Is there any relationship between the amount of acid-base regeneration of the resin tower and the throughput of brine~!?
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This post was last edited by sunjl1981 on 2013-1-6 20:18 The resin tower is mainly used to remove impurities in brine. The amount of acid and alkali added affects the quality of the resin tower regeneration. I wonder what the acid-base regeneration amount of the resin tower of each manufacturer is? In addition, when the brine throughput changes, such as when it is not running at full load, and when the brine usage is different from when running at low current, for the resin tower, should the amount of acid-base regeneration be adjusted accordingly? Or... :) Haha, I hope you can give me more advice, :victory: # , , &
I think it is best to adjust the amount of regenerated acid and alkali according to the amount of brine being processed. However, several companies I know do not adjust in that way. Instead, they always regenerate at a certain amount. When it is analyzed that the regeneration is insufficient, they will be regenerated again.
It also has something to do with the quality of the brine being processed. When the brine quality is the same, as the brine flow rate increases, the amount of acid and alkali should increase. The specific situation will only become clear after trying it.
1. Generally, the working margin of the resin tower is relatively large, and the process design is a two-tower or three-tower process.； 2. Usually when the flow rate does not change much and the flow rate is not working at a low flow rate for a long time, the amount of acid and alkali is generally not adjusted to ensure the regeneration effect as the first priority. 3. When the project is divided into two phases, the amount of acid and alkali will be determined through debugging in the first phase. After the production expansion in the second phase is in place, the amount of acid and alkali will be increased to reduce waste. ； 4. This is how we implemented it in two phases. ； 5. However, after the single tank is stopped, the acid amount will not be adjusted because the load will be increased soon.
Intuitively, it doesn't matter. The size of the resin tower design (including the initial height of the resin layer) is designed according to the maximum load of your annual output. It is objectively calculated, because the degree of resin crushing over time and the quality of the brine, especially the quality of the secondary brine, are related to resin drift and the reduction of the resin layer. It can be regenerated in multiples at an appropriate time. If there is more brine overflowing from the resin trap and more broken resin, the flow of brine reinjection can be reduced, but the total amount remains unchanged, that is, the reinjection time needs to be increased.
Common working conditions (take a factory’s 50,000 tons/year production line as an example) Operation rate solution minutes Remarks Water washing 1 9-10m3/h Pure water 60 Backwashing 10-12m3/h Pure water 30 Pickling 6-7m3/h 31% hydrochloric acid + pure water 45 Pure water 5.0m3/h + hydrochloric acid 1.25 m3/h ((9((((5) Acid concentration 6-8% Water washing 2 8-9m3/h pure water 120 alkali washing 6-7m3/h 32% sodium hydroxide + pure water 90 pure water 5.5m3/h + alkali 0.6m3/h alkali concentration 4% water washing 3 9-10m3/h pure water 60 waiting 770 brine replacement 4-5m3/h brine 180 waiting 60 ★★ The time and volume of brine treatment are related to the working conditions gfmin@sina.com
Strictly speaking, the amount of regenerated acid and alkali has nothing to do with the amount of filtered brine. Because during regeneration, it is calculated based on the fact that the resin has completely changed into Ca+ and Mg+ types. Of course, the amount of resin is also calculated based on the specifications of the brine, that is, the amount of calcium and magnesium contained in the brine.
Thank you for your participation, haha:handshake The regeneration amount of acid and alkali is basically set according to the maximum displacement amount during the design. During this period, there is the problem of the brine exchange volume. When the brine throughput is large or the normal operation is performed, there is no problem with the set acid and alkali regeneration amount. However, once the brine throughput is encountered, that is, when the replacement demand for the resin tower decreases, for example, the existing resin tower is designed for eight electrolyzers, but only four are now in operation. In this case, should the related regeneration amount of the resin tower also be adjusted accordingly? The above are all based on my humble opinion, and I hope you can give me some advice~! :P
There is no need to adjust the acid-base regeneration amount, just extend the working tower time.
It should be added that if the resin tower is not at full load during low current operation, the regeneration cycle can be extended without reducing the acid-base regeneration amount.
Not only does your manufacturer have any experience in operating like this, but I am just talking about this casually without any specific concept. I hope you can give me more advice: handshake, thank you in advance~!