September 2011

Special Report: Refining Developments

Consider new processes for clean gasoline and olefins production

Advanced technologies promote propylene yield while reducing olefins in gasoline

Dharia, D., Stone & Webster Inc., A Shaw Goup Co.; Long, J., Xu, Y., Zhang, J., SINOPEC Research Institute of Petroleum Processing; Batachari, A., Yuan, E., Gim, S., Xu, S., Shaw Energy & Chemicals Group

Refiners must meet increasingly stringent specifications for cleaner gasoline, as shown in the gasoline standards defined by the Worldwide Fuel Charter (WWFC), a global agreement between the major motor manufacturers in the US, Europe and Japan.1 Fig. 1 shows the trend of WWFC standards toward progressive reductions of sulfur, olefins, benzene and aromatics. The high level WWFC categories of gasoline have been or soon will be, adopted by the gasoline standards of the US, Europe and many other countries.   Fig. 1. Progressive reductions of sulfur,   olefins, benzene and aromatics in gasoline. For the gasoline components with similar molecule weights, isoparaffi

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