Incombustible withdrawing system

An incombustible withdrawing system for withdrawing an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium, said incombustible withdrawing system comprising:

• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• a fluidized medium delivering device to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of the fluidized-bed furnace;
• and
• a projection projecting radially inwardly from an inner surface of said incombustible discharge passage.

An incombustible withdrawing system for withdrawing an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium, said incombustible withdrawing system comprising:

• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• and
• a screw conveyor having a screw vane to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of the fluidized-bed furnace, said screw conveyor having a blocking member provided on a rear face of said screw vane.

An incombustible withdrawing system for withdrawing an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium, said incombustible withdrawing system comprising:

• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• a fluidized medium delivering device to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of the fluidized-bed furnace;
• and
• a blowing device to blow a gas into a lower portion of said fluidized medium delivering device to increase pressure of the lower portion of said fluidized medium delivering device.

A fluidized-bed furnace system comprising:

• a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium to combust, gasify, or pyrolyze an object containing an incombustible;
• and
• an incombustible withdrawing system comprising:
• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of said fluidized-bed furnace;
• a fluidized-bed separating chamber disposed downstream of said mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture having a high concentration of the fluidized medium and a second separated mixture having a high concentration of the incombustible;
• a return passage to return the first separated mixture to said fluidized-bed furnace;
• and
• an incombustible discharge passage to discharge the second separated mixture to an exterior of said fluidized-bed furnace.

A fluidized-bed furnace system comprising:

• a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium to combust, gasify, or pyrolyze an object containing an incombustible;
• and
• an incombustible withdrawing system comprising:
• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of said fluidized-bed furnace;
• and
• an incombustible discharge passage disposed downstream of said mixture delivery path to move the mixture vertically upward and to discharge the mixture from a position located higher than a surface of said fluidized bed to an exterior of said fluidized-bed furnace.

A fluidized-bed furnace system comprising:

• a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium to combust, gasify, or pyrolyze an object containing an incombustible;
• and
• an incombustible withdrawing system comprising:
• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of said fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• a fluidized medium delivering device to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of said fluidized-bed furnace;
• and
• a projection projecting radially inwardly from an inner surface of said incombustible discharge passage.

A fluidized-bed furnace system comprising:

• a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium to combust, gasify, or pyrolyze an object containing an incombustible;
• and
• an incombustible withdrawing system comprising:
• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of said fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• and
• a screw conveyor having a screw vane to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of said fluidized-bed furnace, said screw conveyor having a blocking member provided on a rear face of said screw vane.

A fluidized-bed furnace system comprising:

• a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium to combust, gasify, or pyrolyze an object containing an incombustible;
• and
• an incombustible withdrawing system comprising:
• a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of said fluidized-bed furnace;
• an incombustible discharge passage disposed downstream of said mixture delivery path;
• a fluidized medium delivering device to deliver the mixture vertically upward in said incombustible discharge passage to an exterior of said fluidized-bed furnace;
• and
• a blowing device to blow a gas into a lower portion of said fluidized medium delivering device to increase pressure of the lower portion of said fluidized medium delivering device.