Reasons for the loss of catalytic cracking catalysts
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There is a loss of 400,000 tons per year of catalytic catalyst; the processing volume is 1,360 tons per day, with 3 tons of fresh catalyst and 5 tons of balance agent used per day. Please help analyze the reasons for this This post was last edited by DAC The army rules the world on 2009-3-29 17:30.]
There isn’t enough information to conduct an analysis; you can go to forums to find relevant posts and compare whether there are any similarities in the issues of catalyst loss in the catalytic units at your facility.
1. Check the cyclone legs and flap valves inside. 2. Check recent changes in air supply volume. 3. Check the three cyclones. 4. Examine the situation regarding rapid separation at the reactor outlet
Catalyst loss can be monitored by considering the following points: 1. Whether the type and particle size of the catalyst added comply with the process operating procedures. 2. Whether the space velocity and residence time of the catalyst added meet the operational requirements. 3. The gas velocity of the material being processed, the volume of the feed gas, and the sulfidation conditions within the reaction vessel where the catalyst is used. 4. The operating condition and separation efficiency of the cyclone separator. 5. Whether the material legs and drip valves are clogged. 6. Whether the height-to-diameter ratio of the reactor is appropriate. 7. Whether the amount of catalyst added is excessive or if the liquid level is too high