Abstract

A mathematical model for the atmospheric residue desulfurization (ARDS) process was used to estimate the deactivation parameters for the hydrodesulfurization (HDS) and hydrodemetalation (HDM) reactions. These parameters, namely Thiele moduli and contact efficiency, were assessed for three commercial ARDS catalyst systems and three atmospheric residues. The model’s deactivation parameters were validated with the literature, even though the model’s structure did not explicitly model these free parameters mathematically. It was demonstrated that the Thiele modulus had a positive correlation with the pore volume of the fresh catalyst and a negative correlation with its bulk density for the HDS reaction. The lighter feed, in comparison to the other feeds, contacted the catalysts more efficiently under the current operating conditions. Metal removal depended on the catalyst pore structure, and vanadium removal seemed to be controlled by diffusion.

摘要

常压渣油脱硫 (ARDS) 过程的数学模型用于估计加氢脱硫 (HDS) 和加氢脱金属 (HDM) 反应的失活参数。这些参数，即蒂勒模量和接触效率，是针对三种商业 ARDS 催化剂系统和三种常压残留物进行评估的。该模型的失活参数通过文献进行了验证，即使该模型的结构没有明确地对这些自由参数进行数学建模。结果表明，蒂勒模量与新鲜催化剂的孔体积呈正相关，与 HDS 反应的堆积密度呈负相关。与其他进料相比，较轻的进料在当前操作条件下更有效地接触催化剂。