The invention belongs to the technical field of steel
smelting decarburization systems, and particularly discloses a method for reducing steam consumption of a
hydrogen-rich carbon circulating
oxygen blast furnace decarburization system. Amine-rich liquid in a flash tank is introduced into a
heat exchanger for heat exchange and temperature rise, and the
heat exchanger adopts
waste heat of
slag flushing water in an iron
smelting process and
flue gas of a
gas heating furnace as heat sources; a
thermometer III detects the temperature of the amine-rich liquid after heat exchange and temperature rise and transmits the temperature to the PLC, whether the temperature of the amine-rich liquid meets the regeneration analysis requirement or not is judged, whether the amine-rich liquid enters the lower portion of the regeneration
tower or not is controlled by controlling a regulating valve III and a regulating valve IV, when the temperature is insufficient, the amine-rich liquid needs to enter a
reboiler to be further heated, and when the temperature meets the regeneration requirement, the temperature of the amine-rich liquid enters the
reboiler to be recovered. The amine-rich liquid directly enters the regeneration
tower to regenerate and release
carbon dioxide, and regeneration and removal of the
carbon dioxide are realized without or with the minimum steam quantity, so that the steam consumption in the
reboiler is reduced, and the problems of high steam consumption and high
decarburization cost for heating the amine-rich liquid in the existing decarburization
system are solved.