Abstract Fischer-Tropsch synthesis performance in vertical, inclined and oscillating trickle-bed reactors for offshore floating applications was examined via a complex dynamic three-dimensional multiphase model based on volume-averaged mass, momentum, and species balance equations in liquid and gas phases and simultaneous diffusion and chemical reactions within the catalyst. Angular sinusoidal oscillatory motion of the trickle-bed reactor between vertical and an inclined position and between two inclined symmetrical/asymmetrical positions was examined. The behavior of inclined and oscillating Fischer-Tropsch trickle-bed reactors is atypical because the reactants in the main reactions originate from the gas phase and because a fraction of useful CO can be redirected in water gas-shift reaction. The performance of Fischer-Tropsch synthesis in the presence of water-gas shift reaction increases slightly with amplification of packed bed inclination even if the distortion of axial symmetry of liquid holdup and axial velocity radial distributions becomes considerable. Also, in asymmetric oscillating trickle-bed reactors the performance of Fischer-Tropsch synthesis is slightly improved. This enhancement is maximal for the reactor moving between vertical and an inclined position when the time-dependent waves of CO and H2 conversion develop around the steady-state solution of the middle inclination angle. The oscillatory Fischer-Tropsch performance moves towards the steady-state solution of the vertical state when the asymmetry between two inclined positions diminishes. Symmetric oscillating trickle-bed reactors generate an oscillatory Fischer-Tropsch performance around the steady-state solution of vertical state which is affected by the angular motion parameters of the reactor.

中文翻译：

---

用于海上漂浮应用的垂直、倾斜和振荡滴流床反应器中的费-托合成

摘要 通过基于液相和气相的体积平均质量、动量和物种平衡方程的复杂动态三维多相模型，研究了用于海上漂浮应用的垂直、倾斜和振荡滴流床反应器中的费托合成性能。催化剂内同时发生扩散和化学反应。检查了滴流床反应器在垂直和倾斜位置之间以及两个倾斜对称/不对称位置之间的角正弦振荡运动。倾斜和振荡的费托滴流床反应器的行为是非典型的，因为主要反应中的反应物来自气相，而且一部分有用的 CO 可以在水煤气变换反应中重新定向。费托合成在水煤气变换反应存在下的性能随着填充床倾角的放大而略微增加，即使持液率和轴向速度径向分布的轴对称畸变变得相当大。此外，在不对称振荡滴流床反应器中，Fischer-Tropsch 合成的性能略有提高。当 CO 和 H2 转化的时间相关波围绕中间倾角的稳态解发展时，这种增强对于在垂直和倾斜位置之间移动的反应器来说是最大的。当两个倾斜位置之间的不对称性减小时，振荡的费托性能向垂直状态的稳态解移动。