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  1. daniellouw

    Galvanic corrosion between carbon steel column and stainless steel pall rings

    Thank you so much! This helps.
  2. daniellouw

    Galvanic corrosion between carbon steel column and stainless steel pall rings

    We have a carbon steel (CS) column with carbon steel pall rings. Methane-rich gas is fed at the bottom at about 30 °C and at the top, water containing CO2, is fed at about 200 °C. The purpose of the column is to saturate the gas with water to reduce the required steam needed to feed into the...
  3. daniellouw

    When to use a TSV on a water line

    skoutso, the isolation valves will be gate valves or butterfly valves and not check valves, thus I assume that in that case, a TSV will still be required. But thanks for that information. You say that you don't need TSV's with check valves.
  4. daniellouw

    When to use a TSV on a water line

    Hallo I am designing a 3" line to supply raw water. The line is about 750 m long. The inlet pressure of the line is about 900 kPa(g) (9 atm) and the source is an open dam (thus the temperature is ambient temperature, between 5 and 30 deg C). The line can be isolated at the inlet and outlet. My...
  5. daniellouw

    What demister type to use

    We are looking at an online cleaning system, but it is not going to be easy to install since the pressure in the knock out drum is about 2600 kPa. We also do not want to inject anything in the gas stream. The gas consists of CO, CO2, H2 and CH4. The water inside the gas consists of some tars...
  6. daniellouw

    What demister type to use

    We have a gas stream that contains sticky particles/droplets that we need to remove. In separating the particles we don't want to loose too much pressure. Options we have considered are: 1. Demisters (chevron plate type): Currently this option looks like the best option at this stage, because it...
  7. daniellouw

    Separate sticky particles from gas

    We have a gas stream that contains sticky particles/droplets that we need to remove. In separating the particles we don't want to loose too much pressure. Options we have considered are: 1. Demisters (chevron plate type): Currently this option looks like the best option at this stage, because it...
  8. daniellouw

    basic & detail design

    How I understand it is: Basic engineering - a pipeline with diameter x should be installed between A and B (done by the process engineer) Detail engineering design - where the pipeline will be installed, how the pipeline will be fitted at A and B, the configuration of the pipeline, schedule of...
  9. daniellouw

    PSV sizing for vapor-liquid mixtures

    Can anyone please tell me how to size a PSV (Pressure Safety/Relief Valve) for vapor-liquid mixtures. Some say that you calculate the area for the vapor and the liquid seperately and add the two values to get the total area (A certain PSV distributor did some calculations for me using this...
  10. daniellouw

    Demister position

    If a demister is right at the top of a methanol absorption column, why would you want to move it down about 1 meter?

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