distillation tower
Thread Content
After being in use for a period of time, the separation efficiency of the distillation column in our factory declines. We generally clean the packing inside the distillation column by performing a column cleaning process. I wonder if any of you friends from Sichuan have any better methods.
Each tower is designed based on its own products, and the number of trays in it also varies. Controlling the temperature points is very important. The tower we use is both a distillation tower and a rectification tower. Regular cleaning is normal; we usually clean it every 4 or 5 months.
A decrease in the distillation efficiency of the distillation column means that there is severe overlap among the products. The ideal level of vacuum separation should be achieved; I’m not sure if there’s an issue with the design itself. Generally, when the column needs to be cleaned frequently, it’s usually due to salt or dirt buildup on the packing or trays, right? If the crude oil has a high salt content, it’s obvious that the desalination process for the crude oil isn’t effective; check the electrodesalination unit. We usually refer to this process as salt washing, not boiling tower treatment. I think the packing could be replaced with tray plates; since you want a good distillation effect, tray plates would definitely be more suitable.
Either there is a problem with the design or there is a problem with the operation. Based on the experience of large manufacturers, the tower is inspected every 2 years, which includes cleaning the tower or taking out the tray sections to clean them outside. In some cases, it is also repaired once a year.
If there is no possibility of self-polymerization of the material, it is advisable to add a feed heat exchanger to raise the feed temperature and reduce the load on the stripping section
First, rule out the raw materials: are they similar to those specified in the design, and has there been an increase in solid or easily condensing impurities? Is the design of the tower itself reasonable? When dealing with materials that are prone to solidification and have high viscosity, fillers are generally not used. However, it’s not possible to switch to a plate tower later on. There are also operational issues: could improper control of temperature and pressure be causing side reactions? Generally, it’s the raw materials that are the problem