Dry desulfurization reactor

The utility model discloses a dry desulfurization reactor, and particularly relates to the technical field of desulfurization, the dry desulfurization reactor comprises a desulfurization reactor shell, a rectangular guide support plate is arranged in the desulfurization reactor shell, and a replacement assembly is arranged in the rectangular guide support plate; the replacement assembly comprises a transmission screw arranged in the rectangular guide supporting plate, and the outer wall of the transmission screw is sleeved with a threaded lantern ring supporting block in threaded connection. According to the device, the replacement assembly is arranged, the threaded lantern ring supporting block drives the arc-shaped embedded plate to move downwards, the arc-shaped embedded plate drives the connecting supporting plate to move downwards, the iron oxide desulfurizer mesh plate is pulled, and the iron oxide desulfurizer mesh plate and the arc-shaped embedded plate are disassembled; after disassembly, a new iron