Methanol water separation tower problem
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Does the methanol-water separation tower need to be equipped with an alkali adding device in the current low-temperature methanol washing process? Some devices have it, and some don't? What is the effect of adding alkali?
The main function of adding alkali is to remove acidic substances HCN, methanol oil, etc. in methanol, prevent corrosion, and reduce the corrosion rate of the reboiler at the bottom of the methanol-water separation tower! !
Agree with what you said above. Usually it is necessary to add-----
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After the system has been running for a period of time, the methanol in the system will become acidic...In order to protect the equipment, alkali solution must be added...
Do I need to add alkali? Our process is Lurgi's process, and there is no process design for adding alkali! In the alkali adding process, should alkali be added continuously or intermittently? What is the concentration of alkali added and what are the control indicators? I hope experienced friends can discuss it! Also learn from the experts * one time!
I heard that when they were introduced in the past, they were added at first, but now they are mostly not added.