US 11,993,516 B2
System and method for producing carbon nanotubes
Yon Jee Kim, Daejeon (KR); Kwang Woo Yoon, Daejeon (KR); Og Sin Kim, Daejeon (KR); Se Hyun Kim, Daejeon (KR); and Seung Yong Lee, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/626,781
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Nov. 30, 2020, PCT No. PCT/KR2020/017265
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2021/112511, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 10-2019-0162056 (KR), filed on Dec. 6, 2019.
Prior Publication US 2022/0289574 A1, Sep. 15, 2022
Int. Cl. C01B 32/16 (2017.01); B01J 8/00 (2006.01); B01J 8/18 (2006.01); B82Y 40/00 (2011.01)
CPC C01B 32/16 (2017.08) [B01J 8/005 (2013.01); B01J 8/1809 (2013.01); B01J 8/1863 (2013.01); B01J 8/1872 (2013.01); B82Y 40/00 (2013.01); B01J 2219/0031 (2013.01); C01B 2202/26 (2013.01); C01B 2202/36 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A system for producing carbon nanotubes, the system comprising:
a fluidized bed reactor provided with an internal space in which a carbon nanotube synthesis reaction is performed and a discharge unit for discharging a mixed gas containing carbon nanotube solid particles;
a separation unit for receiving the mixed gas containing the carbon nanotube solid particles connected to the discharge unit and for separating the carbon nanotube solid particles from the mixed gas, the separation unit comprises a filter having a pore diameter that corresponds to a reference particle diameter, wherein carbon nanotube solid particles having a particle diameter equal to or less than the reference particle diameter are separated from carbon nanotube solid particles having a particle diameter greater than the reference particle diameter; and
a re-input unit for re-inputting the carbon nanotube solid particles having the particle diameter equal to or less than the reference particle diameter to the fluidized bed reactor.