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Recent content by vedranpetro

  1. vedranpetro

    Ethanol/gasoline blending

    Hi! Please advise which of technique of blending ethanol in gasoline is acceptable and most common in refineries today: in-line vs tank blending? and pro's and con's of both ways I'm specially interested in blending E5 and maybe up to E10 tnx
  2. vedranpetro

    Ethanol pumping

    stanier and BigInch i'm talking about industrial pump ,and pure ethanol (cca 98%), not about cars and their pumps and trying to figure out usual type of pumps for ethanol (sealles vs. mechanical seal)
  3. vedranpetro

    Ethanol pumping

    tnx,useful tips
  4. vedranpetro

    Ethanol pumping

    tnx BigInch one more question is there any recommendation regarding choosing pump for ethanol- sealles vs. double seal?
  5. vedranpetro

    Ethanol pumping

    Hi! I have question regarding pumping of ethanol.It's new medium to me so my question would be do I need some special consideration/equipment for pumping that medium regarding anti-explosion protection? e.g. some anti-explosion valves on piping,drums with level indicators,... Is there any...
  6. vedranpetro

    Cooling down ethylene tank

    StoneCold Straight to the point, I calculated in that way. Nitrogen is not an option,and it will create great pressure in tank in that way. Also it's more stressful for material to dump it like that,and at almost 100 deg C lower temp than ethylene. You're right except that vacuum part.Ethylene...
  7. vedranpetro

    Cooling down ethylene tank

    Hi, I'm trying to calculate time for cooling down tank of ethylene. It's an atmospheric pressure tank .Temp of evaporation of ethylene at atm pressure is -103,6 deg C.Tank is now empty and at ambient temp.Tank is double-walled with an insulation between a walls. Any tips for calculation in which...
  8. vedranpetro

    Ejector for pump out water

    fistly tnx everyone on answers micalbrch,dcasto,kacarrol it' s not a question ,all those pumps exist in explosion proof version but it's much more expensive solution than some eductor. And that's what i want :cheap but good enough solution . tr1ntx interesting idea,tnx for drawing Finally i...
  9. vedranpetro

    Ejector for pump out water

    DliteE30 yes ,i also thaught about this since we already have wilden pumps on plant,but for this purpose it would be not the best option because it also has moving parts and you need that to be certified for zone ,expensive,complicated,i need simpler solution zdas04 i didn't understand...
  10. vedranpetro

    Ejector for pump out water

    Hi! I have ethylene pumps installed under ground level in a pit because of NPSH . The pit dimensions are 6x4m and the pit is 4m deep.There is no drainage so all rain finishes on the bottom of it, and you can't walk in a 20cm deep water:) The problem is :because of explosion zone i can't...

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