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  1. pmoneysh

    Process Design Softwares

    Oh I am really sorry. It was unintentional and I cant delete it. :(
  2. pmoneysh

    Process Design Softwares

    Hello experts, I am now involved in a project to design a distillation column for PF5 generator. This project is a scale up of existing plant. Existing design of distillation column is: Bottom part of the column is a reactor and there is a re-circulation pump. There is only 1 outlet from the...
  3. pmoneysh

    Scale up distillation column

    Hello experts, I am now involved in a project to design a distillation column for PF5 generator. This project is a scale up of existing plant. Existing design of distillation column is: Bottom part of the column is a reactor and there is a re-circulation pump. There is only 1 outlet from the...
  4. pmoneysh

    overall heat transfer coefficient value

    Thank you Mortena and Pierreick for the suggestions. I will do the calculations :) Both comments are really helpful
  5. pmoneysh

    overall heat transfer coefficient value

    Hello experts!! Is it possible to obtain overall heat transfer coefficient value (roughly) without experiment for a reactor with cooling jacket? My approach to estimate U value by designing shell and tube heat exchanger using process simulator but the value was quite high than our expectation...
  6. pmoneysh

    simulation

    We can use stream calculator.
  7. pmoneysh

    datasheet preparation

    Thanks, MJCronin I found the answer in the forum you mentioned.
  8. pmoneysh

    datasheet preparation

    Dear experts, I am still in the learning phase. Bear with me. (My main task is process simulation but slowly trying to develop myself into a process engineer) While preparing a datasheet for pressure vessels, what would be sound engineering practices to specify the design pressure and...
  9. pmoneysh

    Looking for turbo-expander vendor

    Thankyou Strong and EdStainless :)
  10. pmoneysh

    Looking for turbo-expander vendor

    Can anyone suggest a vendor that manufactures a 2 KW capacity turbo-expander? It is for laboratory purposes. The least I found was 25 KW by Turbogaz.
  11. pmoneysh

    Looking for pump vendor

    Thankyou TugboatEng for the suggestion. However, I contacted LEWA as suggested by DMHCE and already sent the datasheet for quotation.
  12. pmoneysh

    Looking for pump vendor

    Thankyou DMHCE, I will write an email to them.
  13. pmoneysh

    Looking for pump vendor

    I am looking for a pump vendor which meets my design specification: Process fluid: Liquid CO2 Temp: -50oC suction prsesure: 7 barg discharge pressure: 70 barg volumetric flowrate (at T and P): 60 L/hr. I tried to find local vendors in South Korea but no luck with this low temperature and small...
  14. pmoneysh

    bubble point pressure vs absorber bottom pressure

    To make my point understandable without confusion..... I am getting liquid phase even below the bubble point pressure. And the vapor phase is produced only at vacuum pressure. I cannot plot the phase envelope due to some required changes to be made on thermodynamic model.
  15. pmoneysh

    bubble point pressure vs absorber bottom pressure

    Dear experts, This query is based on simulation results (aspen hysys). What I thought was scrubber or column bottom pressure would be at bubble point which corresponds to bubble point pressure. However, the vapor pressure at the scrubber bottom temperature (with the same composition) is...
  16. pmoneysh

    Enrtl Fluid Package For CO2 Removal In Aspen Plus

    To me it is not okay..... usually such results are not reliable. What is the error msg?
  17. pmoneysh

    Enrtl Fluid Package For CO2 Removal In Aspen Plus

    I did some projects regarding CO2 capture but used aspen hysys as suggested by the client (and using a different solvent). We don't need to change the chemistry as it is very difficult to obtain our own reaction kinetics. Aspen plus has a very useful tool "design spec". Therefore, after fixing...
  18. pmoneysh

    Enrtl Fluid Package For CO2 Removal In Aspen Plus

    "But when I try to increase BOTH (the lean solvent flowrates and K2CO3 concentration)" What is the ratio of Flue gas CO2 flow rate and solvent flowrate?
  19. pmoneysh

    Extractive distillation column

    There is no straightforward equation to estimate the minimum no of trays/reflux ratio for extractive distillation. Take a good initial guess for number of trays and observe its effect (vary the tray no.) on duty of reboiler and condenser. You might get a curved line. Higher duty-more operating...
  20. pmoneysh

    Ethylene Oxide Separation Column In Chemcad

    If you want to proceed to really build the scrubber on the basis of simulation, the appropriate thermodynamic model should be elecNRTL (you can change the vapor phase to RK model). You are not supposed to use UNIFAC model (it is my recommendation). you can estimate missing interaction parameters...

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