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  1. fd74

    Material for anhydrous HCl?

    According to your experience, what material should be used for piping with anhydrous HCl? Process conditions are: Temp: -35 to 50 °C ( -31 to 122 F) Press: FullVacuum to 45 bar. Thank you! fd74
  2. fd74

    Overall heat transfer quick estimate

    Hi everybody, I need to quickly estimate the geometry of a jacket for superheating anhydrous hydrogen chloride inside a pipe (assume high pressure gas). Shell-side fluid will be hot water. Can anyone of you suggest me an assumption for overall heat transfer coefficient U? Thanks in advance...
  3. fd74

    Centrifugal pump duty point prediction

    A centrifugal pump was selected for a certain application for an expexted duty point of 30 m3/h @ 20 m (for those of you not familiar with metric units, don't bother because numbers are not so relevant for the final question). Owing to modifications to the piping during construction, pump is...
  4. fd74

    Control of flash separation process

    I'm currently designing a small unit to separate ammonia from lubricating oil. Contaminated ammonia from storage tank is fed to an electric heater and then to a flash vessel. Oil-free vapour is continuously withdrawn from the top of the vessel by means of an alternative compressor...

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