Cyclic semidry process desulfurizer

The invention discloses a circulation semidry process desulfurization device, which comprises a reactor, a horizontal flue connected with the lower part of the reactor, an end enclosure connected with the upper part of the reactor, a dust catcher connected with the output end of the end enclosure. A clean gas outlet of the dust catcher is connected with a chimney by a draught fan. The lower part of the dust catcher is connected with the input end of a conditioning device by an ash discharge component. The input end of the conditioning device is also provided with a water inlet nozzle. The output end of the conditioning device is connected with the lower part of the reactor. The end enclosure, the input end of which is high and the output end is low, is arranged in a leaning way. The device creates advantages for desulphurization reaction in the reactor; and no scale is formed on the inner wall of the reactor; the flow field in the reactor is stable. The leaning arranged end enclosure, the input end of which i