Today, we will give a case study about double flange liquid level transmitter Diaphragm Corrosion Analysis Caused by Measuring Urea High Pressure Liquid Level
cases
Taking the fault handling of the double-flange liquid level transmitter for high-pressure urea liquid level measurement by CO2 stripping method in a factory as an example, it deeply analyzes the reasons for the corrosion of the diaphragm of the double-flange liquid level transmitter used for the liquid level measurement of the urea synthesis tower.
Introduction to working conditions
Synthesizing tower and stripping tower liquid level measurement double flange liquid level transmitter, the medium is high pressure urea solution, the temperature is 170 ℃, the pressure is 14.5MPa, and it is extremely corrosive to metals. For the first time, the plug-in double-flange capillary differential pressure liquid level gauge is used. In order to prevent the crystallization of the pressure taking port, it is equipped with a corresponding flushing ring and high-pressure flushing water pipeline. The double-flange liquid level transmitter uses 3051 series differential pressure transmission. The flange diaphragm is made of austenitic duplex stainless steel 2507.
