Polymerization kettle discharging problem
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This post was last edited by sunjl1981 on 2013-1-6 23:29. If the reaction is over, the terminator is also used. But what will happen if the material cannot be discharged for some reason and the waiting time is relatively long? Does it have any impact on the slurry quality? # , , &
Generally, product quality will not be affected by maintaining normal stirring speed.
Lower the temperature of the polymerization kettle! Otherwise the whiteness will decrease! Add the terminator appropriately
The temperature of the polymerization tank is generally lowered to below 45 degrees, and the stirring speed should be reduced to ensure that the slurry does not settle. As long as you wait no more than 8 hours or the vc is completely recovered, there is no need to add more terminator.
The stirring should be turned on regularly, otherwise the material will easily agglomerate and settle! Reduce the flow rate of the bottom water to prevent the pot from filling up! If the discharging time is too long, it will affect the whiteness, thermal stability, and fish-eye degree of the resin! As for the next air stripping process, it is more difficult to control the process operation compared to the normally discharged material!
Will affect the original whiteness and thermal stability of the resin
Keeping stirring will not affect the quality of the product, but be careful to fill the pot