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Scaling-up of instantaneous data of complex kinetics

机译：放大复杂动力学的瞬时数据

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Kinetic data related to complex mixtures of reactants and catalysts are necessary to simulate design and rate industrial chemical reactors. In the particular case of Fluidised-bed Catalytic Cracking, the main reaction takes place in riser reactors; whereas laboratory data are obtained in small fixed bed reactors. Even though this important difference in size and hydrodynamics, laboratory reactors are used to estimate, accurately, yield to products and apparent activation energies of the reactions proposed; however estimated frequency factors are very different from the ones observed at industrial reactors. In this work a scaling-up of frequency factors is performed, assuming that activation energies estimated in laboratory are correct. The adjusting effort is minimised because it is necessary to scale-up only one of the reaction rates and the rest of them are fitted proportionally to the first one. A 5-lump kinetic scheme for catalytic cracking of vacuum gas oils is used to test this approach; prediction obtained for industrial yields is very accurate.
机译：与反应物和催化剂的复杂混合物有关的动力学数据对于模拟工业化学反应器的设计和评估是必不可少的。在流化床催化裂化的特殊情况下，主要反应在提升管反应器中进行；而实验室数据是在小型固定床反应器中获得的。即使在大小和流体动力学上存在重要差异，实验室反应器仍可准确估算所提出的反应的产物收率和表观活化能。但是，估算的频率因数与在工业反应堆中观察到的频率因数有很大不同。在这项工作中，假设实验室中估计的活化能是正确的，则将频率因子按比例放大。调整工作量降至最低，因为仅需扩大其中一个反应速率，其余反应速率则与第一个反应速率成正比。一种用于真空瓦斯油催化裂化的5集动力学方案用于测试该方法。对工业产量的预测非常准确。

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