GT-StyreneŽ

GT-StyreneŽ is our extractive distillation process that directly recovers styrene from the raw pyrolysis gasoline derived from the steam cracking of naphtha, gas oils, and natural gas liquids (NGL).  The styrene is produced at high purities, suitable for polymerization, at a very attractive cost compared to conventional styrene production routes.  If desired, the mixed xylenes can also be extracted from the pygas, upgrading their value as a chemical feedstock.  The process is economically attractive for steam cracker operators which produce greater than 500 KMTA ethylene from liquids feedstock. 

Advantages

• Produces polymer-grade styrene at 99.9% purity
• Allows the recovery of isomer-quality mixed xylenes for paraxylene production
• Debottlenecks pygas hydrotreater and extends cycle length
• Reduces hydrogen consumed in hydrotreating
• Optimized solvent system and design provide economical operating costs