In order to improve activity of the catalysts used in SCR DeNOx system of flue gas, a series of catalysts activated by different activating liquids under varied conditions in boiler directly were conducted. Then these catalysts were characterized by SEM, FT-IR and BET technology. And NO conversions of the activated catalysts were studied and compared with that of inactivated catalyst. The above experiment shows that NO conversion of the activated catalyst can be up to 99%, which 30% higher than that of inactivated catalyst, so activity of catalysts were improved greatly. Furthermore, optimal activating liquid labeled L2 and effective technology parameters were gained in the experiment.

This paper expounds the definition and types of private standards, the background and development of the private standards, and analyzes the characteristics of private standard, its positive effects and restraining effects. Two typical cases of pears and meat products are selected, and investigation and study are carried on these two types of products, and it is found that the implementation of the private standard indeed improves the market competitiveness of the Chinese production and supply enterprises. At the same time, the implementation of the private standards has positive effects on improving enterprise efficiency, increasing profits and improving the social and environmental performance, etc. Finally, some policy Suggestions on the impact of private standards on international trade are given.