Beiyuan Cement NOx Ultra-low Emission Technical Reform Project Successfully Passed the Performance Assessment

2025, the technical renovation project of NOx ultra-low emission denitrification of Line 1 of Shaanxi Beiyuan Group Cement Co., Ltd., which was constructed by China Aviation Technology Beijing Co., Ltd. (Hereinafter referred to as "AVIC Kechuang Beijing Co., Ltd."), passed the performance test and acceptance smoothly. So far, the 1 # and 2 # production lines of Beiyuan Cement have completed the performance test. The 1 # and 2 # lines of

Shaanxi Beiyuan Group Cement Co., Ltd. are all carbide slag production lines. The 1 # line uses wet slag and the 2 # line uses dry slag. Pyroredox ® denitration technology of Humboldt (KHD) of Germany, new decomposition furnace and PYROTOP ® new technology are used to transform the kiln inlet system of the two lines. At the same time, the project is supplemented by the "ammonia removal tower" process to remove ammonia from the tail gas. After

the retrofit was put into operation, the production was stable, the denitrification effect was remarkable, the NOx emission concentration was less than 50 mg/Nm3 (10% O2 content benchmark), the ammonia consumption per ton of clinker was less than 3. 5 kg, and the ammonia slip was less than 5 mg/m3. It meets the ultra-low emission standard of Shaanxi Provincial Department of Ecology and Environment. Before

reconstruction of Line

1 After

reconstruction of Line 1 Before

reconstruction of Line 2 After