公开(公告)号：US11820661B2

公开(公告)日：2023-11-21

申请号：US16605834

申请日：2018-03-27

申请人： Shandong Dazhan Nano Materials Co., Ltd.

发明人： Yan Li ,  Lei Geng ,  Zhenhua Lv ,  Longli Li ,  Zhongcun Bao

IPC分类号： C01B32/164 ,  B01J8/00 ,  B01J8/18 ,  B01J8/40 ,  B01J23/745 ,  B01J23/75 ,  B01J23/755

CPC分类号： C01B32/164 ,  B01J8/005 ,  B01J8/1881 ,  B01J8/40 ,  B01J23/745 ,  B01J23/75 ,  B01J23/755 ,  B01J2208/00548 ,  C01B2202/06 ,  C01P2004/03 ,  C01P2006/12 ,  C01P2006/80

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.