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  • Users: dpugliesi
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  1. dpugliesi

    Certificates for Chemical Engineers

    What are the most important and recognised certificates related to Environmental Protection or Environmental Management for a Chemical Engineer?
  2. dpugliesi

    Help with furnaces

    Do you know about frequent failures in an industrial furnace, in particular those located at Z-neck and SQE? Also, could you suggest a detailed book regarding furnaces operations and maintenance?
  3. dpugliesi

    Quantity of entrained liquid

    How can I calculate the quantity of liquid (in kg/s or cm3/s) entrained by vapour, given the quantity of liquid in a pool and the quantity of vapour flowing through this liquid pool? Thanks.
  4. dpugliesi

    Demineralized water purity

    What is the typical purity of water demineralized by anionic and cationic resins? In particular, how much ppm or ppb of salt it typically contains? Thanks.
  5. dpugliesi

    Equation to calculate fouling factor

    It exist any equation to calculate fouling factors? In particular I am interested to the case of demineralized water in closed loop at low pressure and a temperature around 50-70 °C. Thanks.
  6. dpugliesi

    Typical cleaning period for heat exchanger

    What is the typical time period required before to clean an heat exchanger? In particular I am interested to know this information for a tubular heat exchanger or evaporator or reboiler (e.g. shell and tube or double tube) in the case in the shell are circulating demineralized water and steam...
  7. dpugliesi

    Reaction kinetics data

    Do you know any kinetic data for the following reaction or where I can find these data or any software or method to estimate them (even roughly) without doing any laboratory experiments? CH4 + 0.5 O2 + C8H4O3 --> C9H8O4 methane + 0.5 oxygen + phthalic anhydride --> monomethyl phthalate...
  8. dpugliesi

    Mixture urea-water

    The mixture of 32,5%wt urea with water is called AUS32 and it is liquid at standard conditions (1 bar, 298 K), but in Hysys this mixture is predicted as liquid-solid and a lot of urea doesn't dissolve in water (so it is in a solid phase). How can I adjust the value of solubility of urea in...
  9. dpugliesi

    Kinetic equation

    How can I use a kinetic equation different from that provided by Aspen Hysys? I need it in the form: vr = A*exp(B*T)*C1*C2 where: vr: reaction rate A, B: experimental parameters T: temperature C1, C2: concentrations of reagents

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