초록 ▼

A method and apparatus for catalytic conversion of hydrocarbon feedstocks and regeneration of coked catalyst resulting from the hydrocarbon conversion reaction in which the catalyst regeneration is carried out in a combination of dense phase fluidized bed, an entrained phase regeneration zone and a

A method and apparatus for catalytic conversion of hydrocarbon feedstocks and regeneration of coked catalyst resulting from the hydrocarbon conversion reaction in which the catalyst regeneration is carried out in a combination of dense phase fluidized bed, an entrained phase regeneration zone and a second dense phase fluidized bed and the hydrocarbon conversion reaction is carried out in a high velocity short contact time dilute phase reaction zone wherein the reaction time and temperature and the regenerator temperature may be separately varied to provide and maintain optimum conversion conditions.

대표청구항 ▼

In a fluidized catalytic hydrocarbon conversion process wherein hydrocarbon conversion is carried out in a transport type reaction zone in the presence of hot freshly regenerated catalyst, spent catalyst from said reaction zone is stripped of volatile hydrocarbons in a catalyst stripping zone in adm

In a fluidized catalytic hydrocarbon conversion process wherein hydrocarbon conversion is carried out in a transport type reaction zone in the presence of hot freshly regenerated catalyst, spent catalyst from said reaction zone is stripped of volatile hydrocarbons in a catalyst stripping zone in admixture with hot freshly regenerated catalyst, and stripped catalyst is regenerated with an oxygen-containing gas in a catalyst regeneration zone, the improvement which comprises introducing only freshly regenerated cracking catalyst directly from the regeneration zone into a substantially horizontal transport reaction zone maintained at an elevated cracking temperature in the range of 1150°to 1350°F. in contact with hydrocarbon feedstock and passing said catalyst and hydrocarbon feedstock through said reaction zone with an average contact time in the range of 0.1 to 1 second, discharging reaction products and spent catalyst from said reaction zone into a separation zone, and effecting substantially complete separation of hydrocarbon convesion products from spent catalyst in said separation zone.