Dry-process flue gas desulfurizing method with W-type circulating fluidization

The invention discloses a kind of W type circular liquidizing dry smoke desulfurizing method whose character is that the smoke is divided into two parts, one part is sprayed into the tower with a fixed angle and rate from the lower part of the tower through smoke accelerating device, the other part supplies wind upwards from the lower part of the tower through smoke wind device, then the smoke moves downwards at the lower part of the tower firstly, and turns about 100í½180íÒto flow upwards with the desulfurizing agent particles at the bottom, and forms W shape smoke field and enters the upper parts of the tower, and carries on reaction. The efficiency of the invention can reach to 90í½92%, it also reduces the investing and operation cost.