Decoloring device in brominated polystyrene production

The utility model belongs to the technical field of chemical raw material production, and discloses a decoloring device in brominated polystyrene production, which comprises a decoloring kettle, the upper part of the decoloring kettle is communicated to a decoloring agent storage tank through a pipeline, and a regulating valve and a first stop valve which are arranged on the pipeline, and the bottom of the decoloring kettle is communicated with a material output pipeline; an online chromaticity detector is arranged on the material output pipeline, the material output pipeline at the lower part of the online chromaticity detector is respectively communicated with a waste liquid tank and a circulating material transfer pump through a second stop valve and a third stop valve, and a discharge port of the circulating material transfer pump is communicated with a circulating liquid feed port at the upper part of the decolorizing kettle through a pipeline; and the circulating material transfer pump, the regulating v