China Bao Wu Group actively practice the concept of environmental management and green development, is gradually implemented and take root.
On November 25, Baosteel Engineering Co., Ltd., Baosteel Engineering EIA Center, China Iron and Steel Association, China Coking Industry Association, Shanghai Municipal Environmental Protection Bureau and representatives of more than 20 domestic iron and steel enterprises attended the "Baosteel sinter flue gas denitrification , Coke oven flue gas purification project put into operation and technical seminars, "came a welcome message, as the first set of flue gas denitrification, off two VA British demonstration project Baosteel Engineering Group adopted the total package Baosteel four additional sintering sintering After the gas denitrification project is completed and put into production, its nitrogen oxide emission concentration can be controlled below 50mg / standard cubic meters, the denitrification efficiency can reach more than 90%, the operating cost is about 4-6yuan / ton sinter, 0.5 ng / standard cubic meters or less, to meet the ultra-clean power industry emissions requirements. This means that Baosteel to create these advanced technical indicators, will lead the domestic sintering flue gas denitrification take off VA VA to another new heights.
At the same time, the first implementation of a coke oven flue gas desulfurization and denitrification project by Baosteel Co., Ltd., through technological innovation process, the lowest concentration of sulfur dioxide emissions can reach 20 mg / standard cubic meters below the minimum emission of nitrogen oxides can be controlled at 50 Mg / standard cubic meters below the coke oven flue gas inlet temperature of 165 degrees, the operating cost of about 12 yuan / ton coke, the efficiency can reach more than 90% of the relevant pollutant emissions parameters to fully meet the current national coking industry in particular Emission standard requirements.
According to experts, Baosteel's fourth sinter addition flue gas denitrification project is the fourth project in the world to carry out selective catalytic reduction denitration after Pohang of South Korea, China National Taiwan Steel and Austrian Steel Association. The project uses Sintering selective catalytic reduction S-SCR technology, Baosteel project is the introduction of advanced technology, based on the joint Baosteel Ironworks, after two R & D with Baosteel gradually formed with the characteristics of sintered flue gas denitrification S-SCR technology . The technology not only absorbs the technical advantages of the existing VAF denitration VAI technology in the world, but also has the core technologies of innovative improvement and upgrading according to the actual situation of the domestic steel industry. The technologies include low calorific value blast furnace gas heating technology, high temperature flue gas and Low-temperature sintering flue gas direct mixing techniques, etc., including. Baosteel has innovative features and independent intellectual property rights of sintered flue gas denitrification S-SCR technology, with strong market competitiveness, a clear technical cost-effective parameters will enable more users to feel the advanced nature of green production.
The desulfurization and denitrification project of a coke oven flue gas desulfurization project of Baosteel Co., Ltd. adopts SDA sodium-based desulfurization and S-SCR denitrification technologies. It is the total contract mode of Baosteel Engineering and Technology Group. Based on the introduction of SDA desulfurization technology and medium-temperature SCR denitrification technology, Baosteel Co., After two R & D gradually formed, with Baosteel's innovative coke oven flue gas desulphurization and denitration technology. The technology takes full account of the characteristics of coke oven flue gas, has developed a pre-heater furnace temperature regulation, heat cycle heat recovery, flue gas negative pressure and smoke temperature adaptive control, catalyst regeneration and other core technologies. In particular, the heat-exchange heat cycle recovery technology can not only reduce the heating gas consumption of the denitration part of the flue gas, but also achieve a temperature increase range of less than 20 degrees for the denitrification function, and greatly reduce the temperature of the raw coke oven flue gas Requirements, to achieve as low as 130 degrees coke oven flue gas desulfurization and denitrification, and denitrification fuel consumption is still controlled within 20 degrees temperature rise. As a result, a solid foundation is provided for reducing the energy consumption of the process for coke oven production. As the fourth direct user in the world to implement selective catalytic reduction technology for denitrification, the feedback from Baosteel Ironworks is that since the first phase of two coke oven flue gas cleaning systems were put into operation at the end of September 2016, the equipment Stable and reliable operation, desulfurization and denitrification effect is obvious, all the parameters fully meet the recently promulgated in our country the most stringent "new Environmental Protection Law," the relevant discharge requirements.
Next, Baosteel Engineering and Technology Group will continue to work closely with Baosteel Co., Ltd. On the basis of summing up experience, efforts will be made to promote S-SCR technology of sintering flue gas and flue gas desulphurization and denitrification technology of coke oven in order to speed up green social development Process, support both domestic and foreign enterprises energy-saving emission reduction to a new height, make a positive and due contribution.
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