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  • Users: chemjock
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  1. chemjock

    storage standard for world class methanol plant

    4 x 150,000 BBL IFR tanks are proposed for a new methanol plant. Is nitrogen blanketting required for the vapor space or are circulation vents sufficient?
  2. chemjock

    corrosion in NHT stripper overhead system

    I am working with a design that injects filmer/neutralizer in a carbon steel NHT stripper overhead system for corrosion control. I am comparing this with a design manual that says that extra corrosion allowance can take care of the problem. Will this work for condenser tubes made of carbon steel?
  3. chemjock

    DEA sulfur scrubbing capabilities

    We are designing an amine scrubbing unit for the offgas from a NHT. Our design fuel gas sulfur spec is 10 ppmv H2S. An older reference said that DEA cannot go this low. The promax simulation shows that it is achievable. Can I believe the simulator?
  4. chemjock

    fired reboiler

    What percent vaporization should a fired heater in naphtha reboiler service be designed for?
  5. chemjock

    high back pressure relief valves

    Recently a colleague asseted that PSVs with high set pressures (about 500 psig plus) and sonic velocity in the tailpipe should have a higher flange rating than 150# on the outlet because the pressure at that point would exceed the lower flange rating. Scanning a vendor catalogue shows most...

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