Accumulation and distribution of higher hydrocarbons in the pores of a cobalt catalyst during low-temperature Fischer–Tropsch fixed-bed synthesis,Catalysis Science & Technology

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Accumulation and distribution of higher hydrocarbons in the pores of a cobalt catalyst during low-temperature Fischer–Tropsch fixed-bed synthesis
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2021-08-12 , DOI: 10.1039/d1cy01305j
Lasse Schurm ₁ , Christoph Kern ₁ , Andreas Jess ₁

Affiliation

During low-temperature Fischer–Tropsch synthesis (FTS), the catalyst pores are filled with liquid hydrocarbons. In a fixed-bed reactor, axial concentration gradients are present in the gas phase (CO, H₂, evaporated hydrocarbons (HCs)). This leads to local (axial) changes of the composition of the liquid present in the pores and of the liquid phase trickling down the bed. A model based on the kinetics of the FTS, evaporation of HCs by external mass transfer, and vapor–liquid equilibrium was developed to describe the composition of both the gas and liquid phase at steady-state conditions. The influence of CO conversion and selected reaction parameters was investigated and compared with experiments in a single pellet string reactor.

中文翻译：

低温费-托固定床合成过程中钴催化剂孔隙中高级烃的积累和分布

在低温费-托合成 (FTS) 过程中，催化剂孔中充满了液态烃。在固定床反应器中，气相中存在轴向浓度梯度（CO、H ₂、蒸发的碳氢化合物 (HC)）。这导致存在于孔中的液体的组成和沿床滴下的液相的组成的局部（轴向）变化。开发了基于 FTS 动力学、通过外部传质蒸发 HC 和汽液平衡的模型，以描述稳态条件下气相和液相的组成。研究了 CO 转化率和所选反应参数的影响，并与在单个球团串反应器中的实验进行了比较。

更新日期：2021-08-17

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