The FCC riser cracks gas oil into useful fuels such as gasoline, diesel and some lighter products such as ethylene and propylene, which are major building blocks for the polyethylene and polypropylene production. The production objective of the riser is usually the maximization of gasoline and diesel, but it can also be to maximize propylene. The optimization and parameter estimation of a six-lumped catalytic cracking reaction of gas oil in FCC is carried out to maximize the yield of propylene using an optimisation framework developed in gPROMS software 5.0 by optimizing mass flow rates and temperatures of catalyst and gas oil. The optimal values of 290.8 kg/s mass flow rate of catalyst and 53.4 kg/s mass flow rate of gas oil were obtained as propylene yield is maximized to give 8.95 wt%. When compared with the base case simulation value of 4.59 wt% propylene yield, the maximized propylene yield is increased by 95%.

中文翻译：

---

工业FCC装置中丙烯的最大化

FCC立管将瓦斯油裂解成有用的燃料，例如汽油，柴油和一些较轻的产品，例如乙烯和丙烯，它们是生产聚乙烯和聚丙烯的主要基石。提升管的生产目标通常是使汽油和柴油最大化，但也可能是使丙烯最大化。使用gPROMS软件5.0中开发的优化框架，通过优化催化剂和瓦斯油的质量流量和温度，对FCC中瓦斯油的六集总催化裂化反应进行了优化和参数估计，以最大程度地提高丙烯的收率。当丙烯产率最大化以得到8.95wt％时，获得了催化剂的质量流量290.8kg / s和瓦斯油的质量流量53.4kg / s的最佳值。与基本案例模拟值4相比时。