Closed cyclone FCC catalyst separation method and apparatus

Claim 1

An apparatus for separating solids from a gaseous stream containing solids, comprising a cyclone separation means having a dipleg including a bottom portion and a seal pot which is concentric with said dipleg, said seal pot comprising vertical side walls, a tpo portion of said side walls overlaps said bottom portion of said cyclone dipleg and defines an annular port, a bin portion comprising vertical inwardly slanted walls attached to a lower portion of said vertical side walls and means defining at least one opening at a lower end of the bin portion.

Claim 2

An apparatus for separating solids from a gaseous stream containing solids, comprising a cyclone separation means having a dipleg including a bottom portion and a seal pot which is concentric with said dipleg, said seal pot comprising vertical side walls, a tpo portion of said side walls overlaps said bottom portion of said cyclone dipleg and defines an annular port, a bin portion comprising vertical inwardly slanted walls attached to a lower portion of said vertical side walls and means defining at least one opening at a lower end of the bin portion.

Claim 4

An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a reactor vessel comprising a riser conversion zone defined by a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone within said reactor vessel; means for introducing a suspension of hydrocarbon feed and catalyst into an upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from the downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel, said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone; means for conducting cracked hydrocarbons, from an outlet of said primary cyclone separator and from said reactor vessel; means for sealing each of said riser cyclone dipleg and said primary cyclone dipleg; said second conduit defining an annular port for passing at least a portion of the stripping gas from said catalyst stripping zone directly into said second conduit.

Claim 5

An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a reactor vessel comprising a riser conversion zone defined by a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone within said reactor vessel; means for introducing a suspension of hydrocarbon feed and catalyst into an upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from the downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel, said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone; means for conducting cracked hydrocarbons, from an outlet of said primary cyclone separator and from said reactor vessel; means for sealing each of said riser cyclone dipleg and said primary cyclone dipleg; said second conduit defining an annular port for passing at least a portion of the stripping gas from said catalyst stripping zone directly into said second conduit.

Claim 12

An apparatus for the fluid catalytic cracking of a hydrocarbon feed, comprising: a reactor vessel comprising a riser conversion zone defined by a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone; means for introducing a suspension of hydrocarbon feed and catalyst into said upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from said downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel; said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator, said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone, means for conducting cracked hydrocarbon from an outlet of said primary cyclone separator and from said reactor vessel; said second conduit defining a first annular port for passing at least a portion the stripping gas from said catalyst stripping zone directly into said second conduit; wherein each of said diplegs includes means defining a lower opening and each of said diplegs further includes a dipleg seal means located at the lower opening of each said dipleg, each of said dipleg seal means comprising vertical side walls, an upper portion of which overlaps a lower portion of its respective cyclone separator dipleg to define a second annular port located above the lower opening of said respective cyclone separator dipleg, a bin portion comprising vertical, inwardly slanted walls attached to a lower portion of the side walls, and means defining an opening at a lower end of said bin portion.

Claim 13

An apparatus for the fluid catalytic cracking of a hydrocarbon feed, comprising: a reactor vessel comprising a riser conversion zone defined by a vertically disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone; means for introducing a suspension of hydrocarbon feed and catalyst into said upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from said downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel; said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator, said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone, means for conducting cracked hydrocarbon from an outlet of said primary cyclone separator and from said reactor vessel; said second conduit defining a first annular port for passing at least a portion the stripping gas from said catalyst stripping zone directly into said second conduit; wherein each of said diplegs includes means defining a lower opening and each of said diplegs further includes a dipleg seal means located at the lower opening of each said dipleg, each of said dipleg seal means comprising vertical side walls, an upper portion of which overlaps a lower portion of its respective cyclone separator dipleg to define a second annular port located above the lower opening of said respective cyclone separator dipleg, a bin portion comprising vertical, inwardly slanted walls attached to a lower portion of the side walls, and means defining an opening at a lower end of said bin portion.

Claim 15

An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a reactor vessel comprising a riser conversion zone defined by a vertical disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone within said reactor vessel; means for introducing a suspension of hydrocarbon feed and catalyst into an upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from the downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel; said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator, said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone, means for conducting cracked hydrocarbons from an outlet of said primary cyclone separator and from said reactor vessel; said second conduit defining a first annular port for passing at least a portion of a stripping gas from said catalyst stripping zone directly into said second conduit; wherein each of said diplegs includes means defining a lower opening and at least one of said diplegs further includes a dipleg seal means located at the lower opening of said at least one dipleg, each of said dipleg seal means comprising vertical side walls, an upper portion of which overlaps a lower portion of its respective cyclone separator dipleg to define a second annular port located above the lower opening of said respective cyclone separator dipleg, a bin portion comprising vertical, inwardly slanted walls attached to a lower portion of the side walls, and means defining an opening at a lower end of said bin portion.

Claim 16

An apparatus for the fluid catalytic cracking of a hydrocarbon feed comprising: a reactor vessel comprising a riser conversion zone defined by a vertical disposed elongated tubular conduit having an upstream end and a downstream end, said downstream end terminating within said reactor vessel; means defining a catalyst stripping zone within said reactor vessel; means for introducing a suspension of hydrocarbon feed and catalyst into an upstream end of said riser conversion zone to produce a mixture of catalyst and cracked hydrocarbon feed exiting from the downstream end of said riser conversion zone; means for introducing a stripping gas into said stripping zone; a riser cyclone separator; a first enclosed conduit connecting said riser cyclone separator to said downstream end of said riser conversion zone, said first conduit completely separating the material conducted therein from the atmosphere of said reactor vessel; said riser cyclone separator further including a dipleg for conducting catalyst from said riser conversion zone to said catalyst stripping zone; a primary cyclone separator; a second conduit connecting said primary cyclone separator to an outlet of said riser cyclone separator, said primary cyclone separator further including a dipleg for conducting catalyst from said primary cyclone separator to said catalyst stripping zone, means for conducting cracked hydrocarbons from an outlet of said primary cyclone separator and from said reactor vessel; said second conduit defining a first annular port for passing at least a portion of a stripping gas from said catalyst stripping zone directly into said second conduit; wherein each of said diplegs includes means defining a lower opening and at least one of said diplegs further includes a dipleg seal means located at the lower opening of said at least one dipleg, each of said dipleg seal means comprising vertical side walls, an upper portion of which overlaps a lower portion of its respective cyclone separator dipleg to define a second annular port located above the lower opening of said respective cyclone separator dipleg, a bin portion comprising vertical, inwardly slanted walls attached to a lower portion of the side walls, and means defining an opening at a lower end of said bin portion.