Process Section – Daily Hydrogenation Process Knowledge Question No. 010
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Why cannot the activity of the catalyst be fully restored after regeneration? After hydrogenation catalyst regeneration, metal aggregation leads to a decrease in the number of active centers and a reduction in the crystallinity of the zeolite, resulting in lower acidity. Additionally, the zeolite structure changes during regeneration, and only about 80% of its activity can be restored after secondary sulfidization.
After hydrogenation catalyst regeneration, metal aggregation leads to a decrease in the number of active centers and a reduction in the crystallinity of the zeolite, resulting in lower acidity. Additionally, the zeolite structure changes during regeneration, and only about 80% of its activity can be restored after secondary sulfidization.
After the hydrogenation catalyst is regenerated, metal aggregation leads to a decrease in the number of active centers, as well as a reduction in the crystallinity of the zeolite, which results in a lower acidity. Additionally, the zeolite structure changes during the regeneration process, and after secondary sulfidization, only about 80% of the original activity can be restored.
(1) A blocked pore channel cannot be completely cleaned. (2) As the device operates, some active components are inevitably lost.
After the hydrogenation catalyst is regenerated, metal aggregation leads to a decrease in the number of active centers and a reduction in the crystallinity of the zeolite, resulting in lower acidity. Additionally, the zeolite structure changes during regeneration, and after secondary sulfidization, only about 80% of its activity can be restored.
After the hydrogenation catalyst is regenerated, metal aggregation leads to a decrease in the number of active centers, as well as a reduction in the crystallinity of the zeolite, which results in a lower acidity. Additionally, the zeolite structure changes during regeneration, and after secondary sulfidization, only about 80% of its original activity can be restored
1. During use, the pore structure of the carrier changes. 2. The dispersion of active ingredients has decreased significantly. 3. Irreversible poisoning occurs as a result of interaction with toxic substances.
(1) A blocked pore channel cannot be completely cleaned. (2) As the device operates, some active components are inevitably lost.
After hydrogenation catalyst regeneration, metal aggregation leads to a decrease in the number of active centers and a reduction in the crystallinity of the zeolite, resulting in lower acidity. Additionally, the zeolite structure changes during regeneration, and only about 80% of its activity can be restored after secondary sulfidization.
After hydrogenation catalyst regeneration, metal aggregation leads to a decrease in the number of active centers and a reduction in the crystallinity of the zeolite, resulting in lower acidity. Additionally, the zeolite structure changes during regeneration, and only about 80% of its activity can be restored after secondary sulfidization.
Based on experience with catalyst regeneration, heating regeneration can only restore activity to 80-90%, as carbon deposition is just one of the factors that cause deactivation. Only through catalyst regeneration treatment can the activity be restored to over 95%.