How to deal with blockages in the bottom product draw of the formaldehyde stripping tower
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The mixture of formaldehyde, methanol, propargyl alcohol, and water is fed into a distillation tower for distillation; the product obtained at the bottom of the tower is dilute formaldehyde. However, some dialdehydes condense inside the tower as well as at its bottom, often causing blockages in the pipelines and the heat exchangers at the bottom of the tower. What should be done to address this issue without disrupting production? Currently, we simply inject process water in reverse from the bottom of the tower when there is a blockage, but this approach is not very effective. This has led to an increase in the number of maintenance tasks; I’m reaching out to everyone for help
Changing the quality of water makes tap water prone to reacting and forming scale
Distillation systems use deionized water, not tap water
Was it analyzed to find out what substance was causing the blockage?
A reaction occurred; the bisacetal was likely formed as a result of the reaction between acryol and formaldehyde
The material contains propargyl alcohol; so how should these dialdehydes be removed? In the past, we had to stop the process and disassemble it in order to carry out cleaning
The requirements for the reaction conditions are so low; I can’t understand it