How to determine sticking to the pan? 70.5 cubic meters: What is the cleaning cycle time for the tank?
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In production, how can one determine if sticking to the pot has occurred? When is it necessary to clean? What is the typical cleaning cycle?
I’m not sure what the temperature of the circulating water is like for you. When our 70-cubic-meter tank was first put into use, its heat exchange performance was fine. However, after three years of use, problems such as excessive temperatures occurred frequently due to the high temperature of the circulating water. After cleaning the tank, the performance improved significantly. We basically do it once a year now, using high pressure
In normal production, what problems can severe sticking to the reactor walls cause?
Resin sticking to the reactor can cause explosive polymerization and the formation of fish-eye defects. It also prevents the reactor temperature from dropping, thereby prolonging the production cycle and reducing the efficiency of equipment use. To determine whether the reactor is stuck or not, one can check the water flow rate on the computer, as well as the time it takes for the reactor to respond, and compare these values with those of other reactors. It is roughly possible to determine whether it is sticking to the pot.
The most direct method is to open the pot lid and check whether the pot walls are clean; if they are clean, there will be no sticking, but if they are not clean, sticking will occur.
Reply to 5# 45305446: If we have to open the manhole of the polymerization reactor every time before feeding material, it would be very troublesome, time-consuming, and would reduce production efficiency.
Reply to 6# fumiao0710: Check by opening the cover at regular intervals to understand the basic patterns of sticking to the reactor wall; generally, this should be done once a year.
Can we determine whether sticking to the tank has occurred by using the stirring power?
1. It can be determined by changes in the opening degree and flow rate of the circulating water valve; sticking to the reactor inevitably leads to a decrease in the heat transfer capacity of the polymerization reactor, so the opening degree of the circulating water is gradually increased. 2. After sticking to the reactor wall, a large amount of plasticizer is generated; by observing through the discharge filter, it is possible to assess the amount of plasticizer inside the reactor. If discharge blockages occur frequently, it indicates severe sticking to the reactor wall.
It can be determined by checking the mixing power to see if there is any blockage in the discharge pump filter during discharge, by checking whether there are plasticized fragments in the polymer slurry before feeding it into the next reactor, and by observing the condition of those plasticized fragments during the stripping process when the liquid is discharged
For those plastic blocks produced in kettles, do you operate in a continuous or batch mode? Regardless of the production mode, it’s possible to determine the situation by checking the mixing power and whether there is any blockage in the discharge pump filter during discharge. Do you have sight glasses? It seems that this is necessary; without it, it’s not possible to see the discharge speed during unloading. If this can be monitored, then it’s possible to determine whether sticking to the tank has occurred based on the speed of discharge. If the discharge speed is slower than that of the previous batch, action must be taken immediately. This is just experience-based advice; I hope it can be useful to you.