In the context of the emerging multizone circulating reactor (MZCR) operating with gas–solid phases, maintaining pressure balance is crucial for both reactor stability and achieving intended product quality. In this study, the method of moments, reactor model and pressure balance model are coupled to model and analyze an entire process flow for propylene (co)polymerization, which integrates a pre-polymerization tubular loop reactor (TLR) with a main polymerization MZCR. The modeling results unveil the relevance of pre-polymerization in the entire MZC process flow. Additionally, the influence of typical operating parameters on both the pressure stability and copolymer properties is investigated. To further visually identify the pressure-stable boundary of the MZCR, a method based on analyzing the pressure balance loop is proposed. The current study has illustrated the variation trends of pressure drops and product properties under typical operating conditions, identifying an operational range essential for reactor safety.

中文翻译：

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集成管式环流反应器和 MZCR 聚丙烯共聚物性能和压力稳定性的建模和分析


在新兴的气固相多区循环反应器 (MZCR) 中，保持压力平衡对于反应器稳定性和实现预期产品质量至关重要。在本研究中，将矩量法、反应器模型和压力平衡模型耦合起来，对丙烯（共）聚合的整个工艺流程进行建模和分析，该工艺流程集成了预聚合管式环流反应器（TLR）和主聚合MZCR。建模结果揭示了预聚合在整个 MZC 工艺流程中的相关性。此外，还研究了典型操作参数对压力稳定性和共聚物性能的影响。为了进一步直观地识别MZCR的压力稳定边界，提出了一种基于分析压力平衡回路的方法。目前的研究阐明了典型操作条件下压降和产品性能的变化趋势，确定了反应堆安全所必需的操作范围。