Cracking gas oil, catalytic

Results showed that the two-stage TCH process could be used for upgrading Athabasca bitumen and for producing reformer naphtha feedstock, fuel oils, and catalytic cracking gas-oil feedstock. Product weight yields ranging from 86.4% to 93.0% were obtained. A 3 wt % CoO-15 wt % Mo03 on alumina catalyst was found to be sufficiently active to produce specification distillates. Comparison of various catalysts showed some differences in selectivities. However, extended life studies should be carried out to substantiate the differences. 

The stability of the distillate fuels in storage is influenced to a considerable degree by compounds of sulfur and nitrogen that may be present. Thus, sludge formation has been found to be promoted by disulfides, polysulfides, and thiophenol (327), as well as by pyrroles (328). Furthermore, the precipitates that form are much enriched in both sulfur and nitrogen. Pyrrole-type compounds have been identified among the nitrogen compounds in catalytically cracked gas oil (281,329) if present in appreciable amounts, their removal may be necessary (328). 

The inferiority of catalytically cracked gas oils, compared to virgin gas oils, as feed stocks (51) is attributable to higher concentrations of condensed-ring aromatics (95). The more-readily cracked hydrocarbons have already been converted, leaving behind the more-refractory hydrocarbons originally present in the fresh feed. In addition, some polycyclic hydrocarbons have been formed by the cracking operation. The polycyclic condensed-ring aromatics are not only difficult to crack but are also characterized by production of excessive yields of coke (79,345). 

Decomposition and adsorption (catalytic crack- Catalyst Fluid catalytic cracking Gas oil ... 

Assays that include yields and properties of those streams used as feed for catalytic reforming (naphtha) and catalytic cracking (gas oils)... 

SCD Sulphur-containing compounds in light catalytically cracked cycle oil-heavy gas oil mixtures 800 50 [87]... 

Some catalytic cracking, experimental and commercial. Catalytic hydrocracking of residuum, plant built. Thermal cracking, gas oil or naphtha, lOOO F, 100 psi. Continuous fractionation, bubble caps. 

Fluid catalytic cracking is one of the most important processes in the petroleum refining industry. The process cracks gas oil to produce high-octane-number gasoline. The Type IV industrial design consists of two bubbling fluidized beds with continuous catalyst circulation between the two vessels ... 

Houdry Catalytic cracking of oil in USA Fischer-Tropsch plants in Germany produce synthetic fuels from coal-derived synthesis gas... 

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