Mogas production

Mogas production (BenzOUT™)  

Learn about BenzOUT™ technology for benzene reduction in gasoline, available for license from ExxonMobil.

The BenzOUT process is a commercially proven technology for benzene reduction in gasoline. BenzOUT converts benzene, typically in a light reformate stream, to higher alkylaromatic blending components by reacting a benzene rich stream with light olefins, such as a refinery grade propylene stream.

BenzOUT technology avoids octane loss with no hydrogen consumption associated with beneze saturation alternatives by alkylating propylene to the aromatic rich stream. BenzOUT can be a grassroots unit or retrofitted into an existing facility, such as a polygas unit. The technology was developed by ExxonMobil and is available for licensing through Badger Licensing LLC to provide a unique process advantage to help refiners meet benzene regulations, while at the same time achieving an attractive economic return on their investment.

Key benefits

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    • Low temperature pressure liquid phase process
    • No hydrogen consumption
    • Simple, fixed bed reactor

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    • Deep conversion of reformate stream benzene
    • Gasoline volume swell

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    • Octane increase in the full reformate

BenzOUT technology process configuration  

  • Fixed bed catalyst technology. The process uses a fixed bed liquid-phase reactor resulting in low utility requirements.
  • Catalyst. The process utilizes an ExxonMobil proprietary zeolite catalyst.
  • Stabilization. Propane fed to the unit with propylene is removed from the BenzOUT product in a product stabilizer. This can produce a propane product of HD-5 quality. The product from the BenzOUT technology is a light reformate with a reduced RVP.

BenzOUT technology advantages and economical benefits  

  • Conversion of 95%+ of the benzene in a reformate stream: highly selective and stable catalyst enabling the process to run at a very high benzene conversion to meet EPA Mobile Source Air Toxics (MSAT) regulations
  • Low temperature liquid phase process
  • Octane increase: 2-3 numbers of (research octane number + motor octane number)/2 gain in a full reformate, depending on the feed composition
  • No hydrogen consumption: refineries could feed all the C8 components (low blending octane values) to the reformer unit to achieve increased hydrogen production and octane gain
  • Gasoline volume swell: upgrading of light olefins and benzene into high-octane alkylaromatic blendstock would also result in a volume swell of the gasoline pool

BenzOUT™ process  

BenzOUT services include:  

  • Initial consultations
  • Development of licensing proposal
  • Basic engineering package, including basic design specification and operating guide
  • Engineering support during FEED and EPC stages
  • Technology transfer, training, catalyst loading and startup support

Featured resources

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  • ExxonMobil Chemical play button icon

    Introduction to ExxonMobil Catalysts and Technology Licensing

    See an overview of ExxonMobil's refining, chemical manufacturing and gas processing technologies along with their assortment of specialty catalysts. These technologies and catalysts are used at ExxonMobil's own facilities and are offered for license to customers.

    Watch the video
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