Ammonia synthesis catalyst
Thread Content
1. What are the requirements for trace amounts of CO and CO2 in ammonia synthesis catalysts? 2. Are there any requirements for water and oxygen?
For specific parameters, consult catalyst manufacturers and synthesis technology providers; the lower the level of oxygen-containing compounds, the better, generally within 10 ppm
1. What are the requirements for trace amounts of CO and CO2 in ammonia synthesis catalysts? Yes, and it’s very strict. In a hydrogen-rich environment, CO and CO2 produce water through hydrogenation and consume hydrogen ； Additionally, CO will form carbonyl compounds with the catalyst, resulting in a loss of catalytic activity. 2. Are there any requirements regarding water and oxygen? Yes, in principle, the presence of water and oxygen is not allowed. Specific requirements for data vary depending on different patent process manufacturers and operating conditions.
Under normal circumstances, CO + CO2 is less than 10 PPm. Water and oxygen are not allowed. It is harmful to all catalysts.
The oxygen-oxygen atoms content is less than 10 ppm
Generally, the level of CO + CO2 should be less than 10 PPM; levels between 10 and 50 PPM require close monitoring. Under normal operating conditions, operation should not exceed 24 hours, with particular attention paid to changes in the temperature of the synthesis tower
The ammonia content should be basically less than 3%
Yes, the ammonia content in the incoming gas is less than 3%
Our company has essentially absorbed all of CO and CO2 during the methanation process; indeed, only trace amounts remain, which can also be absorbed by the molecular sieves located before the tower. There are basically no compounds containing oxygen atoms, let alone water or oxygen. The synthetic catalysts used in our company are iron-based catalysts, and they must not come into contact with oxygen at all