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  • Users: chemEcaleb
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  1. chemEcaleb

    Sodium Chlorate Centrifuge Solids Discharge Deceleration Device?

    A 450 mm pusher centrifuge operating at 900 rpm discharges 8 tons per hour of 2% wt moisture sodium chlorate into an 10' long 8" vertical cylindrical chute that feeds a fluidized bed dryer (FBD). Chunks of product form on the screen of the FBD directly underneath the feed chute. Efforts have...
  2. chemEcaleb

    Nitrogen Purge Purity Requirements

    Nitrogen gas is used to displace hydrogen off gas from pipes generated in an electrolytic process to prevent explosions during maintenance, and cell line shutdowns when oxygen generation is increased. How do you determine the minimum purity of nitrogen required for this activity?
  3. chemEcaleb

    Filtration Problems: Sticky Slimy Cake in Brine Filtration of Chlor-Alkali Plant.

    Note: It's a sodium chlorate plant, not exactly a chlor-alkali plant, but the two have a lot of similarities. The reason I'm posting this is to share a recent success I had this summer with a filtration problem that has haunted the plant since the day it was built 25 years ago. We use candle...
  4. chemEcaleb

    Modeling 3 pass shell and tube steam surface condenser.

    I'm working on replacing/debottlenecking a steam surface condenser that's used in our "vacuum boiler" (it's a draft tube baffle crystallizer built by Swenson). Maarky has sent me a proposal, but I just want to do some design verification to make sure this will work for us in the event that we...
  5. chemEcaleb

    Fluidized Bed Dryer Operation: What a Mess

    Please refer to attached sketch. Last June, I completed a project that eliminated a screw auger between a centrifuge and a fluidized bed dryer (not my idea for the record). Since then operators have not been happy with me because they had to wash out the dryer every 3 days due to chunks forming...

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