Method and device for recycling CO in sintering and pelletizing waste gas

• Main Authors: ZHANG AIHONG, XIONG JUN, TAO CHENG, WU WENSHENG, YIN ZHIQUN, LI LIUSHENG, YANG MINGJIANG, ZHONG GUANGNING, GAN GUIPING, MA CHENGSHENG, ZHOU MAOTAO, LIU LIFANG, MO LIPING, PAN SHIQING, WEI JINKE, MO LONGGUI, SHI CHUGANG, YANG PENG, WU JIANLIN, WEI ZHENNING, GAN MUYUAN, WEI LIUCHAN, LU FUDE, SUN JIXING, CHEN YANG, ZHANG LIQING, GUO LINGHUA, YAN WUHUI, WU DANWEI, RUAN ZHIYONG, LI TING, CHEN GUIMENG, HUANG JING
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2021
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CONSUMING WASTE PRODUCTS BY COMBUSTION; CREMATION FURNACES; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; OVENS; RETORTS; WEAPONS

The invention discloses a method and device for recycling CO in sintering and pelletizing waste gas. The method is implemented through an SCR reactor; the SCR reactor comprises a GGH and a combustor;the combustor is arranged in a flue perpendicular to an outlet in the original flue gas side of the GGH; the combustor performs igniting and combusting in the flue; the high temperature during pipeline coal gas combustion supplementarily combusts CO in sintering and pelletizing flue gas; CO is converted into CO2, the reacted CO2 passes through the SCR reactor along with flue gas and then is discharged out; and meanwhile, a large amount of heat released by CO re-combustion is utilized, so that the fuel gas consumption required by an SCR denitration reactor in sintering and pelletizing flue gastreatment can be saved by 10-50%; the device comprises an SCR reactor; the SCR reactor comprises a GGH and a combustor; the combustor is arranged in a flue perpendicular to an outlet in the original flue gas side of the GGH; t