(Yuanchen Technology) In recent years, China's industrial restructuring has further deepened, and the structure of the power market has also undergone significant changes, constantly deepening the difficulty of peaking in the national grid; the state has also continued to introduce various peaking policies to encourage thermal power plants, especially large coal-fired power plants, to actively participate in grid peaking; while the existing thermal power units are facing increasingly serious overcapacity, the decline in annual generation hours available, the continued high price of coal, the further development of renewable energy and the promotion of power market reform, all making thermal power units face the new norm of becoming peaking units.

At present, most power plants are retrofitted with SCR denitrification systems, but for the low load (mostly 30~40% load) operation of the units in deep peaking, the flue gas flow decreases and the flue gas temperature decreases, the conventional power SCR denitrification catalysts are not applicable, which in turn causes problems such as excessive NOx emissions and increased ammonia escape, bringing negative impacts to the enterprises.

In response to the new normal of deep peaking in power industry, Yuanchen Technology Research Institute has successfully developed YC-CHJ-18DL250S and YC-CHJ-20DL250S wide temperature difference denitrification catalysts in the laboratory for half a year, which can effectively adapt to the special working conditions of deep peaking of power units with lower flue gas flow and lower temperature. The performance of this product has been verified by the full-size device of Anhui Kanfir Testing Technology Co., Ltd. to meet the requirements of flue gas NOx removal in both high and low load operation, with high activity, low ammonia escape rate (<3ppm) and small SO2/SO3 conversion rate (less than 1%) in the range of 250-400°c. The product will undergo long-term performance verification in the field working conditions at Wanergy Group Hefei Power Generation Co., Ltd.

The future application of this product will provide power plant customers with a solution to the problem of substandard flue gas NOx and other pollutant emissions in the process of deep conditioning. Compared with conventional power catalysts, the application of this product can avoid the reheating of flue gas to ensure the catalyst performance, which can effectively achieve energy saving and emission reduction for customers. The promotion and application of Yuanchen Technology's power wide temperature difference denitrification catalyst will add a colorful touch to the power industry's goal of achieving carbon peak and carbon neutrality.