Fluid catalytic cracking dynamics

The fluid catalytic cracking (FCC) is a very dynamic nnit that is typically the major conversion process in a refinery. Proper modeling and nnderstanding of unit capabilities represents a tremendons opportunity to improve the overall nnit operation and minimize unit emissions. The combustion chemistry in the FCC regenerator that produces environmental pollntants is extremely complex as nnmerons interactions and reactions occnr between the various chemical species. 

DMC has its origins in industry. Cutler and Ramaker [35] outlined the DMC strategy Prett and Gillette [36] showed its application to a fluid catalytic cracking unit. The most popular version of DMC is now Quadratic Dynamic Matrix Control (QDMC) [37,38] which... 

Uygun, H. Ta kin, C. Kubat, and S. Arslankaya, FUZZYFCC Fuzzy logic control of a fluid catalytic cracking unit (FCCU) to improve dynamic performance, Computers Chemical Engineering, 30(5), 850-863 (2006). 

Catalytic cracking is a very flexible process used to reduce the molecular weight of hydrocarbons. Today, fluid catalytic cracking (FCC) remains the dominant conversion process in petroleum refineries. Although FCC is sometimes considered to be a fully matured process, new challenges and opportunities in its application and a continuing stream of innovations in the process and catalyst field ensure that it will remain an important and dynamic process in the future of refining. 

RC McFarlane, RC Reineman, JF Bartee, and C Georgakis. Dynamic simulator for a model IV fluid catalytic cracking unit. Comput. Chem. Engg., 17(3) 275-300, 1993. 

Huq, 1., Morari, M. and Sorensen, R.C. (1995) Modifications to model IV fluid catalytic cracking units to improve dynamic performance. AlChE Journal, 41 (4), 1481-99. 

The last topical section concerns gas flows with droplets. Such flows are encountered in various spray processes in internal combustion engines, fluid catalytic cracking, gas phase polymerization, and spray drying. Before turning to large-scale simulations of the dynamic evolution of such sprays, it is essential to understand the elementary process of a binary droplet coUision in a gas. It has been estabHshed that in such systems, the outcome of a coUision... 

As stated above for catalytic cracking simulation under the reaction conditions of FCCs a bench scale internal recycle batch reactor was proposed by de Lasa (1991, 1992). It has to be pointed out that this objective is not easy nor straight forward considering the complex fluid-dynamic... 

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