The reaction system uses hydrogen in circulation along with nitrogen
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At the start of operation, the system failed to completely remove the nitrogen, so the waste hydrogen was continuously vented through the flare. The nitrogen content in the system just won’t go down. What’s going on? Solve
1. The purity of hydrogen is insufficient. 2. There is an issue with the analysis. When in operation, nitrogen is usually used to release pressure, and then hydrogen is introduced for low-pressure displacement – two times is sufficient.
How can this situation be resolved now?
What is your system pressure? Is there a leak in the emergency nitrogen valve?
Install blind flanges on all pipelines that are in series pressure with nitrogen, except for the pressure control valves. The hydrogen is pushed out gradually, replacing it little by little.
First, analyze the new hydrogen sample, and then determine whether sampling has occurred into the air or if there are issues with the testing analysis
The system pressure here is 14.7 MPa, and the flow rate of the waste hydrogen is 150 Nm3/h. May I ask if there is nitrogen in the fresh hydrogen? What is the nitrogen content approximately? We don’t have the analysis data for this here