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A Large Scale Cold Flow Model of FCC - Troubleshooting Tool for Commercial Units

机译：FCC的大型冷流模型-商业单位的故障排除工具

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摘要

The operational performance of a commercial Fluid Catalytic Cracker unit involves complex interactions between the various sub-systems in the reactor-regenerator section. The hardware designs of these sub-systems have undergone several innovations and modifications primarily to meet the challenges in terms of meeting environmental limits, increasing uplift on heavy feedstock and improving energy efficiency. In order to take advantage of these improvements in FCC technology, revamp/retrofit activities are being carried out in many commercial units. Moreover, for deriving maximum benefits, refiners continue to operate FCC units even beyond their design capacities thus affecting the performance of key hardware sub-systems in the reactor-regenerator section. Some of the common problems faced by the FCC units today are high catalyst losses from both the reactor, as well as regenerator; higher regenerator dense bed temperatures; high hydrogen in coke; bottoms circuit choking, etc. besides the catalyst circulation problems. For troubleshooting these operating problems of commercial units, a cold flow model facility provides a better understanding of the fluid-particle interactions of subject hardware system for carrying out the complete analysis and helps in providing effective solutions.
机译：商用流体催化裂化装置的运行性能涉及反应器-再生器部分中各个子系统之间的复杂相互作用。这些子系统的硬件设计已经进行了几项创新和修改，主要是为了满足以下挑战：满足环境限制，增加重质原料的提量和提高能源效率。为了利用FCC技术的这些改进，许多商业单位都在进行改造/改装活动。此外，为了获得最大的利益，精炼厂将继续使用FCC装置，甚至超出其设计能力，从而影响反应堆-再生器部分中关键硬件子系统的性能。如今，FCC装置面临的一些常见问题是反应器和再生器的催化剂损失很高。较高的蓄热器密相床温度;焦炭中氢含量高;除催化剂循环问题外，还会使塔底回路阻塞等。为了对商用单元的这些操作问题进行故障诊断，冷流模型设施可以更好地理解主题硬件系统的流体-颗粒相互作用，以进行完整的分析，并有助于提供有效的解决方案。

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