Desulfurization reactor

The utility model discloses a desulfurization reactor, which relates to the field of flue gas treatment and comprises a desulfurization reactor body, a gas inlet is arranged at the bottom end of the desulfurization reactor body, a gas outlet is arranged at the top end of the desulfurization reactor body, and a connecting pipe is arranged at the top end of the gas inlet. A desulfurization chamber matched with the inner wall of the desulfurization reactor body is arranged on the outer side of the connecting pipe, a shielding cover is arranged at the top of the connecting pipe, a fixing rod is arranged at the top end of the shielding cover, and a supporting assembly matched with the inner wall of the desulfurization reactor body is arranged at the top end of the fixing rod; a heat exchange assembly matched with the desulfurization reactor body is arranged in the middle of the fixed rod in a penetrating manner. Under the matching action of the connecting pipe, the desulfurization chamber and the shielding cover,