Oxygen content during startup of the ammonia synthesis loop
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During the startup phase of the ammonia synthesis loop, it is necessary to keep the oxygen content at 0.1%. What is the requirement behind this?
Is it the same for everything? To prevent explosions? When performing gas displacement here, we also keep the oxygen content at or below this value to prevent explosions.....
The explosion range of hydrogen must be much higher than this, right?
Here, oxygen should be regarded as an oxidizing agent.....
Firstly, it is for safety reasons; secondly, oxygen is a harmful impurity, so its level should be reduced as much as possible. However, reducing it too much would lead to excessive cost increases, so based on practical considerations, the level is set at 0.1%. Previously, the standard was 0.5%