Catalytic cracking advantages

In the catalytic cracking method, a suitable catalyst such as aluminum silicate or alumina is used. This provision produces an improved quality and yield of gasoline. This method has several advantages over the thermal cracking method. Among these, special mention... 

Although catalytic cracking was introduced commercially in 1936 and its advantages were obvious to many observers, the principal impetus to the wide use of this process was the demand for aviation gasoline occasioned by World War II. Catalytic cracking capac-... 

Ignition-Quality Improvers. Diesel fuels have found greatly increased use in recent years—so much so that refiners have had to look to cracked distillates from catalytic cracking operations for their extra Diesel fuels. While these cracked distillates have the advantages of relatively high heat content and low pour point, they are inferior in ignition quality (cetane number) to straight-run distillates from the same crudes. 

In contact with catalyst at temperatures higher than those for FCC, heavy petroleum fractions crack to produce propylene and butene, which are useful starting materials for organic synthesis and polymerization. The catalytic cracking has many advantages over the thermal cracking of naphtha to... 

The following advantages can be envisaged for catalytic cracking processes compared with simple thermal treatments ... 

Because of inorganic components in waste plastics, thermal, noncatalytic processes present some advantages. In order to obtain high conversion Chinese inventors [52] propose a two-step process thermal cracking in the first step in order to obtain partial cracking of waste plastics and to separate inorganic components, and in the next step catalytic cracking of the product over a fixed-bed catalyst. 

The following examples reflect the main advantages of SIMS analysis the microanalysis of elements at trace level in the case of catalytic cracking catalysts (FCC). the sensitivity to light elements for the study of coke distribution and the possibility of providing composition profiles on zeolites modified by chemisorption of metals. 

Inherent drawbacks of fixed-bed catalytic cracking were overcome by the development of moving-bed processes in which the cracking and regeneration reactions are carried out in separate vessels and the catalyst is continuously circulated from one vessel to the other (51). Moving-bed processes have the following advantages ... 

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