The solid material at the bottom of the vacuum distillation vessel adheres to the walls and cannot be cleaned thoroughly
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I have a question for everyone: Before performing vacuum distillation on my product, in order to reduce its acid value, I added about 6% solid soda ash to the crude product. Since the distillation takes place under vacuum in a reactor, solids remain attached to the inner walls of the reactor after distillation; washing these solids with water requires a large amount of water, which results in a significant amount of saline wastewater and poses environmental challenges. I was wondering if there are any good devices that can allow the solids at the bottom of the tank to be obtained with little or no water used (I heard that rake dryers work well; I’ve never used one, so I don’t know much about them.)
If your distillation tower or reactor is equipped with agitation, wall scraping can be used to address such issues; if not, a cleaning port can be installed to solve the problem
I use a reaction kettle for vacuum distillation; since the distillation temperature reaches 200 degrees, the salts formed settle at the bottom of the kettle, and the stirrer cannot reach that area. Adding water for cleaning requires a large amount of water. The reason I add solid alkali to the crude product is to avoid the generation of large amounts of wastewater during the process.
This post was last edited by Lantian on 2018-6-12 at 16:25. If possible, it should be changed to stirring; cleaning the walls is also necessary during stirring. If you’re interested, feel free to call me for more details! 13093022738 Engineer Xu