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  1. Fahad3608

    Distillation process control

    Hi everyone, I have a question regarding the distillation process control, we all know that distillation process is used to separate two key components. The temperature and pressure gradient are high at the bottom and low at the top, (bottom to up). However, my question is, why there is a...
  2. Fahad3608

    Liquid Nitrogen

    I have the data sheet, but there is nothing crucial in it except what I have mentioned. Yes, I have contacted the company and I did not receive any feedback yet
  3. Fahad3608

    Liquid Nitrogen

    It is ambient vaporizers, and its sized for Max. 9000 SCFM/8hrs and Min. 1300 SCFM/24hrs
  4. Fahad3608

    Liquid Nitrogen

    yes, it is written " the flow rate is 1300 SCFM for 24 hours and 9000 SCFM for 8h/day"
  5. Fahad3608

    Liquid Nitrogen

    -as i mentioned, i am just like you , I am wondering about the basis they used and written in their manual. -yes, right thanks
  6. Fahad3608

    Liquid Nitrogen

    Thanks a lot for your explanation, but I think as you mentioned there is something wrong in their basis or the flowrate units.
  7. Fahad3608

    Liquid Nitrogen

    Could you please share the calculations you made, Thanks,
  8. Fahad3608

    Liquid Nitrogen

    What pressure are the tanks kept at? 165 psig What conditions are considered for "S"? 70 deg F, 1 atm / 0 deg C, 1 atm / 15 deg C, 1 atm, or something else? i don't know the vendor calculation basis expansion factor would be dependent on what temperature / pressure you are expanding to...
  9. Fahad3608

    Liquid Nitrogen

    Greetings, we have two storage tanks of liquid nitrogen as an emergency back-up in our plant, and it was written in the vendor manual the storage capacity can supply the required nitrogen in a gaseous form for 8 hours with flow rate of 9000 SCFM and 24 hours with flow rate of 1300 SCFM...
  10. Fahad3608

    Automation of excess steam condenser unit.

    Burning fuel to generate steam and then discharge it to condensate through the aforementioned excess steam condensers is not practical at all, the board operator in the Central Control Room CCR is placing the PCV-1 and PCV-2 on MANUAL mode to get rid of the hammering issue. what I have observed...
  11. Fahad3608

    Automation of excess steam condenser unit.

    Greetings, We have an excess steam condenser unit that needs to be automated in order to avoid having huge amounts of condensate and effectively utilize the steam's energy as much as we can. Unfortunately, we couldn't due to hammering issue. Please refer to the attached word doc for further...
  12. Fahad3608

    Boiler superheaters

    I second you
  13. Fahad3608

    Boiler superheaters

    many thanks gents.
  14. Fahad3608

    Boiler superheaters

    greetings all, It is my pleasure that I joined a such excellent community for chemical engineers and knowledge sharing. Regarding the natural circulation boilers, I am just wondering, why there are two super heaters and water spray valve is located between them ? is one superheated not enough...

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