Abstract: A carbon nanotube synthesis process apparatus comprises a reaction tube in which a reaction field is formed, and a discharge pipe (32) arranged downstream of the reaction tube and discharging carbon nanotubes to the outside. A plurality of nozzles (34) are provided on the sidewall of the discharge pipe (32) in directions which are deflected with respect to the center (O) of the discharge pipe (32). When gases are discharged from the plurality of nozzles (34), a swirl flowing from the inner side surface along the inner side surface is produced in the discharge pipe (32). Adhesion of carbon nanotubes to the inner side surface of the discharge pipe (32) is prevented by the swirl flow and thus the apparatus can be operated continuously.

Abstract: A production amount and a yield in a carbon nanotube producing device are improved. Inside a reaction pipe (20) heated so as to become a circumference heating body, a plurality of nozzles (26) for injecting a material and carrier gas into the reactor pipe and at least one internal heating source (24) are arranged. By arranging a plurality of the nozzles, the production amount is increased. The nozzles are arranged so as to be sandwiched by two heating sources (circumference heating element, internal heating source) and a distance to the closest two heating source peripheral walls is “a”. Also, a distance between the adjacent nozzles is “b” (?2a). Flows of the material and the carrier gas injected by the nozzles do not interfere with each other or the heating source wall, and the yield is increased.

Abstract: A discharge gas containing carbon nanotubes and discharged from a reactor unit (12) is led to a filter (26) through a discharge pipe (24). A blower (28) is disposed downstream from the filter (26). The blower (28) is used to such the discharged gas in the discharge pipe (24). Thus, even when the filter has begun to clog, the pressure inside the discharge pipe on the side upstream from the filter is prevented from increasing.

Abstract: A carbon nanotube synthesis process apparatus comprises a reaction tube in which a reaction field is formed, and a discharge pipe (32) arranged downstream of the reaction tube and discharging carbon nanotubes to the outside. A plurality of nozzles (34) are provided on the sidewall of the discharge pipe (32) in directions which are deflected with respect to the center (O) of the discharge pipe (32). When gases are discharged from the plurality of nozzles (34), a swirl flowing from the inner side surface along the inner side surface is produced in the discharge pipe (32).

Abstract: A production amount and a yield in a carbon nanotube producing device are improved. Inside a reaction pipe (20) heated so as to become a circumference heating body, a plurality of nozzles (26) for injecting a material and carrier gas into the reactor pipe and at least one internal heating source (24) are arranged. By arranging a plurality of the nozzles, the production amount is increased. The nozzles are arranged so as to be sandwiched by two heating sources circumference heating element, internal heating source) and a distance to the the closest two heating source peripheral walls is “a”. Also, a distance between the adjacent nozzles is “b” (?2a). Flows of the material and the carrier gas injected by the nozzles do not interfere with each other or the heating source wall, and the yield is increased.

Abstract: A discharge gas containing carbon nanotubes and discharged from a reactor (12) is led to a filter (26) through a discharge pipe (24). A blower (28) is disposed downstream from the filter (26). The blower (28) is used to suck the discharge gas in the discharge pipe (24). Thus, even when the filter has begun to clog, the pressure inside the discharge pipe on the side upstream from the filter is inhibited from increasing.