Sodium bicarbonate gathering, transporting and injecting method

Abstract

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.

Description

technical field [0001] The invention relates to a sodium bicarbonate collection, transportation and spraying method, which can complete desulfurization and denitrification processes, and can effectively remove nitrogen oxides, sulfur oxides and other acid gases in flue gas, so that the purified flue gas can be discharged up to the standard. Background technique [0002] In recent years, due to the deteriorating domestic environmental conditions, energy-saving and emission-reduction technologies have been paid more and more attention by the state and have achieved vigorous development. NaHCO3 absorption technology is a highly efficient desulfurization and denitrification integrated technology. This technology can complete the desulfurization and denitrification process in one step, and is an integrated desulfurization and denitrification flue gas purification process. The process has a high removal rate of SO2 (>99.5%), SO3 (>99.5%), NOx (>98%), Mercury (>98%), an...

AI Technical Summary

Problems solved by technology

[0004] In recent years, limited by the high operating cost of NaHCO3 absorption technology, there is almost no corresponding industrial application in China. There are few research reports on NaHCO3 injection and blending technology, and there are no mature industrial products to purchase. Relevant equipment must be developed to realize the technology. closed loop

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