Online concentration meter to measure the concentration of lime milk
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I’m begging for help: the concentration of lime milk is around 15%; I want to carry out this process online. Is there any equipment that can be used for this?
Look for it online; it seems there are manufacturers that can produce it
This post was last edited by qqgd on 2025-9-7 at 20:57. The lime milk used by the original poster is likely intended for preparing a solution to absorb fluorine-containing exhaust gases, and the concentration of this solution does not need to be extremely precise. Additionally, a mixing device should be installed in the tank for lime milk to maintain a roughly uniform suspension. Or, under process conditions similar to those I mentioned, the density method can be used for online concentration measurement, as there is a good correlation between the density of lime milk and its concentration. An ultrasonic density meter can be used, or the density can be determined by measuring the differential pressure at a fixed liquid level. Vibration-type density meters with small pipe diameters are not recommended, as lime milk may settle inside the measurement tube in the absence of sufficient mixing, leading to measurement errors or even preventing accurate readings. Care should be taken to minimize carbon dioxide absorption in the storage tank for lime milk, as the entry of carbon dioxide can lead to the formation of insoluble calcium carbonate deposits, which cause such deposits on the surface of the sensing elements and thus affect the accuracy of measurements as well as lead to contamination of those surfaces.
The concentration of the lime slurry is around 15%. An online measurement method is desired; however, the sample condition and measurement accuracy are unclear. It isn’t very difficult, as chemical analysis is an easy approach. But for speed, using density might be a better option. It would be best to provide a bit more sample information.
The measurement accuracy is not high. Since lime milk is a suspension, chemical methods cannot be used. With the density method, the lime milk solution can clog the instruments, making it difficult to proceed
If it is actually done, manual analysis in the laboratory is not difficult; as for online analysis, it depends on the specific requirements. Theoretically, most manual analysis methods can be improved to become automated, unmanned online analysis.
The online ultrasound principle can be used.