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Recent content by gjmorin

  1. gjmorin

    Vacuum - pressure drop calc

    OK. I was thinking water when you mentioned that there is a limit around 20'. That shouldn't be an issue here - no phase limits. I appreciate the thoughts.... Greg
  2. gjmorin

    Vacuum - pressure drop calc

    Thanks David. The adsorbent materal should be dry, light and small, but it seems I'll be imposing a limitation that might affect the flow rate of the material. Gravity removal is not a good option- even with pressure assist. There is inert bed material at the bottom that would not need to...
  3. gjmorin

    Design temp. and pressure

    Design pressure is not necessarily what the pipe can withstand - it's what they system will see. If the line has a pressure limiting device, such as a relief valve or rupture disk, pressure is a pretty straightforward - the design pressure must be above that value. This might be 20% above the...
  4. gjmorin

    Vacuum - pressure drop calc

    Hi all: I'm working on a refinery unit that has a vessel at Deck 12 that'll need to have its dry adsorbent pellets removed once or twice per year as it is spent. This is a new feature on this type of unit, so we don't have specific operating experience. As we can't be assured the material...
  5. gjmorin

    minimizing flow into an air purge

    I have a number of pressure and level connections on a vessel that has a lot of particles and gaseous products that could condense at low temperatures into a gummy mess (technical term) We therefore purge the taps to keep a little reverse flow on the taps to keep them from being plugged. No...

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