关键词: 实时优化, 在线优化, 先进控制, 乙烯装置

Abstract: Ethylene production as an important basic industry plays an important role in national economy,petrochemical industry and industrial society,and maintains a booming trend in economic growth. But because of the overall technical level of ethylene production in China as well as complex raw material supply and other factors,China's current ethylene plant lags behind world's advanced level. In order to catch up with world advanced level,process automation and real-time optimization is essential. This paper describes real-time optimization development status and application of this technology in ethylene plant. Through implementation of real-time optimization system and establishment of a whole process mechanism model for ethylene plant,real-time tracking of production and on-line optimization can be realized to achieve the best economic operating point. In addition, oriented by prices of raw materials,products and utilities,automatic operation of the whole plant is performed to reduce human intervention in optimization and implementation. Through research and analysis of RTO technology,the goals of yield increase,energy saving and consumption reduction could be achieved.

Key words: real-time optimization, online optimization, advanced process control (APC), ethylene plant