There is a nitrogen line connected to a float flow meter behind the chlorine injection control valve for the reforming catalyst; what is its purpose?
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There is a nitrogen line connected to a float flow meter behind the chlorine injection control valve for the reforming catalyst; what is its purpose?
During the regeneration of black burn, nitrogen is supplied to maintain smooth flow in the pipes.
After performing a hot shutdown with backblowing nitrogen (which also serves to some extent as a misting agent), the chlorine injection valve is closed. It is necessary to carry out backblowing operations sequentially, blowing chlorine located behind the chlorine injection valve into the regenerator, in order to prevent chlorine from being continuously heated by steam and causing carbon buildup that could block the distribution ports and affect the oxygen chlorination process
Are you referring to UOP or IFP?
A motive gas is injected with chlorine to ensure its even dispersion and prevent tetrachloroethylene from coking inside the heating sleeve.
During regeneration shutdown or abnormal combustion, the chlorine injection valve is closed; due to the high temperature of the vessel walls, nitrogen is injected to maintain circulation and prevent pipeline blockage
The main purpose is still to prevent pipeline blockages.