World’s first flue gas desulfurization and denitrification system for coke ovens put into operation
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On November 6, the coke oven flue gas purification facility for Baosteel Zhanjiang Iron and Steel Coke Plant, designed and supplied (EP) by MCC Coking & Refractory, was officially put into operation, marking the birth of the world’s first industrial demonstration unit for low-temperature desulfurization and denitrification of coke oven flue gas. Low-temperature desulfurization and denitration of coke oven flue gas is a technologically challenging issue recognized worldwide. Through extensive field research, theoretical analysis, and process comparisons, MCC Coking & Refractory has developed the \"dry/semi-dry desulfurization + low-temperature denitrification and dust removal with thermal desorption integrated technology and process.\" This approach addresses the technical challenges associated with desulfurization and denitrification of flue gases from coke ovens: desulfurization is carried out first, followed by dust removal, and then denitrification using low-temperature SCR, thereby ensuring that pollutants are discharged within specified limits. In June 2015, MCC Coking & Refractory officially signed the EP contract for the flue gas purification facilities at Baosteel’s Zhanjiang coke oven plant. The core equipment of this project, the De-NOxDedustingPyrolysis unit, combines functions such as low-temperature denitration, desulfurization and dust removal, as well as in-situ catalyst regeneration. It incorporates a number of new energy-saving and environmental protection technologies, including a combined semi-dry desulfurization and denitration/dust removal technique, air flow distribution technology within the denitration reactor, ammonia/flue gas mixing technology, in-situ regeneration technology for denitration catalysts in a single chamber, negative pressure control technology for coke oven flue gases, and technology for reusing waste heat from clean flue gases. The entire process generates no wastewater; the desulfurization by-products can be recovered by relevant chemical manufacturers or discharged directly, meeting current environmental protection requirements and the technological trends in flue gas treatment. Currently, all systems of the device are operating normally. Once the plant reaches full capacity, the emissions of sulfur dioxide and nitrogen oxides will be less than 30 milligrams per cubic meter and 150 milligrams per cubic meter respectively, with all these values meeting the environmental emission limits specified for special restricted areas in the **Emission Standards for Pollutants in the Coking Chemical Industry**.
Low-temperature denitration does have great potential. I’m not sure if the catalyst developed by MCC Coking Refractories is from the company I contacted before :)
Is it the same process route as the first set at Tetsuo Coking?
What are the desulfurization by-products? How much is there?
Are there any operational data of the factory, as well as parameters related to its operating conditions? I would appreciate it if I could get some information on that.
Tetsuoyu Shinsha is more or less SCR; Tetsuoyu uses the dual-ammonia method
Has it reached the major maintenance period? Don’t you know how remarkable ammonium bisulfate crystals are?
Does anyone have the process flow for low-temperature desulfurization and denitration? Could you send it so I can study it? When first entering the field of environmental protection, everything starts from scratch.
Are there any on-site photos or operating parameters available for study? .
Our company specializes in the production of SCR low-temperature denitration catalysts, and we are eager to engage in exchanges and discussions with friends from various fields to achieve mutual success through cooperation. Pay 13853393822
In 1996, I was involved in the design of projects for recovering waste heat from coke oven flue gas and implementing wet desulfurization in Taiyuan, Shanxi； In 1997, I also worked on dry desulfurization design in Jiangsu. I am eager to exchange ideas with colleagues in the industry and achieve mutual success through cooperation. wx ； sjr3422178