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RE: Maximum Amount of FCC slurry oil as Coker Feed

Home Forums Coking Technical Fractionation & Process Process Maximum Amount of FCC slurry oil as Coker Feed RE: Maximum Amount of FCC slurry oil as Coker Feed

#7582

Anonymous

we processed Decant oil (test) from a FCC in a DCU between 10 to 17%, the impact were in the API in the LCGO and HCGO (high contents of aromatic and polyaromatics), The recycle ratio increase until  16 %, the coke was more difficult to quench and also more impermeable and harder (must be of the change of the structure of the coke , porosity, etc. Some refiners use a small amount of it only to avoid the production of pet (coke around 5  to 7%), the LCGO production decreace and the HCGO increase
You have to take very care during the quenching/draining and cutting (is possible to get geyser)
 
During these operation we reduce the recycle increasing the outlet temperature in the heater, (we keep constant the pressure in the coke drum)
Send me your eamil and I can sent to you a presentation that We prepared for a workshop, showing these results
 
I´m sorry for my english (the presentation was prepared in English)
 
Best Regards
 

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