Deep catalytic cracking catalysts

Deep catalytic cracking (DCC) is a catalytic cracking process which selectively cracks a wide variety of feedstocks into light olefins. The reactor and the regenerator systems are similar to FCC. However, innovation in the catalyst development, severity, and process variable selection enables DCC to produce more olefins than FCC. In this mode of operation, propylene plus ethylene yields could reach over 25%. In addition, a high yield of amylenes (C5 olefins) is possible. Figure 3-7 shows the DCC process and Table 3-10 compares olefins produced from DCC and FCC processes. ... 

Deep catalytic cracking (DCC) is a commercially proven FCC process for selectively cracking a wide variety of feedstocks to light olefins, particularly propylene. Innovations in catalyst development, operational severity, and anticoking conditions. 

In the past few years workers at Sinopec have been prominent in developing FCC operations which target propylene as a major product. The increased propylene yield is a function of catalyst developments and increasing the cracking temperature. This variation is known as Deep Catalytic Cracking (DCC) and there are two main variants. Table 10.3 illustrates typical yields that can be achieved . 

Prime-G, Prime-G+ A deep hydrodesulfurizing process for removing sulfur compounds prior to fluid catalytic cracking. It uses a fixed catalyst bed and conventional distillation. Developed by IFP (now Axens) from 1999. The + version is an improvement on the original process. In 2001, over 60 units had been licensed and 11 were operating commercially. First commercialized at Gelsenkirchen, Germany, in 2001. By 2012,140... 

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