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Ethylene assets mapping and mass balance at ExxonMobil's Baytown facility

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Baytown Complex
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Kokel, Nicolas
10/7/2025 8:36 PM



Aerial BOP-2X view showing BOP-2X 8 furnaces and 9th furnace to be started up within two year | Credit: ESI via Linkedin

Baytown complex is hosting three steam cracker plants based on KBR/Exxonmobil technology:

  • BOP: 1979 startup - capacity 1,180,000 t/y of ethylene 
  • BOP-X: first extension, 1997 startup - capacity 920,000 t/y of ethylene 
  • BOP-2X: second extension, 2018 startup -  capacity 1,500,000 t/y of ethylene

The ethylene is fed to multiple conversion plants, among others HDPE and performance elastomers. Facility mass balance generation is in progress.



#exxonmobil  #baytown  #texas  #ethyleneplants  #baytownolefinplant  #bop  #kbr  #score  #massbalance ​