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  1. rhylsta

    Blowdown line on a Pressure vessel in a cryo plant

    Hi All, Please i need assistance again on the subject of blowdown system on pressure vessel. I am involved in an LPG plant project where we have a pressure vessel (cold pressure separator) operating at a pressure greater than 300 psig. The detailed designer has omitted blowdown line/valve on...
  2. rhylsta

    Draining The Cryogenic Cold Separator to the closed Drain Drum

    Thanks gentlemen, The drain line to the closed drain has been removed. Any situation that will require draining that leg will require a total process shutdown and the vessel can drain into the de-ethaniser tower where it normally feeds. decasto and sshep thanks again.
  3. rhylsta

    Regeneration of Molecular sieve bed of dehydration unit

    IngGasP, We also have a Dew pointing plant that has molecular sieve beds as dehydrator. Our regeneration is similarly done through heated gas from a fired heater. I once looked through the heater and all i saw was some woolly insulation materials and not a concreted material. This fired heater...
  4. rhylsta

    Draining The Cryogenic Cold Separator to the closed Drain Drum

    Hello, Please i need to be advised on draining the cold separator Vessel downstream of the a turbo expander in an LPG plant. I have been told that this is not a safe practice to drain into the closed drain system. What is proposed by design is to drain this vessel to the atmosphere. Please i...
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