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Case history: New developments with lower catalyst-to-feed ratios for FCC units

机译：案例历史：FCC装置的催化剂进料比更低的新发展

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At Gazpromneft's Moscow refinery, the fluid catalytic cracking (FCC) unit had the potential to increase throughput with a catalyst-to-feed mass ratio of 4. A study was conducted using a series of FCC catalysts that included reduced rare-earth (RE) content and increased zeolite Y quantity systems. The goal of the catalyst study was to increase gasoline yield, along with greater yields of olefins (C3 and C4) from the FCC unit, as the catalyst-to-feed mass ratio was steadily reduced from 5.7 to 4.5. During this catalyst evaluation process, no extensive modernization of the existing FCC equipment was required. The main driver for the project was an informed effort to switch from RE catalysts due to rising prices for RE elements. In addition, the study evaluated options regarding zeolite Y modifications and possible zeolite-content increases while decreasing the RE content in the FCC catalyst. This optimization project focused on minimizing capital expenses while simultaneously increasing the unit throughput without changing the catalyst circulation rate.
机译：在俄罗斯天然气工业公司（Gazpromneft）的莫斯科炼油厂，流化催化裂化（FCC）装置的催化剂进料质量比为4时，有潜力提高产量。使用一系列FCC催化剂进行了研究，其中包括减少稀土（RE）含量和增加的沸石Y量系统。催化剂研究的目标是提高汽油的收率，并提高FCC装置中烯烃（C3和C4）的收率，因为催化剂与进料的质量比从5.7稳定降低到4.5。在该催化剂评估过程中，不需要对现有的FCC设备进行大规模的现代化改造。该项目的主要推动力是由于稀土元素价格上涨而做出了从稀土催化剂转向的知情努力。此外，该研究评估了有关沸石Y改性和可能增加沸石含量同时降低FCC催化剂中RE含量的选择。该优化项目的重点是最小化资本支出，同时在不改变催化剂循环速率的情况下提高单位产量。

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