Catalyst loading scheme (regarding ceramic balls)

The last edit to this post was made by adsl121 on 2010-3-17 at 23:04. The amount of ceramic balls used as catalysts is determined based on the height of the reactor. Generally, two types of ceramic balls are used: those with a larger diameter (2.5 cm) are placed at the bottom, while those with a smaller diameter (1.2 cm) are used above them. Then there is the catalyst layer, and usually a secondary ball is also added at the end. This can extend the catalyst's service life. Active participation. I’m sorry, I didn’t measure it either. Hehe

This post was last edited by adsl121 on 2010-3-17 23:04: 3-5cm ceramic balls? Is it too big? We usually install two layers of ceramic balls on top and bottom. The bottom layer is fitted with φ25, followed by φ12. In the upper layer, it is the opposite: first φ12 is installed, followed by φ25; the height of each layer is 100 mm.

Our units usually have two layers of ceramic balls installed above and below the catalyst, both layers using φ16 ceramic balls!

So, what is the mesh size of the screen on the plate inside your reactor? It’s likely determined by that mesh size.

The screen is there to prevent the balls from falling. After installing the catalyst, ceramic balls are added, usually with a diameter of 100 mm; they serve to distribute the gas and keep the catalyst in place so that it isn’t blown away by the airflow.

Both the top and bottom of the catalyst should be fitted with ceramic balls. The size of these ceramic balls should be determined based on the dimensions of the catalyst and the reaction tube; generally, they should be slightly larger than the catalyst itself

We haven’t installed ceramic balls on top of the reactor, which affects the temperature in the upper layer; it is recommended to add a layer of ceramic balls there

Hello, we are a factory that produces ceramic ball fillers. We heard that your company has a need for this type of product, so we reached out to you. Thank you.

Regarding the selection of the size of inert ceramic balls, it should be determined based on the size of the catalysts. Generally, the 2X rule (or grading principle) is followed: the diameter of the ceramic balls should be twice that of the adjacent catalysts. This ensures the most even distribution of the flow, minimizes pressure drop, and optimizes the reactor performance. For example, if the diameter of the catalyst is 1/16'', the selection and packing of the ceramic balls are as follows: 1/2'' inert ceramic balls, 1/4'' inert ceramic balls, 1/8'' inert ceramic balls, 1/16'' catalyst, 1/8'' inert ceramic balls, 1/4'' inert ceramic balls, 1/2'' inert ceramic balls. 100–150 millimeters of ceramic balls are packed in each layer

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