Is coking or coke cleaning carried out inside the furnace tubes of the vacuum distillation unit?
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As the title suggests, a vacuum distillation unit can be used for vacuum deep drawing. What temperature should be set at the furnace outlet? Is coking or mechanical cleaning carried out inside the tubes of your vacuum furnace, and what is the interval between such cleanings or what criteria are used to determine when they need to be performed? Thank you! reward_7ree
The furnace tubes of the reducing furnace have an expanded diameter, making mechanical coke removal impossible
As far as I know, the outlet temperature of the controlled decompression furnace is 405°C; generally, the furnace temperature does not exceed 380°C. The flow rates in various sections of the furnace tubes are uniform, and the amount of coke formation within the furnace tubes is very small, so there is no need for burning to remove coke. However, those that raise the furnace outlet temperature by deep drawing generally burn out during maintenance shutdowns. At the same time, it is necessary to closely monitor the opening degrees of the control valves and the pressure changes in various circuits of the decompression furnace, in order to determine whether severe coking has occurred in the furnace tubes.