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  • Users: leakyseal
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  1. leakyseal

    tank shield design to contain pinhole leaks?

    Folks, I've poked around here quite a bit with no luck so hopefully the answer is not staring me in the face. We have a chemical storage tank inside a containment bund of sufficient volume to hold 150% of the tank's volume, as one may expect. The question has arisen, what if there is a...
  2. leakyseal

    simple (?) question regarding tank headspace vapour

    Hi Folks, I am having a real Chem Eng 101 Brainfreeze. My embarrassment at having to ask this question, however, is outweighed by my desire to get things straight in my mind. I have an essentially pure solvent in a storage tank (relatively high boiling, benign solvent, smallish, in plant...
  3. leakyseal

    simultaneous dust and organic vapor control in mixing tank

    Hi, We are compounding glycols with surfactants and other powdered additives in a large agitated tank. Powder addition is generally brute force bag breaking over an open hatch. Glycol is heated to enhance dissolution of solids. There are thus two problems associated with the tank...
  4. leakyseal

    suction pressure losses in submersible pump?

    Dumb q. for the assembled cognoscenti: I'm working through the hydraulic modelling for my first wet well. Despite a reasonable amount of experience with pumping systems I haven't really worked with sub pumps before. Simple question on its face: Are there any suction friction losses to...
  5. leakyseal

    Control Narratives: Recognized Standards, Recommended Methods?

    Any advice as to standard guides for the creation of robust, standardized control narratives? Our normal process is this: - develop PFDs - develop P&IDs including an intermediate level of info density (say, element bubbles and display bubbles, maybe alarm states if the dwg doesnt get too busy)...
  6. leakyseal

    request for assistance with overhead condenser on process tank

    Hi folks, I've been asked to assist with some design which is a bit beyond my experience and I keep getting trapped in some circular thinking -- I'm hoping someone can help me sound this out a bit. An existing process tank contains a hydrocarbon below its boiling temperature. The tank is...
  7. leakyseal

    LEL measurement within a process tank

    Does anyone have experience installing LEL and O2 sensors such that they are measuring the environment within a tank? The tank is blanketed with Nitrogen (Fisher ACE controller on the inlet side, Protectoseal PVSV on the outlet) and we require the sensors to confirm the blanket. The further...
  8. leakyseal

    seeking feedback on solids drying application -- tray vs rotary

    Folks, Seeking solutions for the processing of a 35% solids slurry (metal plating wastes) where it is desired to evaporate the free liquid completely. My thinking had been along the lines of an internally agitated batch mixer/dryer or rotary dryer with internal flights, to allow good surface...

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