Methanol Weekly Topic: Why does the methanol catalyst bed overheat? 2015.07.27--08.02
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1. The main and auxiliary line valves are not opened properly, or the flow rate in the main line is high. 2. The circulation volume is too low. 3. Changes in gas composition. 4. The internal components of the synthesis tower are defective.
Catalyst overheating is usually caused by design issues. To address catalyst overheating, it is possible to reduce the temperature by increasing the circulation rate or the amount of cooling medium, as well as by lowering the pressure in the steam drum to enhance water circulation. Another approach is to modify the gas composition by increasing the proportion of inert gases and reducing the CO content; however, this comes at the cost of reduced production. Another solution is to lower the load