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Chemist Needs Assistance with Flowmeters for Mixers

  1. May 22, 2017 #1
    I work in R&D for coatings and have a bit of a plumbing problem on my pilot coater. I've formulated a very reactive mix that, once mixed, increases in viscosity by 3000cP an hour. This makes it very difficult to get a constant roll of sample material to send to customers with the equipment that I have available.

    SO, I want to get a 1/2"x11" static mixer and use two feed streams to resolve this issue. My question should be simple to a trained professional. If I have one air line feeding a pressure pot 10psi and another feeding a second pressure pot 20psi, would you expect that converging these lines into a static mixer would create significant backflow at a final flow rate around 0.01gpm venting to atmosphere? Both mixes differ in viscosity by 5000cP. Alternatively, is there a valve that prevents backflow of both air and liquid to give me peace of mind that the proportions are being fed correctly?

    I sadly don't have $1000 for a couple of flowmeters...Here's a handy dandy picture.

    upload_2017-5-22_16-56-24.png
     
  2. jcsd
  3. May 23, 2017 #2
    Found an old positive displacement pump to replace the air lines and problem solved..
     
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