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Optimisation of operating conditions in batch for more sustainable continuous process transposition

机译:批量优化操作条件,以实现更可持续的连续过程转换

摘要

Implementation of exothermic and fast reactions requires a perfect temperature control to avoid thermal runaway and in most cases to limit by-products production. In order to fit with the heat removal capacity of common devices, expensive strategies are currently used to slow down this kind of reactions in order to avoid a strong temperature increase such as reactants dilution. Within the concept of process intensification, industries could move towards more sustainable process by reducing technology constraints to the benefit of chemistry. For that purpose, a two-step methodology is implemented. The first step consists in the optimisation of the operating conditions only based on stoichio-chemical scheme and kinetic laws. This is carried out by adjusting temperature profile and feeding rate strategy in a batch operation. Then a design for a continuous process is proposed, trying to approach the optimal batch operating conditions. This methodology is applied to the linear alkylbenzene sulfonation.
机译:放热和快速反应的实现要求完美的温度控制,以避免热失控,并且在大多数情况下,限制副产物的产生。为了适应普通装置的排热能力,目前使用昂贵的策略来减慢这种反应的速度,以避免强烈的温度升高,例如反应物稀释。在过程强化的概念内,工业可以通过减少技术约束以利于化学的发展而朝着更具可持续性的过程发展。为此,实施了两步方法。第一步在于仅基于化学化学方案和动力学定律优化运行条件。这可以通过在批处理操作中调整温度曲线和进料速率策略来执行。然后提出了一种连续过程的设计,试图接近最佳的批生产操作条件。该方法应用于线性烷基苯磺化。

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