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介绍了多变量模型预估控制技术应用于重油催化裂化装置时控制范围划分和控制目标 ,详细论述了反应再生系统的控制策略 ,包括再生器烧焦控制、提升管反应苛刻度控制、分馏塔底液位温度控制、压力平衡及阀位控制和收率极限控制等 5个子功能。工业实践表明采用该技术后关键工艺参数的控制明显改善 ,再生温度波动下降 5℃ ,转化率及产品分布波动也减小 ,从而提高了装置的转化率与轻质油收率。
The control range and control objectives of multivariable model predictive control technology when applied to heavy oil catalytic cracking unit are introduced. The control strategies of reaction regeneration system are discussed in detail. The control strategies include regenerator scorch control, riser reaction severity control, Liquid level temperature control, pressure balance and valve position control and yield limit control five sub-functions. The industrial practice shows that the control of the key process parameters is obviously improved after the adoption of the technology, the fluctuation of the regeneration temperature is decreased by 5 ° C, and the fluctuation of the conversion rate and product distribution is also reduced, thereby improving the conversion rate of the device and the yield of the light oil.