脱硫、脱硝用脉冲电源的设计及工业应用

Design and industrial application of pulse power supply for desulfurization and denitration

使用常规半导体开关和脉冲磁压缩技术开发了平均功率15 kW、脉冲上升时间500 ns、重复频率300 Hz的脱硫、脱硝用脉冲电源。配备了9台电源的脉冲电晕等离子体脱硫、脱硝装置,在1台130 t/h蒸发量的燃煤锅炉上配套使用,取得了59%的脱硫效率、53%的脱硝效率和77%的除尘效率。

A type of pulsed power for desulfuration and denitration has been developed with ordinary semiconductor switches and magnetic pulse compression technology. Its design specifications are as follows: an average power of 15 kW, a voltage rising time of 500 ns and a pulse repetition rate of 300 Hz. A pulsed plasma reactor for simultaneous removal of SO;and NO;was constructed with 9 pulsed powers and was tested in a coal-fired boiler with 130 t/h evaporation capacity. The test results showed removal efficiency for SO;of 59%, removal efficiency for NO;of 53%, and removal efficiency for dust of 77%.