High NH3 pump discharge PSI

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  • #100937
    pbaboo
    Participant
      • Expert

      Dear Channing spears

      If any margin in Ejector control valve stem then do it, it can possible ,But I think this the problem of u/s strainer choking anyway. In case any opportunity, then strainer to be cleaned. Or if load limitation then take s/d, and isolated the lines from Ammonia feed pump to Ejector u/s, it will take time hardly 2-3 hrs for ammonia draining and flushing.

      Regards,
      Prem Baboo

      #100936
      nick102286
      Participant
        • Participant

        Thank you all for your replies.
        High PSI seen when increasing rate to 1700+ TPD.
        No recent maintenance on ejector.
        Have not checked strainer yet but I will.
        So adjusting NH3 ejector hand wheel will not help any?

        #100935
        pbaboo
        Participant
          • Expert

          Dear channing spears
          Please check upstream strainer before strainer.

          https://www.ureaknowhow.com/ukh2/round-table/viewtopic.php?f=7&t=490&p=5258#p5258

          Regards,

          Prem Baboo


          Attachments:

          #100932
          mohammadianm
          Participant
            • Expert

            Hi Channing,
            Have you faced with this high pressure issue recently?
            Any maintenance on the ejector?

            #93699
            nick102286
            Participant
              • Participant

              Dear all,

              We have issue with high discharge PSI of NH3 pumps at max rate and I was wondering if adjusting the NH3 ejector hand wheel would help this issue. Has anyone ever tried this with success? Or would it further increase PSI at NH3 pumps discharge? Currently NH3 ejector is 100% open.

              1700 TPD current
              1200 TPD nameplate
              2100 PSI Synthesis
              2/1 N/C feed ratio
              Stamicarbon CO2 Stripping Plant
              Reactor, vertical condensor, scrubber, CO2 stripper
              L.P. recycle section
              No M.P. section

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