Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by gacguy

  1. gacguy

    TEFLON LINING LIFE AS FUNCTION OF TEMPERATURE

    PAN and moltenmetal, Thank you both for taking the time to respond to my initial query. The party who asked the original question, per the intermediary party, is not providing any further information and so my contact said to forget about it. Perhaps, when or if the lining fails, they will be...
  2. gacguy

    TEFLON LINING LIFE AS FUNCTION OF TEMPERATURE

    Thank you moltenmetal for your time. As sometimes happens my customer, who is an intermediary for his customer, doesn't know the answer to your questions re type of lining etc. and his customer is going forward with accepting that operating the boiler at 212 degrees is not a problem. I guess...
  3. gacguy

    Phosphine removal from air

    jppmj There are granular activated carbons that have been used in this application. However, before recommending the use of carbon the following information is required. Your flowrate, concentration, temperature and pressure? gacguy
  4. gacguy

    TEFLON LINING LIFE AS FUNCTION OF TEMPERATURE

    I would like to know if the life of a teflon lining in a boiler at 212 degrees F would be less than that at ambient temperature. I've been told it would decrease by one-half.
  5. gacguy

    Another problem with activated carbon filter

    Hello again Nicksun, Are you still experiencing carbon fines? I still don't have a definitive answer. What is the opening size in the caps. If they are slots they should be 0.010 inches(~50-60 US Mesh; 48-60 Tyler mesh) for the carbon size you have. You indicated a chlorine concentration of...
  6. gacguy

    Another problem with activated carbon filter

    Hello again Nicksun, I apologize for asking the question re the type of carbon since you already said it is coconut. Two more questions: 1.When you load using 'jet flow' is the jet motive force water or steam? 2. What is the support for the carbon? Gravel, perforated plate, screen etc. What...
  7. gacguy

    Another problem with activated carbon filter

    Hello Nicksun, I'm still not sure what is causing the problem. Would you answer the folowing questions? 1. Is this a coal or wood based carbon? 2. Is the water entering the ACF clear, that is not gray? 3. What are the contaminates in the influent to the ACF? 4. What is the pH entering and...
  8. gacguy

    Another problem with activated carbon filter

    Hello Nicksun, What is the mesh size of your carbon? When you backwash what gallons per minute/ft2 of cross sectional area flow rate to you use? Is your operation continuous or intermittent? What is the temperature of the backwash water? How often do you backwash? Does the color occur right...
  9. gacguy

    Another problem with activated carbon filter

    Hello Nicksun: What is the viscosity of the liquid you are treating? What procedure did you use to add the carbon to the vessel? What prewetting procedure did you use? Did you backwash before treating? gacguy
  10. gacguy

    Remove FREON 22 from air?

    Does anyone have a technology for removing FREON 22 from air? The concentration range is 5-100 micrograms per cubic meter.
  11. gacguy

    problems with activated carbon bed

    Is your adsorber operating in the downflow or upflow mode? If upflow then this problem is usually solved by going downflow. If you are going downflow other causes of fines elution are frequent stopping and starting and viscosity. What is the viscosity of your solution? In systems where the...
  12. gacguy

    Pressure drop through filter sand

    I have two sources that give me widely differing pressure drop values through sand. Does anyone have the values for pressure drop through sand having an effective size of 0.45-0.50 mm, and a uniformity coefficient ~1.5 at flows of 6,8 and 12 gpm/ft2? Thank you in advance.
  13. gacguy

    Oily Water Separation On Board Ships.

    Lis, a combination of organo-clay and activated carbon is commonly used to remove oils from water. The clay can break emulsions if they are formed as a result of mechanical action. In fact organo-clay has been used by the Navy for use on submarines. E-mail biomininc.com for further information.
  14. gacguy

    tank truck venting and flame arrestors

    Bradstone One point about wetting. The water is eventually displaced by the organic and then you have the organic as a heat sink. If you look at any literature from vendors of flame arrestors you will see that they are always at the end of the line, not between the vessel and the source of the...
  15. gacguy

    tank truck venting and flame arrestors

    Bradstone At this high concentration I'm surprised that the temperature hasn't exceeded the ignition point of the organic on the carbon.The heat of adsorption is approximately twice the heat of vaporization, so in your case you have a considerable amount of heat released. Is there a long time...
See more

Part and Inventory Search

Back
Top