Why does the main inlet valve of the ammonia synthesis tower need a mechanical limit?
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Why does the main inlet valve of the ammonia synthesis tower need a mechanical limit? There is a limit during the catalyst heating reduction process, and this limit is adjusted to zero at the end of the reduction. Are there any special security requirements? Having a limit also results in a low temperature of the gas entering the tower, preventing further heating and reduction – so why go through that?
I might be uninformed; I’ve neither heard of it nor seen it
Prevent accidental operations. Cassali’s process package?
When the temperature rises, some cold air needs to flow through the main pipeline: firstly to cool the walls of the cooling tower, secondly to reduce the pressure difference in the tower, and thirdly to regulate the temperature； To prevent forgetting to open the main valve during operation, a certain limit is maintained. Lao Sun, how’s things on your end?
The main purpose of the main valve limit in the synthesis tower is to cool the tower walls, preventing overheating of the outer walls due to the absence of flow. The operation manual specifies clear requirements for the outer wall temperature and the temperature difference of the outer wall!