After more than half a year of hard work, on October 25, Sichuan Petrochemical's 800,000 tons/year ethylene plant APC project was officially put into operation.
The operation of APC system has five functions. One is to improve the consistency of product quality, and the standard deviation of main operating parameters is reduced by more than 30%. The second is to achieve smooth control of the device and effectively control the ethylene loss at the top of the tower. The third is to optimize product distribution. , to reduce processing losses, improve the yield and quality of the main products of the device; Fourth, optimize the operation of the device to reduce energy consumption; Fifth, improve the automation level of the device and reduce the labor intensity of the operator.
The APC project of Sichuan Petrochemical Ethylene Plant was launched in May 2018. The accumulated collection number was nearly 10,000 points, more than 80 PID circuits were set up, and 13 design and development controllers were developed. During the construction of the project, a “pre-test report” was also formed. A series of technical documents such as the step test report "Detailed Design Plan", "DCS Logic Configuration and Bottom Installation Plan" laid the foundation for the successful operation of the APC system.