The invention relates to a device and method for preparing a desulfurizing agent, in particular to a device and a method for preparing an alkali
slag liquid desulfurizing agent. Including the alkali
slag conveying pump, the alkali
slag conveying pump is connected to the desanding device through the first pipeline, the top of the desandering device is connected to the thickener through the second pipeline, and the upper part of the thickener is connected to the collector through the first overflow pipeline. The main pipeline is connected, the thickener is connected to the
chlorine reduction tank through the fifth pipeline; the auxiliary agent tank is connected to the middle layer of the
chlorine reduction tank, the washing water pipeline is connected to the lower layer of the
chlorine reduction tank, and the bottom of the chlorine reduction tank is connected to the finished
buffer tank through the sixth Pipeline connection; the upper layer of the chlorine reduction tank is connected with the general collection pipeline through the second overflow pipeline. The preparation method is: gravity sand
settling, thick
sedimentation, washing and dechlorination, and
sedimentation after thickening. The liquid desulfurizer is discharged from the bottom of the chlorine desulfurization tank and stored in a
buffer tank. Compared with the existing technology: the application of
high energy consumption equipment such as filter presses and centrifuges is avoided, the mechanical
solid-liquid separation of alkali slag waste liquid is avoided, and the
flue gas desulfurization effect is effectively improved.