BenzOUT™ for benzene reduction in gasoline

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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.

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 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

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

 

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