Sodium bicarbonate gathering, transporting and injecting method

The invention discloses a sodium bicarbonate gathering, transporting and injecting method. The sodium bicarbonate gathering, transporting and injecting method comprises the steps that firstly, sodium bicarbonate is manufactured into coarse powder particles through a coal mill; secondly, fine powder is separated, materials with the particle size meeting the standard enter a fine powder screw conveyor, and fine powder which does not meet the standard continues to return to an ultrafine powder mill to be milled; thirdly, the materials with the particle size meeting the standard in the second step are fed to a fine powder pulse bag-type dust collector through the fine powder screw conveyor to be separated, ultrafine particles obtained through separation are conveyed to a storage bin, and gas is exhausted to the air through the pulse bag-type dust collector; fourthly, the ultrafine powder in the storage bin in the third step enters a dual screw metering scale through an intermediate bin, and powder flow is accurately metered; and fifthly, the powder metered in the fourth step firstly enters a pipe distributor to be injected into a flue through an injector, the mixing effect of flue gas and the powder is increased through the flue, so that pollutants in the fuel gas are removed, and the aims of energy saving and emission reduction are achieved.