Coke oven flue gas low temperature denitrification industrial demonstration device
Recently, the coke oven flue gas low-temperature denitrification industrial demonstration unit using the Dalian Institute of Chemical Physics, Chinese Academy of Sciences has successfully operated in Jiangsu Yanzhou Coal Coking Co., Ltd.
The excessive emission of nitrogen oxides from coke oven flue gas has always been a technical problem that cannot be solved by the coal coking industry. In 2013, Dalian Institute of Chemical Industry focused on coke oven flue gas denitrification technology and developed a high-efficiency low-temperature denitration catalyst. The catalyst has many advantages such as low operating temperature, high denitration precision, strong sulfur resistance, large operating airspeed, and the like. In 2014, the Institute took the lead in coke oven flue gas SCR denitrification industrial side-by-side experiment in the coking plant, and verified the performance of the low-temperature denitration catalyst under the actual working conditions, and accumulated sufficient experience for the subsequent implementation of coke oven flue gas SCR denitration project. Has laid a solid technical foundation. In 2015, the institute cooperated with Jiangsu Elwwater Environmental Protection Equipment Engineering Co., Ltd. and Jiangsu Yanzhou Coal Coking Co., Ltd. to jointly carry out the construction of coke oven flue gas low temperature denitrification industrial demonstration equipment. Among them, Dalian Institute of Chemical Industry provides denitrification for demonstration equipment. Catalyst and process technology software packages.
With the joint efforts of the three parties, the project completed various tasks such as design, civil construction, catalyst production and equipment installation and commissioning within a short period of five months. The project was successful on November 17th.
At present, the system is running well. The on-site CEMS monitoring results show that the average denitration rate of coke oven flue gas exceeds 90%, and the local time exceeds 95%. The concentration of nitrogen oxides at the outlet of the reactor can be less than 70mg/m3, far better than the national regulations. Emission limit.
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