Sintering flue gas circulating fluidized bed desulphurization and denitrification system and method thereof

• Main Authors: YUAN LING, WANG FEI, GENG JISHUANG, LIU FANG, CHEN PENG, WANG YONG, XU WEI
• Format: Patent
• Language: English
• Published: 20.01.2016
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention relates to a sintering flue gas circulating fluidized bed desulphurization and denitrification system and a method thereof. The sintering flue gas circulating fluidized bed desulphurization and denitrification system comprises an electric dust remover, a slaked lime tank, an absorption tower, a cloth bag dust remover, a by-product bin and a chimney, wherein a pulse corona reactor is additionally arranged between the absorption tower and the cloth bag dust remover, the cloth bag dust remover is respectively connected to the by-product bin, the chimney and the material inlet pipeline of the absorption tower through pipelines, and the electric dust remover and the slaked lime tank are connected to the material inlet pipeline of the absorption tower. According to the present invention, sintering flue gas completes a desulphurization reaction in the absorption tower, and the obtained glue gas is discharged from the chimney; the flue gas after the reaction and desulphurization ash are subjected to corona activation through the pulse corona reactor to generate NO2, and the NO2 is absorbed by the desulphurization agent; one part of the desulphurization ash entering the cloth bag dust remover returns to the absorption tower so as to be recycled, and the other part is discharged through the by-product bin; and the effects of desulphurization and denitrification are concurrently provided, such that the newly built denitrification project investment of the enterprise can be reduced, the treatment process can be simplified, the operation cost can be reduced, and the environmental protection is easily achieved.