Riser FCC unit

A number of different types of laboratory scale units have been developed to simulate commercial catalytic crackers. These include fixed bed (MAT), fluidized bed, and riser units.(1,2,3) In particular, for simulating commercial riser FCC units which process residue, a riser pilot plant is the preferred choice. 

Today more than 600 commercial FFB reactors are in operation worldwide, over 350 of which are riser FCC plants. These riser FCC units produce over one-half of the world commercial gasoline. In China, over 90% of the FCC plants are riser reactors. The total number is more than 83 units, and the processing capacity ranks second, following that of the United States. 

Fig. 1. Riser FCC unit. From the UOP meeting report, SINOPEC, Beijing, China, 1990.

Both these catalysts are extremely suitable for "Short Contact Time" riser designs where high activity is desired via the combination of high concentration of RE-USY zeolite with Selective Active Matrices. Excellent commercial results with SAM matrix catalysts recently obtained in several "Short Contact Riser" FCC units in Europe have confirmed the advantages of this technology[5]. 

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See also in sourсe #XX -- [ , ]

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