What should be done after the furnace tube feeding is interrupted?
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When the feed flow of the furnace tube is interrupted, the fuel gas from the heating furnace burner is interlocked. There are different opinions on the subsequent treatment.: 1. Some comrades believe that the damper should be fully opened, the flue baffle should be opened, and the furnace temperature should be quickly reduced. 2. Some comrades believe that after the furnace tube feed flow is interrupted and the fuel gas of the heating furnace is interlocked, the furnace tube feed should be quickly restored (such as opening the flow control valve double line) to prevent the furnace tube from overheating. 3. Some comrades believe that if the method of 2 is used, the cooling speed is too fast, which may cause the furnace tube to deform. Haha, what should I do?
For a short period of time, press 2. For example, if the pump is emptying or the control valve fails. Feeding resumes immediately. The flame should be turned off for a long time and steam should be injected into the furnace tube for protection. The flue baffle cannot be opened widely, and the furnace temperature should be prevented from dropping too quickly. If you want to resume production later, you can close the flue damper and keep one or two small fires.
Support the point above. Furnace tube feed interruptions should not occur frequently.
Let’s talk about the normal and vacuum device: 1. Turn off the flame quickly. If the furnace tube is coked, it will be a big trouble. 2. Pay attention to the crude oil pressure, which is usually about 10 kilograms, to prevent the raw materials from flowing away. 3. It is forbidden to protect the furnace tube by sweeping the furnace tube line. (for reference only)
Furnace tube feed interruptions should not occur frequently.
If the feeding of the furnace tube is interrupted, first turn off the heating furnace and purge it with nitrogen or steam to prevent overheating and coking. Do not let the furnace temperature drop too fast.
Phenomenon: The temperature of the fire wall flue gas and the furnace tube oil outlet temperature rise sharply. reason: Feed pump evacuation ； Operation error caused the feed control valve to be fully closed ； Feed pump broken ； The pipeline valve is clogged. deal with: Try to increase the feed volume ； Reduce the number of lit burners ； In serious cases, turn off the flame immediately and treat it as an emergency shutdown.