Purification Technology Q&A Version [053]
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What to do if there is a sudden interruption of nitrogen supply during production? Answer: In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its operation to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the allowable limits, the system should continue to operate until nitrogen supply is restored ； If nitrogen cannot be supplied quickly within a short time, decarburization must be halted by closing valve HV3401, and the system pressure should be controlled using PV3402. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its operation to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the allowable limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly within a short time, decarburization must be halted by closing valve HV3401, and the system pressure should be controlled using PV3402. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
Reduce the load immediately, quickly investigate the cause of the nitrogen supply interruption and restore it right away; if restoration is not possible within a short time, shut down the system.
Emergency stop: the air supply for the compressor’s dry gas seal is interrupted
The system operates at reduced load; the cause is identified. If it cannot be restored in a short time, it is treated as a shutdown
In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its output to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the specified limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly within a short time, decarburization should be halted by closing valve HV3401, and the pressure should be controlled using PV3402. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
Answer: In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its output to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the specified limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly within a short time, decarburization should be halted by closing valve HV3401, and the pressure should be controlled using PV3402. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its output to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the specified limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly within a short time, decarburization should be halted by closing valve HV3401, and the pressure should be controlled using PV3402. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its output to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the specified limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly in a short time, decarburization should be carried out during a shutdown. The operating equipment continues to run, maintaining solution circulation. If the parking time is too long, shut down all operating equipment.
In the event of a sudden interruption in the supply of medium and low pressure nitrogen during production, the system should first reduce its output to maintain production, while simultaneously investigating promptly the cause of the interruption. If nitrogen can be supplied again within a short time and the level of carbon dioxide in the gas does not exceed the specified limits, the system should continue to operate until nitrogen supply is restored； If nitrogen cannot be supplied quickly within a short time, decarburization must be halted by closing valve HV3401, and the system pressure should be controlled using PV3402.