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Recent content by AUSLK

  1. AUSLK

    coating for caustic storage tanks/pipes

    nuig, What convinced you to use FRP/PVC? Any technical data from vendors/manufacturers to support your decision that is available for others to reference? Thanks
  2. AUSLK

    correlation between silica and conductivity

    I don't beleive there is any direct correlation between silica and conductivity. Conductivity measures the ionic content of the water whereas silca is either colliodal, dissolved or in suspension and not ionically charged, thus not contributing to the conductivity value. Typically you need to...
  3. AUSLK

    Ammonia Scrubber Particulates

    If you don't have a "mist eliminator" after the packed bed and scrubbing solution distributor (if a verticle packed tower), but within the scrubber, this could be a inexpensive solution. We scrub with Sulfuric acid, form ammonium sulfate which is soluble (up to about 38%) in water and...
  4. AUSLK

    pH for removal of NH3 from exhaust with dilute H2SO4 Scrubbing?

    25362, Yes that is what I mean, and apparently not toxic (at least at the concentrations they are using). Do you agree with the 1:2 ratio of sulfuric acid to ammonia?
  5. AUSLK

    pH for removal of NH3 from exhaust with dilute H2SO4 Scrubbing?

    25362, yes jppmj advised 1:1 moles H2SO4:NH3, I am using 1:2 and was hoping to get verification on the correct number. I have known about the various uses of ammonium sulphate, my local water district injects it in our potable water supply as a nitrogen source. Unfortunately my production rate...
  6. AUSLK

    treatment of sour gas from sour water stripper

    Finfan, Typically that stream is ~30% H2S also, so in most cases, burning it directly without further downstream treatment would violate environmental regulations/permits for SO2 emissions.
  7. AUSLK

    pH for removal of NH3 from exhaust with dilute H2SO4 Scrubbing?

    jppmj, I am curious about your 1 mole H2SO4 to 1 mole NH3. I was using the following chemical reaction equation: 2NH3 + H2SO4 = (NH4)2SO4 Is this not the correct equation to use? Thanks, AUSLK
  8. AUSLK

    pH for removal of NH3 from exhaust with dilute H2SO4 Scrubbing?

    All, The scrubber is an existing FRP scrubber from a previous acid scrubbing application. NH3 scrubbing is much easier than acid scrubing so the scrubber size should not be an issue (per vendor). Main challenge is balancing water consumption versus H2SO4 consumption to keep pH of wastewater...
  9. AUSLK

    pH for removal of NH3 from exhaust with dilute H2SO4 Scrubbing?

    I can calculate the required amount of H2SO4 required to react with the ammonia (in a verticle packed tower scrubber). But I also need to know what "optimal" pH to operate at and also calculate my H2SO4 consumption to reach that point. Thanks for the help.
  10. AUSLK

    Acid gas flare

    I'm surprised you are allowed to flare this gas per you local environmental regulations. You a probably emitting a large amount of SO2 (acid rain component). Send this gas stream to your sulfur plant (once you get the plugging problem fixed). I would suspect the yellow flare is normal as you...
  11. AUSLK

    Oxygen enrichment in sulfur plant

    You have similar concerns of all the other Sulfur plant operators who have switched to oxygen enriched air. It is common at the US refineries that I have experience with. Safety is always an issue, and the gas suppliers have developed very same delivery means for accomplishing this.
  12. AUSLK

    treatment of sour gas from sour water stripper

    As a former Sulfur Plant Optimization Engineer, I have visited many plants and conducted optimization testing on them. The issue you have is getting adequate destruction of the Ammonia in the sour gas stream. With a typical reaction furnace temperature of 1800-2000F the ammonia does not fully...
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