Level measurement problem
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Which colleague knows what method is used to measure the liquid level in a chloromethane reaction vessel? Because the reaction of the materials involves hydrogen chloride gas and methanol gas, which, under the action of a zinc chloride catalyst, produce chloromethane gas, along with foam formation ； It is necessary to know the liquid level including the foam. Has it been used for stable measurements? Thank you!
RF admittance level gauges can be used for foam measurement as well.
This is used to measure the foam level, not the liquid level! It’s not for measuring liquid level! It’s not for measuring liquid level!
The RF admittance meter is equipped with a foam switch, but this is due to unstable gas-phase composition in the reactor; it is likely that this results in inaccurate readings from the foam switch and unstable alarms. Even if calibration is performed daily, it may not be sufficient. .
Thank you! When the materials in the reactor react, foam is generated. To prevent this foam from being carried away with the gas, it is necessary to know its location; in other words, the liquid level that needs to be measured includes the thickness of the foam
There has never been a way to measure foam. There was once a case involving heating and stirring, with radar being used to measure the liquid level. When the temperature was below 90 degrees, although there was some foam present, the radar could still function properly. However, when the temperature exceeded 90 degrees, a large amount of foam was generated, which caused the radar to lose its signal and become unable to function correctly
Our on-site response showed foam forming on the upper layer; we used the e+h radar model FMR52-BAACCBBPCJK+AK, and it worked well. The foam contained oil, and the temperature was over 100 degrees. I’m not sure if this information is useful to you
Thank you! Is yours a chloromethane reactor?
No, it does not contain hydrogen-containing components; if hydrogen-containing components are present in the form of hydrogen gas, attention must be paid to the issue of hydrogen embrittlement when making a selection