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  1. scorcher

    Recovery of acid tower packings

    Hi, I am looking for an efficient way to re-use packings form a tower contining 98% H2SO4. Removal of old packings is by vacuum, while replacing them must be carried out by hand. TO avoid handling acid comtaminated packings, we dispose of teh old packings and replace with new ones. Does...
  2. scorcher

    H2SO4 level instrument

    Hi, I am looking for are replacement level instrument for 96-98% H2SO4 in a tank with high turn-over and water addition. The current air bubblers (used for indication) tend to fail regularly due to the tubes blocking with corrosion products. THe new isntruments are part of a control system and...
  3. scorcher

    PVDF Hot conc sulfuric acid

    Hi, I am trying to source information on the suitability of PVDF (piping) with hot (up to 100C) 90-98.5 sulphuric acid. Information I have found so far gives the full range of "suitable" to "not suitable". I know that the temperature itself is OK, but am looking for clarity...
  4. scorcher

    Ullage/sizing

    Is there a consistent definition of ullage? E.g., if a tank is quoted as 100m3, is this the absolute volume, the mechanical design volume to a level, or the maximum liquid in normal operation. Which of these figures does ullage relate to. Similarly for reactors, if it is quoted as 10,000l...
  5. scorcher

    Demisters

    Our plant burns liquid sulphur to produce SO2 to be fed directally to another plant on site. The SO2 is cooled initially in a waste heat boiler, then further cooled to around 160C as the transfer pipe supplies it to a final packed tower. This tower contacts the gas stream with 98% acid to...
  6. scorcher

    H2SO4 Plant pumps

    All, I need to source some new pumps used to pump liquid sulphur at 130 - 145C. Can you suggest any specialist suppliers for this type of equipment. Also, 96 to 99% H2SO4 at temps up to 90C. Are submerged pumps the best way to handle these types materials. I have found Lewis pumps, are ther...

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