Method for Manufacturing a Nanocarbon Material

Patent metadata

Field	Value
Publication number	US-2016362301-A1
Application number	US-201514947309-A
Country	US
Kind code	A1
Filing date	Nov 20, 2015
Priority date	Jun 12, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

A method for manufacturing a nanocarbon material includes the steps of: a) supplying an acetylene-based flammable gas into a torch nozzle at a flow rate such that an ignition at the torch nozzle produces a reducing flame in a cooling zone in a chamber; and b) supplying a cooling medium to a nebulizer disposed upstream of the cooling zone to produce nebulized droplets of the cooling medium such that the nebulized droplets come into contact with the reducing flame in the cooling zone to thereby cause carbon nanoparticles to be entrained in the nebulized droplets.

First claim

What is claimed is:

1 . A method for manufacturing a nanocarbon material, comprising the steps of:
a) supplying an acetylene-based flammable gas into a torch nozzle at a flow rate such that an ignition at the torch nozzle produces a reducing flame in a cooling zone in a chamber; and b) supplying a cooling medium to a nebulizer disposed upstream of the cooling zone to produce nebulized droplets of the cooling medium such that the nebulized droplets of the cooling medium come into contact with the reducing flame in the cooling zone to thereby cause carbon nanoparticles to be entrained in the nebulized droplets.

2 . The method according to claim 1 , further comprising, after step b), a step c) of collecting the carbon nanoparticles-entraining nebulized droplets in a collector disposed downstream of the cooling zone to obtain a liquid pool of the carbon nanoparticles-entraining nebulized droplets.

3 . The method according to claim 2 , further comprising, after step c), a step d) of subjecting the liquid pool to separation so as to obtain a nanocarbon material.

4 . The method according to claim 3 , further comprising, after step d), a step e) of drying the nanocarbon material so as to obtain powders or flakes thereof.

5 . The method according to claim 2 , further comprising, after step c), a step of recycling a portion of the cooling medium in the liquid pool from the collector to the nebulizer to produce nebulized droplets from the recycled portion of the cooling medium.

6 . The method according to claim 5 , further comprising, prior to the recycling step, a step of filtering a portion of the liquid pool to obtain the portion of the cooling medium for recycling while leaving the nanocarbon material in the liquid pool.

7 . The method according to claim 1 , wherein the acetylene-based flammable gas includes acetylene and oxygen and is fed by acetylene and oxygen streams supplied through first and second conduits, respectively.

8 . The method according to claim 7 , wherein a flow ratio of the oxygen stream to the acetylene stream is not greater than 0.6.

9 . The method according to claim 1 , wherein the cooling medium is selected from the group consisting of water, ethylene glycol, glycerol, and lubricant oil.

Assignees

• Univ Nat Taiwan Normal

Inventors

• Teng Tun-Ping

Classifications

• C09C1/54

  Acetylene black; thermal black {; Preparation thereof (separation or recovery C09C1/487)} · CPC title

• C01B32/18 Primary

  Nanoonions; Nanoscrolls; Nanohorns; Nanocones; Nanowalls · CPC title

• C01B32/15

  Nano-sized carbon materials · CPC title

• C01B31/0293 Primary

  Chemistry & Metallurgy · mapped topic