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  • Users: dimitris
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  1. dimitris

    Carbon Monoxide Portable Detectors

    Dear All, In our Hydrogen Production unit we have a UOP Polybed 2 PSA unit. As you all know the purge product contains severe quantities of CO and Hydrogen. (In our case an approximate concentration is 7% CO and 17% Hydrogen). We are currently screening the market for portable CO detectors that...
  2. dimitris

    BFW degaser operation

    Please discuss the temperature of BFW inlet at a degaser. In our Ammonia plant we are feeding DW at a temperature of 90 C, in the degaser. The degaser operates at 102-103 C. Please discuss if an increase of the inlet temperature at 93-95 C would cause any problems at the degaser's operation...
  3. dimitris

    Refrigerated Ammonia Piping Inspection

    Does anyone have any experience on inspection methods on refrigerated ammonia piping. We intend to inspect our piping network, but wish to do so without the removal of the insulation and with special care on tee-connections. Anyone has any experience relevant to this issue??? Regards, Dimitris
  4. dimitris

    SB 111-687 ???

    Dear All, Does anyone of you have any idea the type of material and the exact composition of SB 111-687 material. I looked in to the appropriate tables but with little luck, thank you in advance, Dimitris
  5. dimitris

    Ammonia Plant Mothballing

    Dear All, I decided to write the following thread in the refining section even though ammonia is not a Hydrocarbon but because the process used to produce it ressembles so much standard ferining processes, I beleive that it is relevant. I am a head process enginner in an Ammonia Plant that is...
  6. dimitris

    Hydrogen Purification with PSA

    I am a process engineer woring at an Ammonia plant. The necessary H2 for the NH3 production is performed with Catalytic Steam Reforming and the purification of the gas stream is done in a Pressure Swing Adosrption multivessel Unit. Lately the performance of the adsorbers has decreased. We...

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