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VACUUM ›› 2021, Vol. 58 ›› Issue (4): 87-92.doi: 10.13385/j.cnki.vacuum.2021.04.16

• Vacuum Technology Application • Previous Articles     Next Articles

Experimental Study on the Working Characteristics of Steam Plasma Torch

TU Jun1, SONG Wen-jie1, ZHANG Bin1, YU De-ping1, LI Yi-hong2   

  1. 1. School of Mechanical Engineering, Sichuan University, Chengdu 610065, China;
    2. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:2020-12-07 Online:2021-07-25 Published:2021-08-05

Abstract: Steam plasma jet has the advantages of higher security, plenty of hydroxyl component, good environmental protection and cheap working medium, etc. It is a promising tool in the hazardous waste treatment and chemical synthesis. However, as steam is easy to condense during the transportation process, it will seriously affect the stability of plasma torch as well as its service life, limiting its wide application in industries. In this paper, a series of techniques were proposed to prevent the condensation of the steam. A special steam plasma torch was designed. A data acquisition system and optical emission spectrometer were used in experiments to reveal the working characteristics of this steam plasma torch. The experimental results show that the stability of the as-designed steam plasma generator is better than that of the conventional one. In addition, the arc voltage increases with the increases of the arc current or steam flow rate. As the special substance in steam plasma, the hydroxyl′s relative content increases with the increase of arc current, but decreases with the increase of the steam flow rate.

Key words: steam plasma torch, volt-ampere characteristics, spectral analysis, hydroxyl

CLC Number: 

  • O533
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