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A coaxial cylindrical dbd reactor with adjustable eccentricity

A reactor, eccentricity technology, applied in chemical instruments and methods, chemical/physical/physical-chemical processes, chemical/physical/physical-chemical processes of energy application, etc. Simple and convenient effects of electrodes and barrier media

Active Publication Date: 2019-07-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing coaxial DBD reactor is mostly used for industrial purposes, in which the installation position of the inner electrode is fixed, and the inner electrode is not easy to replace
Therefore, the existing coaxial DBD reactor generally cannot study the relationship between the electrode structure and the gas treatment effect by adjusting the eccentricity and replacing the ground electrode.

Method used

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  • A coaxial cylindrical dbd reactor with adjustable eccentricity
  • A coaxial cylindrical dbd reactor with adjustable eccentricity
  • A coaxial cylindrical dbd reactor with adjustable eccentricity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A coaxial cylindrical DBD reactor with adjustable eccentricity, constituted as figure 1 As shown, including the frame body 100, the two ends of the frame body 100 are symmetrically provided with a fixed plate 110, the fixed plate 110 is provided with a fixed cover 200, a blocking medium 300 is provided between the two fixed covers 200, and the fixed cover 200 is provided with The stepped hole 210, the stepped hole 210 includes a large hole 211 located inside the fixed cover 200 and a small hole 212 located outside the fixed cover 200, the two ends of the blocking medium 300 are fixed in the large hole 211; the fixed cover 200 is provided with a horizontal The crossbeam 220 that wears aperture 212, is provided with straight groove 221 in the middle of crossbeam 220; The straight groove 221 of a fixed cover 200 is provided with adjustment base 400, is provided with adjustment screw 410 in the middle of adjustment base 400, and the small end of adjustment scre...

Embodiment 2

[0034] Embodiment two: if Figure 6 As shown, the barrier medium 300 is provided with a columnar internal electrode 700, and the center of the two ends of the columnar internal electrode 700 is provided with a screw hole 701, and the straight grooves 221 of the two fixed covers 200 are provided with plug screws 240. The screw 240 is connected with the screw hole 701 .

[0035] In this embodiment, the structure of the frame part is the same as that of Embodiment 1, and the filament internal electrode 600 is replaced by a columnar internal electrode 700, and the two ends of the columnar internal electrode 700 are screwed through the plug screws 240 in the straight groove 221. fixed.

[0036] The columnar inner electrode 700 is not limited to a cylinder, as long as both ends can be threaded.

[0037] The head of the plug screw 240 is provided with a third scoring line 241 . The advantage of using the plug screw 240 is that the plug screw 240 itself has a high geometric accurac...

Embodiment 3

[0039] Embodiment three: as Figure 7 As shown, the large hole 211 is provided with a seat 320, and the seat 320 is provided with a secondary stepped hole 321, and the two ends of the barrier medium 300 are set in the secondary stepped hole 321.

[0040] In this embodiment, both ends of the barrier medium 300 are fixed on the seat 320 , and the seat 320 is fixed on the fixed cover 200 . The inner diameter of the auxiliary stepped hole 321 on the seat 320 changes with the diameter of the barrier medium 300 , but the outer diameter of the seat 320 is constant. Therefore, by replacing the supporting seat 320 and the barrier medium 300 in the device of this embodiment, it is very convenient to study the influence of the diameter of the barrier medium 300 on the dielectric barrier discharge. At the same time, what is changed in this embodiment is the barrier medium, which does not conflict with the changed inner electrodes in the first and second embodiments.

[0041] In addition...

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Abstract

The invention discloses a coaxial cylinder-typed DBD (dielectric barrier discharge) reactor with an adjustable eccentric distance. The reactor comprises a frame body, two ends of the frame body are separately provided with a fixing board, a fixing cover is arranged in the middle of each fixing board, stepped holes are arranged in the middle of each fixing cover, and a blocking dielectric is installed between the two fixing covers through the stepped holes; a cross beam is arranged in the small hole of each stepped hole, and a straight groove is arranged in the middle of each cross beam; a regulating base is arranged in the straight groove of one fixing cover, an adjusting bolt is in threaded connection with the middle of the adjusting base, the adjusting bolt is provided with a counter bore, the interior of the counter bore is provided with a regulating spring, and a first thin filament through hole is arranged at the bottom of the counter bore; a fixing base is arranged in the straight groove of another fixing cover, a second thin filament through hole is arranged in the middle of the fixing base, and the side of the second thin filament through hole is provided with a side hole;and a thin filament inner electrode is arranged in the blocking dielectric, and two ends of the thin filament inner electrode are separately arranged on the regulating base and the fixing base. The reactor provided by the invention can adjust the eccentric distance of the inner electrode, and is very convenient for replacing the inner electrode and the blocking dielectric.

Description

technical field [0001] The invention relates to a coaxial cylindrical DBD reactor, in particular to a coaxial cylindrical DBD reactor with adjustable eccentricity. Background technique [0002] Dielectric barrier discharge, referred to as DBD in English, is a non-equilibrium gas discharge with an insulating medium inserted into the discharge space, also known as dielectric barrier corona discharge. Using dielectric barrier discharge to generate low-temperature plasma is a new type of discharge post-treatment technology. It has With the advantages of low cost, low energy consumption and high efficiency, it is mainly used in industrial and civil waste gas treatment. [0003] There are mainly two types of DBD reactor structures: plate type and coaxial type. Among them, the coaxial DBD reactor can be simplified as setting a coaxial, generally linear internal electrode in a barrier medium wrapped with a high voltage electrode. Existing coaxial DBD reactors are mostly used for i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/08
CPCB01J19/0053B01J19/08B01J2219/0809B01J2219/0824B01J2219/0849B01J2219/0896
Inventor 何湘宁邱祁李武华王帅刘星亮
Owner ZHEJIANG UNIV
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