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Method and device for strongly oxidizing ketones organic pollutants by using plasma

A technology of organic pollutants and plasma, applied in separation methods, chemical instruments and methods, gas treatment, etc., to achieve the effect of improving degradation efficiency

Active Publication Date: 2019-02-01
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects and deficiencies existing in the existing plasma catalytic technology in the treatment of ketone pollutants, and provide a method for plasma enhanced oxidation of ketone organic pollutants, by combining nanofiber catalysts and single Combination of atomic catalysts is used to co-treat ketone organic pollutants, reducing O on the basis of lower energy consumption 3 , CO and other harmful by-products, increasing CO 2 Selectivity, enhance the degradation efficiency of ketone organic pollutants

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  • Method and device for strongly oxidizing ketones organic pollutants by using plasma

Examples

Experimental program
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Effect test

Embodiment 1

[0037] like figure 1 , a device for plasma enhanced oxidation of ketone organic pollutants, comprising a quartz tube 1, the two ends of the quartz tube 1 are respectively provided with an upper plug 3 and a lower plug 4 for sealing the quartz tube; the upper plug 3 An air inlet 2 is provided, and an air outlet 5 is provided on the lower plug 4; the outer wall of the quartz tube 1 is covered with a copper foil grounding electrode 6, and the inner wall is coated with MnO 2 The nanofiber catalyst 7 is provided with a Co single-atom graphite zigzag high-voltage electrode 8 on the inner axis of the quartz tube 1, and the two ends of the Co single-atom graphite zigzag high-voltage electrode 8 are fixedly connected to the upper plug 3 and the lower plug 4 respectively; The outside of the quartz tube 1 is provided with a high-voltage power supply 9 connected to the copper foil ground electrode 6 and the Co single-atom graphite zigzag high-voltage electrode 8. The length of the copper ...

Embodiment 2

[0041] A device for plasma enhanced oxidation of ketone organic pollutants, comprising a quartz tube 1, the two ends of the quartz tube 1 are respectively provided with an upper plug 3 and a lower plug 4 for sealing the quartz tube; the upper plug 3 is provided with There is an air inlet 2, and the lower plug 4 is provided with an air outlet 5; the outer wall of the quartz tube 1 is covered with a ground electrode 6, and the inner wall is coated with MnO containing 5.0 wt% Mn 2 Nanofiber catalyst 7, Fe single-atom graphite sawtooth electrode 8 is arranged on the inner axis of quartz tube 1, and the two ends of Fe single-atom graphite sawtooth electrode 8 are respectively fixedly connected with upper plug 3 and lower plug 4; said quartz tube 1 The outside is provided with a high-voltage power supply 9 connected to the ground electrode 6 and the Fe single-atom graphite zigzag high-voltage electrode 8 respectively. The ground electrode 6 is a copper mesh with a length of 10 mm, an...

Embodiment 3

[0044] A device for plasma enhanced oxidation of ketone organic pollutants, comprising a quartz tube 1, the two ends of the quartz tube 1 are respectively provided with an upper plug 3 and a lower plug 4 for sealing the quartz tube; the upper plug 3 is provided with There is an air inlet 2, and the lower plug 4 is provided with an air outlet 5; the outer wall of the quartz tube 1 is covered with an aluminum foil ground electrode 6, and the inner wall is coated with MnO containing 5.0 wt% Mn. 2 A nanofiber catalyst 7 (100 mg), a Ni single-atom graphite sawtooth electrode 8 is arranged on the central axis of the quartz tube 1, and the two ends of the Ni single-atom graphite sawtooth electrode 8 are fixedly connected to the upper plug 3 and the lower plug 4 respectively; The outside of the quartz tube 1 is provided with a high-voltage power supply 9 connected to the aluminum foil ground electrode 6 and the Ni single-atom graphite serrated electrode 8, the length of the aluminum fo...

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Abstract

The invention discloses a method and device for strongly oxidizing ketones organic pollutants by using plasma. The method comprises the following steps: placing a nano-fiber catalyst and a monatomic catalyst in a low-temperature plasma atmosphere for treating the ketones organic pollutants. The device comprises a shell, and an upper plug and a lower plug which are used for closing the shell are separately arranged at the two ends of the shell; and a grounding electrode sleeves the outer wall of the shell, a nano-fiber catalyst coats the inner wall of the shell, a monatomic graphite electrode is arranged on the central axis of the inside of the shell, and the two ends of the monatomic graphite are separately fixedly connected with the upper plug and the lower plug. A sawtooth graphite electrode is used as a high-voltage electrode to form uniform and fine micro-discharge, the catalyst which coats the inner wall of a quartz tube is combined to the monatomic graphite electrode, thus, double catalysis is achieved, the ketones organic pollutant degradation efficiency is improved while energy consumption is reduced, and the ozone decomposition rate and the carbon dioxide selectivity in the ketones organic pollutants are improved.

Description

technical field [0001] The invention belongs to the technical field of organic waste gas degradation. Specifically, it relates to a method and device for plasma enhanced oxidation of ketone organic pollutants. Background technique [0002] Since the 21st century, with the gradual acceleration of my country's industrialization process, a large number of paints, inks, and textile auxiliaries containing volatile organic compounds (VOCs) have been consumed in large quantities, and my country's VOCs emissions have increased sharply at an annual growth rate of 11% to 12%. ; Long-term exposure to VOCs may cause irritation, headaches, dizziness, and even cancer. In January 2018, the Ministry of Environmental Protection issued the "Notice on Strengthening the Monitoring of Volatile Organic Compounds in Waste Gases from Stationary Pollution Sources", indicating that the control of VOCs is imminent. [0003] Ketones are one of the most abundant VOCs, mainly including acetone, cyclohex...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/72
CPCB01D53/8668B01D2259/818
Inventor 杜长明巩向杰仇荣亮熊亚韦献革刘育
Owner SUN YAT SEN UNIV