Reformation chlorine injection issue

This post was last edited by qugd on 2022-4-28 09:48. This seems to describe the operation of a semi-regenerative reforming unit. This type of reforming unit is designed because the reaction zone 1 is the most sensitive to chlorine injection changes, while the effect of chlorine injection is ultimately reflected in reaction zone 4; moreover, the water-chlorine balance is a key factor affecting the activity of the entire reforming catalyst. In fact, by strictly controlling the dehydration parameters of the reformation feed oil, it is relatively easy to maintain a good water-chlorine balance. If the dehydration tower does not operate properly, it is necessary to keep a close eye on the chlorine injection level, in order to prevent excessive chlorine loss that could lead to a decrease in catalyst activity – meaning that the temperature in the reactor becomes insufficient. However, an excessive amount of chlorine injection is also problematic, as it can have an adverse effect on the catalyst’s activity and lifespan. The dehydration effect of the reformed material directly affects the chlorine injection operation. I remember when I first started working, going to the plants to work on the industrial application of CB-6 and CB-7 reforming catalysts. In some of those plants, the operation of the dehydration towers was excellent; the water level could be kept at 5 ppm, which allowed the plants to run very smoothly, with chlorine injection levels remaining relatively constant. At that time, automated control systems like DCS were not as widespread as they are today. Yet some of the experienced operators were truly dedicated, constantly monitoring the gauges and adjusting the operating conditions of various circuits, truly embodying the spirit of \"three diligences and four strictnesses.\"

Just read the book; you’ll know what the main reactions to One Opposition and Four Oppositions are