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Sprayball selection for steam fired boil kettle

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  • #16
    So I learned much like you all did, and I was hesitant for the same reasons. My background is in hazardous materials safety, so I thought much along the same lines.

    When washing with the acid first, yes you remove some mineral build up, but the main purpose is to soften the protein structure of the build up. The reason for no rinse between is because it will give the complex protein structures a chance to reset and "lock up" after the acid wash. The no rinse is very important. Yes, some of the detergent solution will be neutralized, but if you fully drain the acid solution first, you won't have much molar mass left for the neutralization/reaction, and the softened proteins will be removed much easier by the detergent.

    To avoid "the gunk" I try to give a strong hot rinse first (and usually cycle for a few minutes). It removes any easy solids and preheats the vessel so I don't loose temperature in cycle. The rest of it tends to float on the top of my solution and hasn't presented an issue for me up to this point. Since the cycle should be done hot, it helps to pre-rinse hot.

    There used to be a few data sheets on this technique on Birko Corps website, but I haven't been able to find them on there recently. I have some info in .pdf that I can send to y'all if you want to see the recommended procedure from Birko and some details on it. Just PM me or leave your email address here. You can also contact Dana, as he is "the man", and he can give you more complex details if interested.

    I often use their described chemical formulations (Acid Brite #2, Bru-R-Eze, Cell-R-Master, ect), but have also used other manufacturers products that consist of the same chemical compositions and ratios. The prescribed detergent is an alkaline non-caustic, but it seems to have worked well with the sodium hydroxide (Cir-Q-Late) in place of it.

    Sorry I don't have easy volume answers at hand, but if you contact me, I can forward the documents I have saved. I generally don't need this method often, but it has worked quite well when something sticks or builds up over time. This specific method has been used on a dirty wine tanker as well, so it obviously has been proven to work on large vessels (even back in 2005).

    I have been using this method for about 5 years now, and have seen no negative effects, other than the cost of chemicals. I usually run regular CIP (caustic, rinse, acid, rinse) unless it gets build up. Probably use this method every 4-6 months on average.

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    • #17
      If re-collecting the solutions, I usually collect most but dump the first little bit and last little bit to avoid solids collection. If there is some solids that end up in my CIP tanks, I just let it settle and dump off the bottom until I get a decent amount out before the next usage. I test concentration and re-dose as needed.

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      • #18
        Update!

        Thought I'd provide an update: we did the acid straight to caustic with H2O2 and got great results. I found I had to do another acid wash afterwards to clear off some the residual inorganics. Kettle cleaner than it is been, even with manual scrubbing, in a very long time. I want to play with the acid concentration a bit more at the start and we may play with the peroxide concentration a bit but very, very happy with initial results. One thing I found out was that my flow rate was a bit less than I thought (probably closer to 70 - 80 LPM) but I still seem to get getting coverage - I assume this just affects time and concentration required. Thanks all for the help! If I have any more learnings will be sure to share.

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        • #19
          Awesome man. I am glad to hear it worked for you like it has for me!

          I will continue to recommend it to people with build up issues in full confidence.

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          • #20
            UnFermentable

            I sent you a PM a few days ago, but my email has been badly hacked since then so I haven't been able to read anything for a few days. I have now changed email provider. I'm still interested in hearing of your experiences / documentation so am dropping you a PM with my new email address.

            Thanks in advance

            Cheers

            Dick
            dick

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            • #21
              Dick,

              It looks like to u've got too many stored PM's so I couldn't send you one. Not sure if it means you can't send one either, but I didn't see any messages from you in my inbox.

              If you try me again, I will definitely shoot over what I've got!

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              • #22
                Thanks for trying - I have cleared out a few messages now, so it should work OK now. I wish they let you know automatically when the limit had been reached
                dick

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