What are the reasons for the short service life of methanol catalysts?
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What are the reasons for the short service life of methanol catalysts? 1. Thermal aging: Rapid growth of catalyst grains. 2. Poisoning: Poisoning caused by excessive levels of sulfur, chlorine, iron, etc. 3. Powdering: Low catalyst strength leading to powdering, or leaks in the synthesis tower, etc. Everyone is welcome to share their experiences
Frequent start-stop operations, over-temperature and over-pressure conditions, water presence, etc
Under long-term operation at low temperatures, only a portion of the catalyst’s activity is utilized, and this portion becomes inactive after prolonged use.
How can it operate at low temperatures for such a long time? New catalysts tend to cause overheating; we easily experience overheating when the gas temperature exceeds 192 degrees, and we even have to reduce the pressure in the syngas tank in advance to control this issue!
Operating at low temperatures for a long time refers to an inlet temperature of 180°C, with operation at this temperature over an extended period.