June 2020

Special Focus: Process Optimization

Intensification of sulfur processing units by oxygen enrichment and process flowsheet optimization

The consistent global trend toward improvements in air quality and tighter regulations on emissions, as well as the International Maritime Organization’s shipping regulations, continue to mitigate sulfur levels—not only in conventional transport fuels (petrol and diesel), but also in jet fuels, fuel oils and other heavier distillates.

Yang, W., Hyundai Oilbank Co. Ltd.; Lewis, J., Racz, A., Advisian, a Worley Company

The consistent global trend toward improvements in air quality and tighter regulations on emissions, as well as the International Maritime Organization’s shipping regulations, continue to mitigate sulfur levels—not only in conventional transport fuels (petrol and diesel), but also in jet fuels, fuel oils and other heavier distillates. To adhere to these requirements, Hyundai Oilbank decided to increase its crude oil and heavier distillate processing capacities, which resulted in a significantly higher sulfur processing requirement that cannot be fulfilled by the existing sulfur recovery plants. The refinery contains two identical sulfur recovery unit (SRU) plants, each with an amine regenera

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