What are the applications of defoamers during discharge

After the polymerization reaction is completed, the reacted slurry should be discharged to the discharge tank, and the unreacted VCM should be discharged. When the unreacted gas is discharged, a large amount of foam will be generated in the discharge chute. These foam will be discharged with the unreacted gas, which often causes many problems such as pipe blockage, material waste, etc. The use of water treatment defoamer can eliminate these foam.

The defoamer used in this process is usually added at the same time as the terminating agent by manufacturers. The selected defoamer should have a wide pH range, good defoaming performance, and optimal foam suppression performance, because for most small and medium-sized enterprises, the recovery of VCM monomers is not carried out using a distillation tower, and defoamers are not added during the recovery process, which takes a considerable amount of time. Therefore, the quality of defoamer foam suppression performance directly affects the speed and time of VCM monomer recovery. Defoamers are applied in this production stage. It shows good defoaming performance and foam inhibition performance, and can effectively eliminate and inhibit the production of foam in the whole recovery process.