[Ten years of development of chemical equipment] 1858-2015 The world’s first coke oven flue gas desulfurization and denitrification device was settled in Baosteel’s Zhanjiang Iron and Steel Base

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Safety first. Put prevention first, give thumbs up to China’s chemical technology and equipment achievements * * * * * * * * * * * * * * * * * * * * * * [Ten years of development of chemical equipment] Continue to update summary posts, welcome to participate in the discussion https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Forum Network) * * * * * * * * * * * * * * * * * On November 6, 2015, MCC Jiao Nai Engineering Technology Co., Ltd. (hereinafter referred to as: The coke oven flue gas purification facility of the Baosteel Zhanjiang Iron and Steel Coking Project designed/supplied (EP) by MCC Coke Resistance Co., Ltd. was officially put into operation, marking the official birth of the world's first industrial demonstration device for low-temperature desulfurization and denitrification of coke oven flue gas. 　　Low-temperature desulfurization and denitrification of coke oven flue gas is a world-recognized technical problem. After extensive field research, theoretical analysis, and process comparisons, MCC Coke Refractory has developed "dry/semi-dry desulfurization, low-temperature denitrification, dust removal and thermal analysis integrated technology and process", which specifically solves the technical difficulties of desulfurization and denitrification of coke oven flue gases. MCC Coke Refractory’s technical solution adopts flue gas desulfurization first, then dust removal, and then low-temperature SCR denitrification to achieve pollutant emission standards. On the basis of theoretical calculation and analysis, MCC Coke Refractory conducted a series of pilot tests on Tangshan Dafeng 5.5m tamped coke oven, and obtained first-hand coke oven flue gas desulfurization and denitrification data. ； The pilot test results are consistent with the theoretical calculations, achieving ideal desulfurization and denitrification efficiency. 　　It is understood that the project’s de-NOx Dedusting Pyrolysis Integrated Device (De-NOx Dedusting Pyrolysis unit) as the core equipment, it has the functions of low-temperature denitrification, desulfurization and dust removal, and in-situ catalyst regeneration. It applies a number of new environmentally friendly technologies such as semi-dry desulfurization and denitrification and dust removal combined technology, air flow uniformity technology in the denitrification reactor, ammonia/flue gas mixing technology, denitrification catalyst single-chamber in-situ regeneration technology, coke oven flue gas negative pressure control technology, and clean flue gas redistribution waste heat utilization technology. The entire process flow produces no waste water, and the desulfurization by-products can be recycled or directly discharged by relevant chemical manufacturers, which is in line with current environmental protection requirements and the technological development trend of flue gas treatment. 　　Currently, all systems of the coke oven flue gas purification facilities of Baosteel's Zhanjiang Iron and Steel Coking Project are operating normally. After the device reaches production, the emissions of sulfur dioxide and nitrogen oxides will be less than 30mg/Nm3 and 150mg/Nm3 respectively, and all indicators will be met. * * Environmental protection emission limits for special restricted areas stipulated in the "Coking Chemical Industry Pollutant Emission Standards".