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  1. kagadpencil

    Wash Water Drum

    I am a rookie engineer. Following are my questions that came to my head as I was reading (studying) a DWG (sketch really) for a Wash Water Drum involved in a refining project. In a refining operation, what does Wash Water Drum do? I see a corrosion allowance of 0.25" on the vessel - Is the...
  2. kagadpencil

    Recycle K. O. Drum

    I am a rookie engineer. Following are my questions that came to my head as I was reading (studying) a DWG (sketch really) for a Recycle K. O. Drum involved in a refining project. In a refining operation, what does Recycle K. O. Drum do? I see a 12" manway on the DWG - Is it physically possible...
  3. kagadpencil

    Effluent Seperator

    I am a rookie engineer. Following are my questions that came to my head as I was reading (studying) a DWG (sketch really) for an Effluent Seperator involved in a refining project. In a refining operation, what does Effluent Seperator do? Why is the corrosion allowance for vessel is 0.125, and...
  4. kagadpencil

    feed surge drum

    In a refining operation, what does feed surge drum do? What is blanketing gas? What is its purpose? On a drawing (roungh sketch really) for a Feed surge drum I see a nozzle connection for steam out, but I dont see steam in - Is there something wrong? Or is it for the steam that is removed from...
  5. kagadpencil

    delays? - fabrication of a pressure vessel

    An oil company has hired an engineering firm to revamp a particular site. The job involves installation of several new pressure vessels, distillation trays .. on an on .. Now an order has been placed to a fabricator in fabricate a new and huge stripper tower. I will like to hear you comments /...
  6. kagadpencil

    Sprayball Testing

    can some one tell me what exactly is Sprayball Testing and why and where it is used? I came across it while browsing http://www.psitanks.com/spraybal.htm
  7. kagadpencil

    trays

    I am trying to read up some introductory stuff about trays used in refinery applications, Hydrotreater etc. Any suggestions?
  8. kagadpencil

    sand blasting

    can some one tell me why metal turns white when it is sand blasted? - I was just curious since I was quite amazed to see it.
  9. kagadpencil

    nozzzles on a surge drum

    as you will know from my question, I am rookie. I am reading a drawing of a surge drum on some processing plant. The drawing mentions a lot of nozzles and manways etc. I am trying to find the total weight of the total installation. Where can I find (ASME standards? appendices?) information about...
  10. kagadpencil

    flue gas temperature

    I burn some CFM of fuel (natural gas) in oven at some % excess air. Air comes in at some Relative humidity, temperature and pressure. Fuel comes in at some pressure and temperature. Are their any tables that I can refer to, to decide flue gas temperature?
  11. kagadpencil

    1000 F mixture of air and superheated steam

    My flue gas in a commercial baking oven consists of a mixture of combustion products (CO2, N2, O2) and superheated steam (due to moisture removed from the feed in the baking process). In my current analysis, I am assuming properties of pure air to hold true for flue gases, but I guess if large...
  12. kagadpencil

    Looking for a robust co2 sensor

    I will like to direct your attention to the thread that I posted in a different forum. Instead of repeating my message and risking being kicked off this wonderful community, I thought I will just direct your attention to this thread. Please contribute if you can. thread41-97944
  13. kagadpencil

    Looking for a robust co2 sensor

    I am looking for for a co2 sensor that I can bury 1 feet in a pile of sand. I want to sensor to be robust against the dust problem. Are you aware of any such sensor in the market ? I have done a lot of looking but have not found a sensor that has some sort of shield to guard it against dust...
  14. kagadpencil

    steam data

    I am looking at steam table data for specific volume (ft3/lb) of superheated steam in the range 500 F to 1400 F. I am ok with data at 14.7 psi but I will like to incorporate the effect of variation of pressure. The variation is not much -- May be 2"wg at the most, do you think I should at all be...
  15. kagadpencil

    oven air IN - pressure loss

    I have written quite a few threads about the chimney stack + fan + oven problem that I am working on currently. Basically it is a natural gas oven, 20 feet of chimney stack + a variable speed fan at the end to control the excess air for the fuel combustion. We have an orifice in the chimney...
  16. kagadpencil

    standard conditions

    For SCFM purposes is temperature 70 F or 60 F? I know crane 410 uses 60 F - I wonder why when most other places (HVAC books etc.) I see 70 F. what is the most common? -- Or is this rookie missing something ?
  17. kagadpencil

    orifice pressure loss

    I am looking for a formula for the pressure drop in an orifice. I know the flow rate through the duct in which orifice is fitted. My orifice is square edged. I was looking at CRANE Technical paper 410 - A-20 - But the geometry of orifice does not quite match with mine. I also looked at Handbook...
  18. kagadpencil

    fan system for a chimney

    I wanted to bring the following discussion to your attention fan system for a chimney thread798-97111 Chemical process engineering Forum Can you please comment on the latest question? I believe that folks from this forum will have some good suggestions for me. Thank you.
  19. kagadpencil

    fan system for a chimney

    hi, with a 20 foot chimney for our over we are getting too much excess air. We need to bring the excess air by about 300%. Is installing a fan system on the outlet of chimney the solution ? I was thinking with original chimney we have too much excess air -- that means we have enough draft. Isnt...
  20. kagadpencil

    resistance coefficient - T fitting

    in a duct system of ours, we had a T fitting to allow for gas flow in perpendicular direction to the main flow direction. Then we decided not to allow that flow and hence we blanked the opening off using a wooden plank. But since it is not 100% air-tight, there is some resistance coeff...

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