Diesel particulate trap offline regeneration by ozone oxidation
柴油机微粒捕集器臭氧再生法离线再生

The diesel particulate trap regeneration by ozone oxidation was studied experimentally.The test system was consisted by diesel engine(R175),particle filter(Φ90 mm×150 mm) and ozone generator(CF-G10).The results indicate that the diesel particulate trap could be regenerated effectively at 190℃.The DPF regeneration efficiency could be up to 90% by the regeneration gas come from DPF upstream side,but ozone penetrated when regeneration efficiency was about 65%,and the ozone utilization rate dropped.As the load larger or the particulate traped time longer,the ozone penetrated earlier.Kept the ozone supply,as the flow of regeneration gas larger,the regeneration effect became more obvious.The ozone penetrated later by the regeneration gas coming from DPF downstream side,but after the ozone penetrated,the regeneration rate was so slowly that the DPF was hardly to be regenerated,the regeneration efficiency was lower than 70%.The results showed that it was feasible for the DPF offline regeneration by ozone oxidation,and the further study on improving the ozone utilization was needed.