DEVICE AND METHOD FOR SINGLE-STAGE CONTINUOUS PREPARATION OF CARBON NANOTUBES

    公开(公告)号:US20210395090A1

    公开(公告)日:2021-12-23

    申请号:US16605834

    申请日:2018-03-27

    摘要: An apparatus for continuous preparation of carbon nanotubes, based on a fluidized bed reactor. The fluidized bed reactor comprises an annular varying diameter zone, a raw material gas inlet, a catalyst feeding port, a protective gas inlet, and a pulse gas controller. The annular varying diameter zone is located at a zone from a ¼ position starting from the bottom to the top. The pulse gas controller is disposed at the arc-shaped top portion of the annular varying diameter zone. The catalyst feeding port is located at the top of the fluidized bed reactor. The raw material gas inlet and the protective gas inlet are located at the bottom of the fluidized bed reactor. The device is also provided with a product outlet and a tail gas outlet. The device has a simple structure and low cost, is easy to operate, has a high raw material utilization rate, can effectively control the problem of carbon deposition on the inner wall of a primary reactor, can manufacture high-purity carbon nanotubes, and is suitable for large-scale industrial production.

    Device for carrying out gas/solid reactions
    10.
    发明授权
    Device for carrying out gas/solid reactions 失效
    用于进行气体/固体反应的装置

    公开(公告)号:US4722768A

    公开(公告)日:1988-02-02

    申请号:US854636

    申请日:1986-04-22

    摘要: Untreated coal is activated with steam at temperatures of 600.degree. to 950.degree. C. in a vibrating fluid bed, which is directly heated. The untreated coal is pre-dried by counter-current passage of the waste gases from the reaction either during feeding of the untreated coal or in the first part of the vibrating fluid bed trough. During the activation, secondary air can be passed in through a sparge pipe which is arranged parallel to the vibrating fluid bed trough. It is possible to carry out the heating exclusively with the supply of secondary air.

    摘要翻译: 在直接加热的振动流化床中,未处理的煤在600℃至950℃的温度下用蒸汽活化。 未处理的煤通过在未处理煤的供给期间或在振动流化床槽的第一部分中来自反应的废气的逆流通过而被预干燥。 在激活期间,二次空气可以通过平行于振动流化床槽的喷射管进入。 可以通过二次空气的供给专门进行加热。