Polyethylene Unit Low Pressure Accumulator

One of our clients asked us to design the demister in one of their polyethylene unit’s Low Pressure Accumulator. The vessel was of a vertical vessel configuration with a column ID of 1300mm and Tan-Tan length of 4424mm.

Following were the process data that was provided by the customer

V-3502 Unit Normal Case(Gas) Maximum HP Case(Gas)

  • Flow rate Kg/h 9695 20713
  • Density Kg/m3 1.4 2.66
  • Viscosity cP 0.016 0.016
  • Mol.Wt Kg/Kmole 34.07 34.45
  • Pressure Bara 1.088 2.153
  • We provided our customer with a QWP Type 5 demister of the following configuration.

Demister Density Surface Area Wire Dia Free Volume %

  • Type 5 144 Kg/m3 288m2/m3 0.28mm 98.2
  • The demister installed will now cause a pressure drop of 4mm water column with an operating velocity of 2.02m/s at a healthy Operating Velocity – Maximum Velocity ratio of 0.53. The location of the demister and support detail drawings were designed and drafted along with process performance guarantee given to customer.

Please feel free to contact us at sales.export@qualitywire.com.bh for customized separation solutions.

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