Under what conditions should the ammonia synthesis catalyst be operated and used?

Under what conditions should the ammonia synthesis catalyst be operated and used?

Under what conditions should the ammonia synthesis catalyst be operated and used?
Under what conditions should the ammonia synthesis catalyst be operated and used?
(Recommended operating conditions under normal circumstances)
Operating temperature range: 350-530℃
Normal operating temperature: 350-500℃
Operating pressure range: 12-40 Mpa
Operating airspeed: 6000-30000 h-1 (select according to pressure and tower type)
Reduction starting temperature: 200-250℃