SNCR-SCR (selective non-catalytic reduction-selective catalytic reduction) combined denitration device applicable to cement kiln

• Main Authors: YE SHA, ZHANG LINGQIN, DING YI, HUANG BIN, LUO TIEXIONG, DU SHUANGWEI
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention provides an SNCR-SCR combined denitration device suitable for a cement kiln, the SNCR-SCR combined denitration device comprises a cyclone separator and a fuel air inlet pipe, one end of the fuel air inlet pipe is communicated with the cyclone separator, one side of the cyclone separator is provided with a flue gas inlet, and the flue gas inlet is connected with a smoke outlet of a boiler; a plurality of groups of reducing agent nozzles are mounted on the inner side of the top end of the cyclone separator, the top end of the cyclone separator is hermetically connected with a smoke exhaust pipe, the other end of the smoke exhaust pipe is connected with a dust remover, the other end of the dust remover is connected with a smoke outlet pipe, and the other end of the smoke outlet pipe is hermetically connected with an SCR reaction device. The SCR reaction device is mounted at the downstream of the dust remover, so that the probability that particulate matters in flue gas enter the SCR reaction device