Regeneration of resin tower in Beihua Machinery
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This post was last edited by sunjl1981 on 2013-1-6 at 22:53. When regenerating the resin column in the Beijing Chemical Machinery plant, which pump is used for the final step of brine displacement? Is it still P-154? Can the liquid level in that saline high-level tank be guaranteed for instant use? # hcbbs
It can be guaranteed, as the amount of countercharged brine is very small compared to the amount of brine supplied to the cell. Also, it doesn’t have to be P154; it could also be the super-fine salt water pump P174.
This post was last edited by huawei on 2009-11-10 at 13:09. The total time for salt water replacement was 3 hours; for a resin column with a diameter of 1.8 meters, the salt water flow rate was approximately 4.7 cubic meters per hour, which has a minimal impact on P154. I don’t know what the size of the resin tower is for the original poster, nor what the set replacement time is; it’s possible to calculate that. With such a flow rate, the instrument control can keep up. Moreover, the sump itself also allows for larger fluctuations in liquid level.
Our model has a diameter of 2200 mm, a replacement time of 3 hours, a flow rate of 18.8 m3/h, with a total volume of 56.3 m3. It seems we don’t have a P-174 brine pump.
This post was last edited by sister on 2009-11-10 11:57. No way, 18.8 cubic meters per hour? What is your electrolysis production capacity? Such high traffic volume is incredible. Since there is no P174, it must be the brine resulting from the refinement of P154 through a resin tower. The original poster can go to the site to take a look; it should be a fairly simple pipeline, though the flow rate seems incorrect……
This post was last edited by pzhhuagong on 2009-11-10 at 12:12. With a diameter of 2200 mm and a replacement time of 3 hours, the flow rate should be around 7.5 m3/hour. Brine is used for the replacement process, and the power source is typically a brine pump for the concentrated brine. Regardless of whether your process involves brine – resin tower – high-level tank, or brine – resin tower – secondary concentrated brine tank – high-level tank.
One more question: during saline replacement, it should be done in counterflow, right?
It enters from the bottom of the resin tower and exits from the top, in order to loosen the resin during replacement.
In fact, during the design phase, the maximum flow rate considered is the normal maximum flow rate plus the amount required for displacement; therefore, there is no need to worry about production being affected by this displacement. The saline used for displacement comes from the brine pipeline at the outlet of the resin tower; the pump that is used to transport this saline is the same pump that is used for displacement. The displacement occurs from bottom to top; the resin becomes fluffy, and after resting, its distribution becomes more even.