The invention discloses a device for removing SO3 in
coal-fired boiler
flue gas by using white mud and
red mud. The device comprises a
crusher, wherein the material outlet of the
crusher is fixedly connected with an
elevator, the material outlet in the top end of the
elevator is fixedly connected with the material inlet of a material bin through a pipeline I, the material outlet in the bottom endof the material bin is fixedly connected with the material inlet of a spiral feeder through a pipeline II, the material outlet of the spiral feeder is fixedly connected with the material inlet of a
ball mill through a pipeline III, the material outlet of the
ball mill is fixedly connected with the material inlet of a grading
machine through a pipeline IV, the bottom end of the grading
machine is fixedly connected with the material inlet of a spiral returning
machine through a pipeline V, and the material outlet of the spiral returning machine is fixedly connected with the material inlet of theball mill through a pipeline VI. According to the invention, the device is scientific and reasonable in structure,
cam prepare superfine
powder from white mud and
red mud, can make white mud
fine powder and
red mud fine powder fully react with SO3 in
flue gas, has good removal effect on SO3 in
flue gas, can turn waste white mud and red mud into wealth, substantially reduce the
flue gas SO3 removal cost of a
coal-fired boiler, and is suitable for application and popularization.