Methods of chemical looping include introducing a hydrocarbon-containing feed stream into a first reaction zone. The first reaction zone includes a moving catalyst bed reactor. The moving catalyst bed reactor includes a heterogeneous catalyst, and the heterogeneous catalyst includes a heat-generating metal oxide component. The method further includes cracking the hydrocarbon-containing feed stream in the presence of the heterogeneous catalyst of the moving catalyst bed reactor, reducing the metal oxide heat-generating component of the heterogeneous catalyst with hydrogen from a product stream to generate heat, and utilizing the heat to drive additional cracking of the hydrocarbon-containing feed stream. A chemical looping system includes at least one reduction reactor, which includes a moving catalyst bed reactor and a heterogeneous catalyst, and at least one oxidation reactor fluidly coupled to the reduction reactor.

Provided is a Fluid Catalytic Cracking catalyst composition having increased propylene production with respect to other Fluid Catalytic Cracking catalysts (measured at constant conversion). The catalyst composition comprises a particulate which comprises (a) non-rare earth metal exchanged Y-zeolite in an amount in the range of about 5 to about 50 wt %, based upon the weight of the particulate; and (b) ZSM-5 zeolite in an amount in the range of about 2 to about 50 wt %, based upon the weight of the particulate.

Methods and systems are disclosed for upgrading a paraffinic feed to gasoline. The system includes a fluidized cracker receiving a paraffin-containing feedstream and producing an olefin product therefrom, the olefin product comprising C4 olefins; a separation system receiving the olefinic product and separating an olefin-containing feed therefrom, the olefin-containing feed having an olefin content of at least about 10 wt %; and an oligomerization reaction system receiving the olefin-containing feed and exposing the olefin-containing feed to a conversion catalyst under first effective conversion conditions to form an oligomerized olefin effluent comprising C.sub.5+ olefinic compounds.

Methods and systems are disclosed for upgrading a paraffinic feed to gasoline. The system includes a fluidized cracker receiving a paraffin-containing feedstream and producing an olefin product therefrom, the olefin product comprising C4 olefins; a separation system receiving the olefinic product and separating an olefin-containing feed therefrom, the olefin-containing feed having an olefin content of at least about 10 wt %; and an oligomerization reaction system receiving the olefin-containing feed and exposing the olefin-containing feed to a conversion catalyst under first effective conversion conditions to form an oligomerized olefin effluent comprising C.sub.5+ olefinic compounds.

A fluidized bed reactor is provided, comprising an inlet zone at a lower position, an outlet zone at an upper position, and a reaction zone between the inlet zone and the outlet zone. A guide plate with through holes is disposed in the reaction zone, comprising a dense channel region in an intermediate region thereof and a sparse channel region disposed on a periphery thereof and encompassing the dense channel region. Catalysts in said fluidized bed reactor can be homogeneously distributed in the reaction zone thereof, whereby the reaction efficiency can be improved. A reaction regeneration apparatus comprising said fluidized bed reactor, and a process for preparing olefins from oxygenates and a process for preparing aromatic hydrocarbons from oxygenates using the reaction regeneration apparatus.

A process for producing an anti-erosion coating on an inner or outer metal wall of a chamber of a fluid catalytic cracking unit, comprising: (i) the shaping of a honeycomb metal anchoring structure, said anchoring structure being formed from a plurality of strips connected in pairs by joining assembly portions of these strips so as to form a plurality of cells between two adjacent strips, (ii) the fastening of said anchoring structure by welding to said metal wall, so that each cell of the anchoring structure is welded to the wall of the chamber at least at the junctions between the contiguous assembly portions of two adjacent strips, and (iii) the insertion of a composite material into the cells from the metal wall and at least up to the upper longitudinal edge of each strip.

A waste to fuel system is disclosed that provides for simplified pyrolysis and cracking of useful hydrocarbons from waste by using molten salt as a heat transfer medium in the pyrolysis stage and using molten salt mixed with catalyst in the cracking stage.

A waste to fuel system is disclosed that provides for simplified pyrolysis and cracking of useful hydrocarbons from waste by using molten salt as a heat transfer medium in the pyrolysis stage and using molten salt mixed with catalyst in the cracking stage.

A waste to fuel system is disclosed that provides for simplified pyrolysis and cracking of useful hydrocarbons from waste by using molten salt as a heat transfer medium in the pyrolysis stage and using molten salt mixed with catalyst in the cracking stage.

A waste to fuel system is disclosed that provides for simplified pyrolysis and cracking of useful hydrocarbons from waste by using molten salt as a heat transfer medium in the pyrolysis stage and using molten salt mixed with catalyst in the cracking stage.