What should be done if there is excessive catalyst loss during normal production in a catalytic unit?
Thread Content
Our unit is a catalytic cracking plant with a capacity of 60 W per ton per year. After operating continuously for 150 days, the catalyst has been degrading at a rate of 2 tons per day. A week ago, it was observed that the dilute-phase density in the regenerator increased from 2.05 to 16.02, while the dense-phase density decreased from 380 to 302 (KG/m³). How should the operating conditions be adjusted???
1. Operate smoothly to increase the regeneration pressure； 2. Reduce the main air flow rate, and select an appropriate linear velocity of the bed layer as well as an appropriate amount of catalyst, in order to decrease the concentration at the inlet of the cyclone separator.