Low-temperature liquid level measurement for low-temperature methanol washing and purification process
Thread Content
The cracked gas purification and desulfurization in our plant adopts the low-temperature methanol washing and purification process of Germany's Linde Company, and the liquid level measurement uses a float level gauge. Because the process equipment being measured is high and the float is too bulky and maintenance is very troublesome and dangerous, we want to use a double flange transmitter to measure the liquid level of low-temperature methanol in the expansion project. Due to the lack of experience in this area, we are here to ask for your advice. We hope that experts can give you advice. The approximate parameters are as follows: Pressure 0.4～3.0Mpa Temperature: -70～-10℃. There are dozens of units. Thank you all!
You can use a double flange transmitter to measure the liquid level of low-temperature methanol. Your measurement conditions are not too harsh and the medium: Pressure 0.4～3.0Mpa Temperature: -70~-10℃, double flange differential pressure transmitter can fully meet the requirement. It is best to choose internationally renowned brands such as: Rosemount, ABB, Siemens, E+H, the products of these manufacturers are all OK, of course EJA's are also OK, but I don't recommend using the products from Little Japan. There are so many good brands, why should I choose the ones from Little Japan?
Linde’s acid removal process is widely applicable!
Thank you to the two people above. The general double-flange differential isolation fluid can only withstand -40°C, and 3051 can withstand -70°C. However, I have not seen any application reports in this area, and I dare not act rashly, so I am here to ask for your advice. Colleagues with application experience in this area would like to thank you for your support! :handshake
3051 can withstand -73℃, your process temperature is the temperature: -70～-10℃, can the card edge be used?
I think 3051 double flange should be available, and the -73°C given by ROSEMOUNT should be a conservative temperature limit. But there is another issue that needs to be considered, which is the serious issue? When production is abnormal or the medium temperature changes during the initial start-up, the medium weight will be affected, which will affect the accuracy of the measurement. An application example is now required.
The oil-filled part will also produce differential pressure, which needs to be adjusted to zero.