The invention discloses an efficient low-emission high-temperature low-
oxygen hot blast stove and belongs to the technical field of
hot blast stoves in the
metallurgical industry. The efficient low-emission high-temperature low-
oxygen hot blast stove comprises a hot blast stove body, a stop valve, a regulating valve, a
gas pipeline for the hot blast stove body, a
combustion-supporting air pipeline for the hot blast stove body, a high-temperature
mixed gas flue, a low-temperature
flue, a low-temperature preheating
system, a gas header
pipe from a
pipe network, a
combustion-supporting air header
pipe, a
combustion-supporting blower for the hot blast stove body, a heat exchanged
flue, a high-temperature flue, a high-temperature preheated flue, a combustion-supporting air by-pass pipeline, a combustion-supporting air low-temperature preheating pipeline and a combustion-supporting air high-temperature preheating pipeline. The efficient low-emission high-temperature low-
oxygen hot blast stove has the advantages that when only blast stove gas is burnt, high-temperature hot-blast air with the temperature being above 1250 DEG C can be stably provided for users; the generation of
NOx is effectively controlled; the high-temperature low-oxygen combustion is achieved; the efficient low-emission high-temperature low-oxygen hot blast stove is suitable for different metallurgical technological processes, and capable of being flexibly combined with existing hot blast stoves, being used for new projects and overhaul modification projects, and being combined with various low-temperature preheating devices of combustion-supporting air and gases for use; the
exhaust gas afterheat is fully recovered; the heat efficiency is improved; the high blast temperature, high efficiency, low consumption, low content of
NOx and long service life are achieved.