Seeking advice
Thread Content
The formaldehyde tank level gauge in our facility is of the single-flange type, and it has been fluctuating frequently recently. Upon inspection, it was found that there was a large amount of crystalline material in the tank; the problem was resolved after tapping on the flange. How can this issue be completely solved? I’m asking for help from everyone.
If the crystallization is caused by precipitation at low temperatures, considering the use of a heat tracing wire or adding a flushing ring for regular cleaning could be effective solutions. Non-contact measurement methods such as radar and ultrasound can also be used.
Add a flushing ring and adjust the flushing flow rate for the upper and lower flanges
Replace it with a different type of level gauge. Radar, ultrasound, and so on.
Try turning the valve in front of the diaphragm box on and off more times.
The higher temperature now is probably not caused by low temperatures. Could it be that the concentration of the product is higher than before? If that’s not the case, check whether it’s necessary to clean out the deposits at the bottom of the tank. As for what to replace the radar with, ultrasound? It’s simply beyond words.
The tank is at atmospheric pressure, and the process does not allow shutdown for tank cleaning; is it feasible to install electric heating at the liquid connection stub?