Looking for information on the process control of polyethylene gas-phase fluidized bed technology
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It’s not information on polymerization processes, but rather details regarding the operating principles of fluidized bed processes: Q
There is a great deal to cover regarding the operational principles of fluidized bed processes; it would be better to be more specific, such as whether control is based on the gas phase or temperature, bed height control, gas flow rate control, yield control, and so on. The scope of these aspects is very wide, and trying to address everything at once would be quite difficult. I think you can ask specific questions about those points you don’t understand, which will make it easier to provide answers!
Lift the oil pump. Let’s discuss some clever tips or practical experience regarding the temperature control of fluidized beds.
Reply to 3# fastrong: Let me share my experience: 1) There are many ways to control the bed height, such as parameters like the density of the material on the top and bottom, as well as the weight of the bed. In particular, the change in temperature in the expansion section can directly reflect whether the bed height control is appropriate, whether it is too high or too low. 2) The apparent gas flow rate can be assessed to determine whether it is appropriate by considering changes in bulk density, temperature at the bottom of the reactor, opening degrees of the hot and cold water valves in the heat exchanger, as well as changes in bed height and weight. 3) Control of the reaction temperature is carried out by comparing the instantaneous and average powder bonding temperature with the compressor outlet temperature