Waste gas treating corona discharge method and apparatus homogeneously reinforced with heterogeneous catalyst
A heterogeneous catalyst and corona discharge technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of limited contact area, increased filling medium, and it is difficult to make full use of catalyst reactivity, etc. Achieve the effect of increasing the contact area, sufficient degradation reaction, and enhancing the efficiency of waste gas treatment
Active Publication Date: 2007-06-06
ZHEJIANG UNIV
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Problems solved by technology
Due to the limited contact area of the solid catalyst, it is difficult to make full use of the reactivity of the catalyst in this reaction mode.
On the other hand, for the packed reactor, the filling medium is increased, the gas resistance is increased, and the processing capacity of the reactor and the large-scale and high-flow industrial application are restricted.
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[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] As shown in Figure 1 and Figure 2, the present invention includes:
[0021] 1) Exhaust gas treatment system: including a cylindrical insulating shell 1 with an exhaust gas inlet 10 and a purified gas outlet 2 at both ends, a cylindrical metal mesh ground electrode 9, a high-voltage power supply 11, two insulating electrode brackets 12 and a hollow The nozzle corona electrode 13; the inner wall of the cylindrical insulating shell 1 is equipped with a cylindrical metal mesh ground electrode 9, and the hollow nozzle corona electrode 13 is installed in the center of the cylindrical metal mesh ground electrode 9, and is fixed by the insulating electrode brackets 12 at both ends, and the high voltage The positive pole of the power supply 11 is connected to the rotating nozzle type metal corona pole 13, and the negative pole is grounded;
[0022] 2) Ca...
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The present invention discloses waste gas treating corona discharge method and apparatus homogeneously reinforced with homogeneous catalyst. The catalyst solution is first atomized in a atomizing chamber and then sprayed through the metal nozzle into the plasma corona region for homogenizing and catalyzing in the plasma reactor. Inside the corona discharging reactor, the free radical source gas molecules are excited through corona discharging to produce great amount of high activity free radicals, which produces oxidation or reduction with the pollutant gas molecule entering the reactor to degrade the pollutant. Homogenizing the catalyst can raise the efficiency of corona discharge to excite free radical, increase the yield of free radical greatly and raise the pollutant degrading efficiency obviously.
Description
technical field [0001] The invention relates to the technical field of waste gas treatment methods and devices, in particular to a method and device for treating waste gas by enhancing corona discharge through homogenization of heterogeneous catalysts. Background technique [0002] In recent years, corona discharge exhaust gas treatment, as a low-temperature plasma treatment technology, has been widely studied and gradually put into application. The chemical reactions in low-temperature plasma are mainly completed by the excitation of high-energy electrons generated by gas discharge. The interior of low-temperature plasma is rich in electrons, ions, free radicals and excited molecules. Among them, high-energy electrons collide with gas molecules (atoms) inelastically, and the energy is converted into the internal energy of ground state molecules (atoms), and a series of processes such as excitation, dissociation and ionization occur, so that the gas is in an activated state...
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IPC IPC(8): B01D53/74B01D53/86
Inventor 吴祖成康颖李明波高翔骆仲泱
Owner ZHEJIANG UNIV