Dielectric barrier discharge plasma emission spectrometer based on online detection

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 ...

AI Technical Summary

Problems solved by technology

[0004] Real-time on-line monitoring of halogen-containing organic compounds in stationary source flue gas has not yet formed a standard

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