How can the temperature of the alkylation reaction be controlled to remain stable?
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Dear seniors, how can the temperature of the alkylation reaction be controlled to remain stable? If the reaction temperature becomes unstable, can adjusting the output from the light ends distillation column quickly stabilize it?
First, it is necessary to ensure a stable feed supply, as well as stability in the various factors that affect the reaction temperature
Just control the butene concentration and the alkene-to-olefin ratio
The bottom product from the light-end removal tower isn’t the key factor – what about the recycled isobutane?
Temperature control factor: Compression mechanism cooling capacity control, via a control valve； Stable control of reaction heat: the alkane to hydrocarbon ratio must be stable, and the acid to hydrocarbon ratio must also be stable. Keep the stirring speed constant and maintain a steady feed rate. The isobutane concentration must be kept stable. System cleaning is carried out through Tower 4 and Tower 5 to ensure both the isobutane concentration and the impurity level. The feed temperature also needs to be stable; it is essential that all these systems remain stable, as well as the reactor temperature.
The alkylation temperature isn’t as difficult to control as expected; with a stable raw material ratio provided by the tank area, along with stable circulating isobutane and refrigerant, there will be no significant fluctuations. By adding or removing C4 raw material, it is possible to control the temperature; however, it is best to make fine adjustments by controlling the cold metering. Reduce the amplitude of fluctuations.