Tail gas combustion device for harmless treatment of waste electrolyte

The invention belongs to the technical field of combustion device structures, and particularly relates to a tail gas combustion device for harmless treatment of waste electrolyte. A carbonization furnace connecting pipe, a burner, an induced draft fan, a flue gas detector, a ventilation pipe, a bent connecting pipe, a flue gas water cooling box unit, an outer side water cooling cover unit and a bent gas outlet pipe are arranged on a fire-resistant combustion box unit, so that 1, a cooling structure which originally needs to be additionally arranged on the flue gas detector is omitted, that is, the flue gas water cooling step is advanced, and the energy consumption is reduced; the cooling operation of the flue gas water cooling box unit can meet the temperature requirements of subsequent cloth bag dust removal and alkali liquor absorption operation, and also can ensure that the flue gas detection operation can be effectively carried out; the smoke water cooling box unit is matched with the outer side water coo