The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2012
Filed:
Sep. 29, 2009
Joo Hee Han, Daejeon, KR;
Jin Seo Lee, Daejeon, KR;
Seung-hoe DO, Daejeon, KR;
Seong Cheol Hong, Daejeon, KR;
Joo Hee Han, Daejeon, KR;
Jin Seo Lee, Daejeon, KR;
Seung-Hoe Do, Daejeon, KR;
Seong Cheol Hong, Daejeon, KR;
Hanwha Chemical Corporation, Seoul, KR;
Abstract
Provided is a continuous method and apparatus for purifying carbon nanotubes. Carbon nanotube is fed together with solvent into a preheater via a heat exchanger to produce a carbon nanotube mixture. The carbon nanotube mixture is preheated at 100 to 370° C. Then, the carbon nanotube mixture is purified in a purifying reactor under a subcritical water condition of 50 to 400 atm. The resulting purified product is cooled down to 0 to 100° C. and depressurized into 1 to 10 atm by feeding the purified product into a cooling down and depressurizing part via the heat exchanger. Finally, the cooled and depressurized product is recovered.