Small-diameter carbon nanotube purification system for heat recovery

Abstract

The invention relates to a small-diameter carbon nanotube purification system for heat recovery. The small-diameter carbon nanotube purification system comprises a fluid reaction bed, an acid storage tank, a grinder, two heat exchangers and two filter presses, acid steam discharged out from the fluid reaction bed is fed into one heat exchanger, acid cooling fluid discharged by the heat exchanger is fed into the acid storage tank, small-diameter carbon nanotube crude solution discharged out from the fluid reaction bed is fed into another heat exchanger, the small-diameter carbon nanotube crude solution cooled by the heat exchanger is fed into one filter press, the acid solution discharged out form the filter press is fed into the acid storage tank, small-diameter carbon nanotube crude press cake discharged from the press filter is fed into the grinder, and the small-diameter carbon nanotube crude cake ground by the grinder is fed into the next filter press to obtain finished small-diameter carbon nanotubes. Heat energy in the fluid reaction bed is fully utilized, heat energy in acid steam reacted and released is absorbed by the jacketed heat exchanger, and heat energy in the small-diameter carbon nanotube crude solution is absorbed by the plate heat exchanger.

Description

technical field [0001] The invention relates to a small-diameter carbon nanotube purification system for heat energy recovery, and belongs to the technical field of carbon nanotube production. Background technique [0002] A carbon nanotube is a tubular nanomaterial composed of carbon atoms. Tube walls containing multiple layers of carbon atoms are called multi-walled carbon nanotubes (MWNTs), and those containing a single layer of carbon atoms are called single-walled carbon nanotubes (SWNTs). Carbon nanotubes have attracted the attention of researchers for their unique structure and excellent performance since they were discovered. It has potential application prospects in new conductive / high-strength composite materials, electronic devices, and catalyst carrier materials. [0003] The preparation techniques of carbon nanotubes mainly include: arc discharge method, laser etching method, chemical vapor deposition method, solid phase pyrolysis method, flame synthesis metho...

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Problems solved by technology

Although this patent introduces the removal of some impurities in crude carbon nanotubes, it does not introduce how to separate strong oxidizing acids and impurities in deionized water so that they can be reused, which is not conducive to industrial mass production applications

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