Recently, a low-temperature DeNOx industrial demonstration unit has been successfully carried out in Jiangsu Yizhou Coking Co., Ltd. for removal of NOx from coke oven flue gas. This unit was loaded with a kind of high-efficiency low-temperature DeNOx catalyst developed by DNL0901 from DICP.
NOx emissions from coke oven flue gas have been a technological problem in the coking industry. Since 2013, DNL0901 has been developing SCR catalyst for NOx removal from coke oven flue gas. In 2014, an industrial pilot SCR system was commissioned and an instant operation success was achieved at Baofeng Energy Ltd, Yinchuan, Ningxia province. This efficient SCR catalyst showed a very high and stable NOx reduction efficiency with 98~99% during 1200 hours running. Based on these research works, DNL0901 from DICP, Jiangsu WOTE Environmental Protection Equipment Engineering Co. Ltd and Jiangsu Yizhou Coking Co., Ltd join together to establish the low-temperature DeNOx industrial demonstration unit for reduction of NOx emissions from the coke oven.
At 27 November 2015, this unit was put into operation successfully. According to the on-line CEMS system monitoring data, This efficient SCR catalyst showed a very high and stable NOx reduction efficiency with 90~95% and the concentration of NOx in effluent maintained less than70 mg/m3.
The Industrial Demonstration SCR System for Coking Process is Successfully Commissioned（Photo by Hao CHENG）
The successful operation of the unit has a great demonstration effect for the NOx reduction in the coking industry. The promotion of this technology will provide annual emission reduction of millions of tons of NOx and make a great contribution to atmospheric environmental management. （Text/ Photo by Hao CHENG）