What is tilting the head?
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The term “pi tóu” is often used in the chemical industry, but I’m not sure what it means. For example, turning the reactor over usually means opening it to replace the catalyst, but what does turning the pipelines over mean? The term “tilting the head” is also often used in the manufacturing process. Is there anyone experienced who can explain it? A brief explanation would be enough; it’s just to stimulate further discussion, hehe. Replies will be rated, thank you
During the production process, the catalyst bed in a fixed-bed reactor is prone to forming a layer on its upper surface due to the properties of the feed oil and various impurities. This leads to an increase in the occupied space within the catalyst bed, reducing its effective porosity and thus decreasing the flow area of the reactor. As a result, the pressure drop across the catalyst bed rises rapidly, posing a threat to the stable operation of the facility. “Catalyst skimming is a method of removing catalyst, also known as partial unloading, and is generally used in axial catalyst beds ； The common practice is to remove the deactivated catalyst from the upper part and then add new catalyst ； The catalyst at the bottom can also be placed on top, with the new one placed at the bottom.