fouling rate. Design columns to have lower residence times in foulingservices. At lower charge rates residence time is increased, minimize low charge rateswhen possible.
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