Dielectric barrier discharge plasma emission spectrometer based on online detection

A dielectric barrier discharge and plasma technology, which is used in instruments, measuring devices, scientific instruments, etc., can solve the problem that the real-time online monitoring of halogen-containing organic compounds has not yet formed a standard, etc., and achieve the effect of simple instrument structure and fast analysis.

Active Publication Date: 2020-12-18
BEIHANG UNIV
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Problems solved by technology

[0004] Real-time on-line monitoring of halogen-containing organic c

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  • Dielectric barrier discharge plasma emission spectrometer based on online detection
  • Dielectric barrier discharge plasma emission spectrometer based on online detection
  • Dielectric barrier discharge plasma emission spectrometer based on online detection

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[0049] The present invention will be described in detail below with reference to the accompanying drawings.

[0050] In the present invention, a dielectric barrier discharge plasma emission spectrometer based on on-line detection, the structure of which is as follows figure 1 As shown, including two high-purity helium cylinders (1A, 1B), two mass flow meters (2A, 2B), thermal desorption instrument 13, adsorption tube 3, injection port 4, gas mixer 5, plasma power supply 6. An oscilloscope 7 , a dielectric barrier discharge plasma discharge tube 8 , a polymethyl methacrylate lens (resin lens) 9 , an optical fiber spectrometer 11 and a computer 12 . The adsorption tube 3 and the injection port 4 are arranged at the upper end of the thermal desorption instrument 13 .

[0051] in, image 3 The shown structure of the dielectric barrier discharge plasma discharge tube 8, the dielectric barrier discharge plasma discharge tube 8 is composed of a tube body 81, a first section of gold...

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Abstract

The invention discloses a dielectric barrier discharge plasma emission spectrometer based on online detection, and belongs to the technical field of environmental monitoring. The spectrometer comprises a high-purity helium cylinder, a mass flow meter, an adsorption tube, a sample inlet, a thermal desorption instrument, a gas mixer, a plasma power supply, an oscilloscope, a dielectric barrier discharge plasma discharge tube, a resin lens, an optical fiber spectrometer and a computer. The high-purity helium bottle, the mass flow meter, the adsorption tube, the sample inlet and the gas mixer forma gas path transfer structure to finish the sample injection process. The plasma power supply, the oscilloscope and the dielectric barrier discharge plasma discharge tube realize an electrical connection structure so that the sample gas generates stable plasma. The resin lens, the optical fiber spectrometer and the computer form an optical signal transfer and data processing structure, digital signal conversion and processing are carried out on the spectrum generated by the plasma, and the purpose of real-time online detection of the halogen content is achieved. The spectrometer is high in flue gas detection efficiency and low in cost.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, in particular to rapid detection equipment for halogen-containing pollutants in incineration flue gas. Background technique [0002] In recent years, the amount of harmless treatment of domestic waste in my country has increased rapidly. Domestic waste incineration is an effective way to treat solid waste in a harmless and reduced manner. The main factor for the increasing processing volume. [0003] However, the flue gas produced by the incineration of domestic waste will lead to the emission of low-volatile and semi-volatile organic halogen compounds such as chlorobenzenes, polychlorinated biphenyls, dioxins, bromobenzenes, and bromophenols, which will bring great harm to the atmospheric environment. Pollution. Among them, the emission of chlorinated organic substances, especially the emission of dioxins, will cause serious harm to the environment and pose a serious threat to ...

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Application Information

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IPC IPC(8): G01N21/73G01N21/01
CPCG01N21/01G01N21/73
Inventor 孙轶斐孙明武李文沛
Owner BEIHANG UNIV
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