Optimization Scheme for Improving the Operation Stability of Polypropylene High Pressure Propylene Recovery System
The polypropylene unit of PetroChina Dagang Petrochemical Company adopts the Basel Spheripol-II double-loop process technology.During the early operation process,there was a problem of unstable operation of the high-pressure propylene recovery system.This paper analyzes the factors affecting the fluctuation of the high-pressure propylene recovery system,and proposes optimization solutions from the aspects of polymer particle size distribution,T301 bottom discharge control,small flash line flow control,T301 liquid level control,T301 propylene reflux control,and small flash line temperature control,which have targetedly solved the bottleneck problem that restricts the long-term operation of the polypropylene unit.
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万方数据
维普
