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  • Users: gregq8
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  1. gregq8

    Compressor Performance Problems

    Currently the feed rate to our FCC plant is limited by the wet gas compressor performance (2-stage variable speed centrifugal compressor). We have conducted a survey on this compressor and have plotted the polytropic head (corrected to a standard speed) versus actual flow. The polytropic head...
  2. gregq8

    NPSH for Separator Water Stream

    I am working on a project to replace the pumps that are used to pump a water stream leaving a three-phase separator. The three phase separator operates at 60 deg C and 111kPaa. I have assumed that the water-rich stream being pumped is at equilibrium with the oil and vapor streams leaving the...
  3. gregq8

    Chemical Prices

    Please could somebody tell me of a website adress where I can find market prices for different chemicals over the last 4 or 5 years? Greg
  4. gregq8

    Carbon Deposition in Methane Reformer

    Dear All, The feed to a methane reformer unit comprises of H2, C1, C2, C3 etc. As the SG of the feed increases, carbon deposition in the feed convection heater tubes as well as in the primary reformer catalyst tubes occurs. To prevent carbon deposition from occuring the steam to carbon ratio...

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