When should the heating furnace used at the start-up of atmospheric and vacuum distillation be switched to forced ventilation?
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When the atmospheric and vacuum heating furnace is brought online, at what point should forced ventilation be switched on? This refers to systems that have blowers and exhaust fans. Are there any specific requirements, such as a certain temperature reached in the furnace chamber?
After the heating furnace is ignited, forced ventilation can be switched on; a furnace temperature of around 100 degrees is sufficient, and it can be adjusted using exhaust fans and ventilation fans.
Generally, heating is carried out in a closed loop (using gas and fire) until the temperature at the furnace outlet reaches 280°C; after that, the blower and exhaust fan are started to prepare for rapid heating by introducing oil and fire in an open-loop system
Generally, ignition and heating can begin at 150 degrees or above; once ignition occurs, forced ventilation can be used for adjustment! 1# dongliangsir
In fact, during the process of cyclic heating, forced ventilation can be changed; the key is to prevent the furnace from going out during this change! I used to worry about this issue.
Once the fire is started, it’s possible to switch to forced ventilation; it’s better to do that earlier!
I think the earlier the better; having the drum exhaust fan involved in advance helps to ensure smooth operation later on and keeps the conditions inside the furnace under control.