Are there new methods for demulsifying coal tar?
Thread Content
The dehydration of coal tar is the first step in its processing. The safety of tar processing, the maintenance of various process parameters within acceptable ranges, and the yields of different fractions are all related to tar dehydration. However, in addition to the traditional method of heating the tar to around 90 degrees Celsius and then allowing it to stand for more than 36 hours to facilitate dehydration, centrifugal separators can also be used for separation. What other effective methods exist for dehydrating coal tar, especially in cases where it is emulsified? Let’s discuss this
Yes, just add some chemical agents~ After adding them, it will separate into 3 layers: the top layer is oil, the middle layer contains the chemical agent, and the bottom layer is water. Then, just add water to the washing system. As for what kind of agents they are, you’ll need to look that up; I’ve forgotten too. It’s something that can separate water from oil – find the molecular formula for that substance
No additives are allowed, as it will affect the quality of the asphalt. Abroad, there is pressure-driven dehydration; it’s actually also a form of static dehydration, only with a shorter duration
Adding demulsifiers affects tar distillation
Yes, on the one hand it affects tar distillation, and on the other hand it impacts product quality as well
Heating can break emulsions, and ultrasound can also effectively break them!
Original poster, we specialize in demulsifiers and also offer services for demulsifying coal tar; you might want to give it a try