A control scheme implementation for a fixed-bed Fischer–Tropsch synthesis (FTS) reactor using the optimal initial operating conditions at steady-state is developed. The proposed approach consists of solving a nonlinear constrained optimization problem for a fixed-bed FTS reactor with incorporation of a control scheme in the cooling jacket in order to find the optimal values of the initial operating conditions of temperature, gas-hourly space velocity (GHSV), pressure and coolant flow velocity under a steady-state regime that maximizes CO conversion and \({\mathrm{C}}_{5+}\) product selectivities. Such optimal operating conditions at steady-state are used to evaluate the dynamic behavior of the reactor under the proportional-integral control (PIC) scheme action that is implemented in the cooling jacket. An extended dynamic one-dimensional pseudohomogeneous model of a fixed-bed FTS reactor recently reported in the literature is used. The obtained results show the importance of the implementation of dynamic control strategies for the FTS carried out in a fixed-bed reactor, since they allow for ensuring the thermal control of such highly exothermic reactions and assure better reactor performance in terms of high CO conversion and liquid products selectivity (C₅₊).

开发了使用稳态下的最佳初始操作条件的固定床费托合成 (FTS) 反应器的控制方案实施。所提出的方法包括解决固定床 FTS 反应器的非线性约束优化问题，并在冷却夹套中加入控制方案，以便找到温度、气时空速 (GHSV) 的初始操作条件的最佳值)、压力和冷却剂流速在稳态条件下最大化 CO 转化率和\({\mathrm{C}}_{5+}\)产品选择性。这种稳态下的最佳运行条件用于评估反应器在冷却夹套中实施的比例积分控制 (PIC) 方案作用下的动态行为。使用最近在文献中报道的固定床 FTS 反应器的扩展动态一维拟均质模型。获得的结果显示了在固定床反应器中进行 FTS 动态控制策略的重要性，因为它们允许确保对这种高放热反应的热控制，并确保在高 CO 转化率和液体产品选择性（C ₅₊）。