Can the exhaust gas from vibrating fluidized bed drying be recovered?
Thread Content
The exhaust gas from the vibration fluidized bed drying process enters the water film dust collector directly through an exhaust fan; it is not possible to recover the solvent toluene. What methods exist for using this type of drying system to recover the toluene contained in the exhaust gas?
The dust removal water containing toluene is cooled before being fed into a liquid-liquid separator. Since the solubility of toluene in water is low, separation occurs based on density: the upper layer contains a solution rich in toluene, which can be reused directly in the system or from which toluene can be recovered through distillation. The dust removal water from the lower layer of the liquid-liquid separator is sent back to the water film dust collector for reuse.
As of now, I don’t think it’s been reported yet, but some factories have already started directing exhaust gases into water collectors in order to reduce ammonium sulfate particles.