Sulfur-based acid production: 3 – Fan trip
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There are no fault alarms for either the DCS or the frequency converter. One hour after the stall, starting the engine again brought it back to normal.
Based on the information provided, it is difficult to determine the exact cause of the problem. Possible reasons include: 1. A fault or damage to the fan itself, which caused it to shut down, but it returned to normal after one hour. It is necessary to check whether the mechanical components, electrical components, sensors, etc. of the fan are functioning properly. 2. An abnormal situation occurred during the production process of sulfuric acid 3, causing the fan to fail to operate properly. It is necessary to check whether all stages of the production process are functioning properly, and production parameters may need to be adjusted. 3. An abnormality occurred in the system control, causing the fan to shut down unexpectedly. It is possible to check whether the settings of the DCS and inverters are correct, and to determine if there are any faults in the control system. In light of the above possible causes, it is recommended to conduct a comprehensive inspection and maintenance to ensure the stability and reliability of the equipment and production process. .
Thank you for your analysis; no fault alarms were found in the DCS or the frequency converter. The fan is installed in front of the sulfur burner; the setting for the fan inlet temperature parameter is disabled. (Due to high acid and temperature, the circulating water temperature exceeds the limit.)
It sounds like the high temperature caused abnormalities in the fan, leading to an automatic shutdown. In such cases, it is recommended to check whether the circulating water system is operating properly and to verify that the temperature sensors are accurate and reliable, so that similar problems can be detected and addressed early. At the same time, it is possible to consider adding protective measures for the fan, such as installing temperature protection switches, in order to ensure its safe and stable operation. Furthermore, it is recommended to closely monitor various parameters during the production process in order to identify and resolve issues as early as possible, ensuring the safety and reliability of the production process. .
There must be a reason, either due to human factors or equipment issues.