Handling of cracked reboiler tubes in the fractionation system
Thread Content
As the title suggests: After the furnace tubes of the reboiler in the distillation system break, can steam be introduced into the furnace immediately to extinguish the fire, or should waiting be done until all the residual oil inside the tubes has burned out before attempting to put out the fire?
Stop the fuel gas supply and the blowdown fan; introduce fire-suppression steam into the furnace. Stop the distillation process to remove oil, and break the vacuum in the vacuum tower as well
Thank you for the answer! I am influenced by the requirements for handling the reactor (as clearly specified in the operating procedures: when the reactor tubes rupture, it is not possible to extinguish the fire immediately; steam must be introduced only after the medium has burned out). ) So there has always been a concern: generally, a considerable amount of residual oil remains inside the furnace tubes. After extinguishing the fire directly, the leaked oil will inevitably vaporize, and its concentration cannot be controlled – could this lead to a secondary explosion?
The device releases pressure at 2.1 directly, causing it to shut down urgently; the processes before and after the leak are isolated, and steam is introduced once combustion has ceased. . . The steam inside the furnace, also known as soot-blowing steam, can be introduced under abnormal conditions during production in order to lower the furnace temperature; however, no refinery has been known to use this practice to date.