초록 ▼

An apparatus for the fluidized catalytic cracking of a hydrocarbon feedstock comprises a riser reactor and a collar positioned along the same axis as the downstream end of the riser reactor. The collar is further positioned in close proximity to, but not in contact with, the riser reactor such that

An apparatus for the fluidized catalytic cracking of a hydrocarbon feedstock comprises a riser reactor and a collar positioned along the same axis as the downstream end of the riser reactor. The collar is further positioned in close proximity to, but not in contact with, the riser reactor such that an annular space is defined between the riser reactor and the collar. The collar has a diameter greater than the diameter of the riser reactor at its downstream end and communicates directly and laterally with the inlets of the cyclone separation system. The riser reactor may or may not include a flow reversal cap to redirect the flow of the hydrocarbons and the catalyst.

대표청구항 ▼

An apparatus for the fluidized catalytic cracking of a hydrocarbon feedstock, the apparatus comprising: (a) a disengaging vessel having a dense catalyst phase and a dilute catalyst phase; (b) a vertically ascending riser reactor having means at its upstream end for the introduction of the feedstock

An apparatus for the fluidized catalytic cracking of a hydrocarbon feedstock, the apparatus comprising: (a) a disengaging vessel having a dense catalyst phase and a dilute catalyst phase; (b) a vertically ascending riser reactor having means at its upstream end for the introduction of the feedstock and the catalyst, the riser reactor further having a downstream end communicating with the interior of the vessel; (c) a collar having two open ends in communication with the interior of said disengaging vessel and positioned along the same axis as the downstream end of the riser reactor, the collar further being positioned in close proximity to, but not in contact with, the riser reactor such that an annular space is defined between the riser reactor and the collar, the collar having a diameter greater than the diameter of the riser reactor at its downstream end; and (d) a cyclone separation system located within the vessel and having: (i) an outlet communicating with the interior of the vessel to discharge catalyst into the dense phase; (ii) an outlet connected to vent the cracked hydrocarbons outside the vessel; and (iii) an inlet directly and laterally communicating with the collar; whereby vapors from the vessel may enter the annular space defined by the collar through one open end thereof and may thereafter enter the cyclone separation system through said inlet.