Developed And The Plasma Reactor Of The Pulse Power Energy Injection Efficiency

The DeSO2 and DeNOx process by PPCP technology has been the recent research focus because of its advantages over traditional treatment methods for flue gases. But there are two problems to hinder it for industrial application. One is a high-voltage pulse generator with high average power, and the other is the energy efficiency. Therefore, in this paper, the high-voltage pulse generator and the energy efficiency are researched on to make generators for industry and enhance the energy efficiency. Experiments and some results are shown as follows:1. A 100kV/lkW high-voltage pulse generator is researched on by method of the academic calculation and simulation. The results are as same as those of the experiment, and the method of making high-voltage pulse generator is mastered.2. The generator is tested, and experiments of the match for several reactors are carriedout, and then the energy efficiency is evaluated. The results of the average power 1kW inserted into reactors, repetition frequency 0~300Hz, rise-time of the pulse about 200ns, pulse- width 500ns on reactors and energy efficiency 75% are gained.3. The testing system of the pulse voltage and current is constructed, and a line-plate reactor is employed according to industrial request to gain data of the pulse voltage and current. Three characters of the pulse corona discharge including no corona and weakly corona and strong corona are discussed.4. The model of the pulsed corona reactor that is a parallel connection of the static capacitor and the variable resistor is constructed, and a way to evaluate the energy efficiency is proposed and a program is worked out.5. The current of the reactor is decomposed into charge (capacitive) current and corona (resistive) current, and results of the relation of the resistor and voltage and the relation of the and Ep are obtained: At stage of rising voltage, the resistor decreases rapidly with resumable phenomenon; At the peak voltage, the resistor can be stabilized in relative range; The resistor resumes with decreasing when voltage decreasing; The relation of and Ep is approximately linearity.6. A 200kW pulse power is made and employed in the industrial scale facility with 12000~20000Nm3/h flue gas.7. A network of the resistor and inductance in series is proposed and employed to match the 200kW generator and reactor.8. With flue gas stream at 4,500-11,000Nm3/h, and about 60~70C at entrance of the reactor, and about 1:1 stoichiometric equivalence of NH3 and SO2, and continuum stable operation of the facility, and single electric field integrated with the plasma reactor to collect the by-product, the results including good performance of DeSO2 and collecting by-product with efficiency 20-30% by activated ammonia and vapor, and more than 85 percent collecting efficiency of the by-product by single electric field, and more than 95:5 ratio of SO42-:SO32- in by-product, and more than 90 percent efficiency of DeSO2 are gained.