Bagasse boiler

The utility model provides a bagasse boiler which comprises a hearth and a tail flue, the tail flue comprises a first horizontal flue, a first vertical shaft flue, a second horizontal flue and a second vertical shaft flue which are sequentially connected, an inlet of the first horizontal flue is connected with an outlet of the hearth, and a high-temperature superheater is arranged in the first horizontal flue. A first ash collecting hopper is arranged at the bottom of the first horizontal flue, a plurality of low-temperature superheaters are arranged in the first vertical shaft flue, a plurality of coal economizers are arranged in the second vertical shaft flue, a third ash collecting hopper is arranged at the bottom of the second vertical shaft flue, and ash blowers are correspondingly installed on the high-temperature superheaters, the low-temperature superheaters and the coal economizers. According to the utility model, the problem that the next-stage heating surface is free from secondary ash deposition i