In industrial production, nitrogen generators are the key equipment for obtaining nitrogen, and the effective monitoring of their operating parameters directly affects the stability of nitrogen supply, the service life of the equipment and the production costs of the enterprise. To reasonably set the monitoring frequency, factors such as the equipment operation stage, application scenario, and process stability need to be comprehensively considered. The monitoring frequency will vary under different circumstances. This article will discuss in detail how to scientifically set the monitoring range of nitrogen generator operating parameter.
Adjust monitoring frequency according to the equipment operation stage
1. The initial operation stage of the equipment: high-frequency monitoring. The new nitrogen generator is in the early stage of its operation and the equipment is in the running-in stage. The parameters fluctuate greatly and abnormal situations are prone to occur. Therefore, it is recommended to monitor key operating parameters (such as pressure, flow, purity) every 1-2 hours during the first week of startup. For example, after a chemical company opened a new nitrogen generator, the pressure fluctuated every 2 hours due to improper debugging of the adsorption tower valve. With high-frequency monitoring, problems are discovered and adjustments are made in a timely manner to avoid production losses.
2. Stable equipment operation stage: Reduce the monitoring frequency. After the equipment is running for 1-2 months, various parameters tend to stabilize. The monitoring frequency can be appropriately reduced to once every 4-6 hours. However, if the equipment undergoes maintenance, the adaptation stage after maintenance also requires enhanced monitoring. Usually, within three days after maintenance, the main parameters are checked every 3 hours to ensure that the equipment returns to normal and then gradually reduce the monitoring frequency.
Set monitoring frequency in combination with application scenarios
1. High-precision industry: Real-time monitoring Different industries have different requirements for nitrogen quality, which directly affects the monitoring frequency. For example, in the electronic chip manufacturing industry, slight fluctuations in nitrogen purity will affect product yield. According to statistics, for every 0.1% reduction in nitrogen purity, the chip yield rate may drop by 5% - 8%. Therefore, the industry usually adopts an automated monitoring system to monitor pressure, flow and purity online in real time, and set abnormal alarms to ensure stable nitrogen supply.
2. General industrial uses: timed monitoring. The food packaging industry has relatively loose requirements for nitrogen purity and allows fluctuations in a certain range. Usually, manual inspection and parameter recording are performed every 4-8 hours. However, in peak production season, to ensure the stability of the equipment, the monitoring frequency can be adjusted to every 2-4 hours. For example, during the peak season of mooncake production in Mid-Autumn Festival, a food company shortened the monitoring frequency from 6 hours to 3 hours to ensure stable production demand.
Adjust monitoring frequency according to process stability
1. Mature process: low-frequency monitoring. For nitrogen generators that use mature processes and have been operating stably for a long time, the monitoring frequency can be low. For example, the pressure-switching nitrogen generator of a steel company has been operating stably for 8 years, and only needs to conduct a comprehensive parameter inspection every day.
2. New process or transformation stage: high-frequency monitoring If the enterprise upgrades and transforms the nitrogen generation process, in the early stage of the new process, due to the presence of many uncertain factors, the monitoring frequency should be appropriately increased. For example, a company adopts a strategy of monitoring every 4-6 hours in the first two weeks after optimizing the nitrogen generation process, and then adjusts the monitoring interval after the process stabilizes.
Monitoring range of nitrogen generator operating parameter requires flexible adjustments based on factors such as equipment operation stage, application scenario and process stability. In the early stages of the equipment, after maintenance, high-precision industries or process unstable stages, the monitoring frequency should be increased, usually once within 1-3 hours; while in the stable operation of the equipment, general industrial use or mature process environment, the monitoring frequency can be reduced to 4-8 hours. Rationally setting the monitoring frequency can not only ensure the stable operation of the nitrogen generator, but also optimize the operating costs of the enterprise and meet the demand for nitrogen in different industrial productions.
