Hexene Handling and Delivery

• Hexene is the only product transferred into a pipeline system for customers.
• Hexene requires specific handling for shipping and delivery to maintain product quality.
• Delivery is only made from approved and stilled tanks, specifically TK-36 and TK-37.
• TK-36 and TK-37 remain isolated from Unit 1796, the Hexene Meter, and truck loading during production or transfers.
• TK-36 or TK-37 can be used as rundown tanks for T-411 hexene production.
• Daily samples from the current rundown tank (TK-36 or TK-37) are sent to the lab for quality approval.
• Continuous hexene product supply for sales is crucial to avoid production loss and process upsets.
• Maintaining approved inventory ensures product availability for sales.
• TK-36 and TK-37 receive hexene from P-412A/B.
• Hexene from P-412A/B can go directly to truck loading via P-40.
• P-807 moves hexene from TK-37 to truck loading.
• P-761A routes hexene to Unit 1796.
• P-138 sends hexene to the Hexene Meter.
• P-761B is a spare pump for P-761A and P-138.
• TK-36 has an internal mixer Z-60.
• TK-37 has an internal mixer Z-61.
• Tanks are maintained under a nitrogen blanket to prevent moisture or oxygen contamination.
• Safety valve outlets for PSVs 12901, 12902, 12903, 12904, and 9900 go to D-53.
• D-53 bottoms are aligned to the suction manifold for P-138, P-807, P-761A, or P-761B when level accumulates.

Equipment Details

• TK-36 (C6 Product Storage): An approved and stilled tank (48’D x 48’L) with a cone roof, mixer, and foam maker nozzle.
  • It stores C6 product, which enters and exits at the bottom.
• Z-60 (TK-36 Agitator): Internal mixer in TK-36.
  • Prevents settling/layering of sludge and maintains a homogenous blend.
  • Driven by a 5HP 1715 RPM induction electric motor.
• TK-37 (C6 Product Storage): An approved and stilled tank (48’D x 48’L) with a cone roof, mixer, and foam maker nozzle.
  • Stores C6 product, which enters and exits at the bottom.
• Z-61 (TK-37 Agitator): Internal mixer in TK-37.
  • Prevents settling/layering of sludge and maintains a homogenous blend.
  • Driven by a 5HP 1715 RPM induction electric motor.
• P-40 (C6 Transfer Pump): Single-stage centrifugal pump.
  • Driven by a 20 HP 3850 RPM horizontally-mounted induction electric motor.
  • Routes hexene from P-412A/B, TK-36, or TK-37 to truck loading.
• P-807 (Hexene Loading Pump): Single-stage centrifugal pump.
  • Routes hexene from TK-37 to truck loading.
• P-761A (PEU-1796 Hexene Pump): Single-stage centrifugal pump.
  • Driven by a 30 HP horizontally-mounted induction electric motor.
  • Routes hexene from TK-36 to Unit 1796.
• P-138 (C6 Transfer Pump): Single-stage centrifugal pump.
  • Routes hexene to the Hexene Meter.
• P-761B (P-761A/P-138 Spare): Single-stage centrifugal pump.
  • Driven by a 30 HP horizontally-mounted induction electric motor.
  • Routes hexene from TK-36 to Unit 1796, serving as a spare for P-761A and P-138.
• D-53 (N2 KO Drum): Recovery drum (6’6”D x 8’6”L).
  • Recovers hexene from the safety valve outlets of PSVs 12901, 12902, 12903, 12904, and 9900.