Technological method of desulfurization, denitrification, dust removal, white elimination and purification for sintering flue gas

• Main Authors: WEI JINKE, MO LONGGUI, YANG PENG, ZHANG AIHONG, LIU HUA, GAN MUYUAN, WEI LIUCHAN, WU WENSHENG, YIN ZHIQUN, LU FUDE, CHEN YANG, LI LIUSHENG, XIANG XIAOPING, GAN GUIPING, WU DANWEI, HU YANJUN, LIU LIFANG, XIE YUNQIANG, LIANG JIEQUN, HUANG JING
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2019
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention provides a technological method of desulfurization, denitrification, dust removal, white elimination and purification for sintering flue gas. The technological method includes the stepsthat sintering raw flue gas is introduced into a rotary type flue gas heat exchanger and has heat exchange with high-temperature sintering flue gas which enters the rotary type flue gas heat exchangerafter denitrification, heated sintering raw flue gas is heated to 320 DEG C through an after-burning device, then ammonia gas is uniformly sprayed into the heated sintering raw flue gas, then the mixture enters a denitrification reactor for flue gas denitrification, after denitrification, high-temperature sintering raw flue gas returns heat to the sintering raw flue gas through the rotary type flue gas heat exchanger and then enters an ammonia process desulfurization system for cooling, dust removing and desulfurizing, and finally deep dust removal and mist removal are conducted on the flue gas after densulfurization