The Research Of Characteristic Of The Transform Between The Electricity And Heat In DBD

Removal of sulfur dioxide and nitric dioxide with non-thermal plasma is a new technology to treat atmospheric pollutants. In the field of removing industrial exhaust, this technology shows more advantages against the traditional methods, such as faster reaction rate, low energy cost and less secondary pollutants, etc. As a basic application research, we combined the experiments with the Theory of Heat Conduction, the Theory of Electrostatics and the Theory of Dielectric Barrier Discharge, and focused on the characteristic of the increase of the catalyst's temperature in the reactor filled with non-equilibrium discharge, which used in the removal of NOx and SO2 using the plasma-chemical hybrid process. In this paper, we have studied the relationships between the characteristic of the increase of the catalyst granual temperature in the reactor and different working conditions such as the distance of DBD, the mesh of wire screens, the kind of reactors etc. In order to compare different conditions conveniently, we chose two kinds of reactor as our research object- one is composed of wire and pipe, the other is composed of two plates and both of them working in many different conditions, such as different distance of DBD, different mesh of wire screens, and different booster export voltage etc. Having done the research, we can conclude that, to have higher heat quotient, there is a best distance of DBD with a given mesh of wire screens, and correspondingly there is a best mesh of wire screens with a given distance of DBD. The voltage value influences the temperature increasing rate of the catalyst granual significantly. The characteristic of the discharge in the Line-pipe type is more complicated than that in the plate- plate type. The characteristic of the discharge has something to do with the object filled in the reactor. According to the Theory of Heat Conduction, we educed a function of the temperature increasing rate in the Line-pipe type (with bigger radius), and its results accord with the experiment results well. Combined with the theory of electrostatics, we obtain a function describing the distribution of the electric field in the Line-Pipe type reactor, which is reasonable.