SPRAY DRYER ABSORPTION PROCESS FOR FLUE GAS WITH ENTRAINED COARSE PARTICLES

摘要

A method of reducing the amount of coarse particles in the exhaust gas stream prior to treatment with a spray drying adsorption process (SDA) is disclosed. The method comprising: directing a flue gas stream with particles of various sizes to a curved portion so that the particles are subjected to a centrifugal effect; Collecting mainly rough particles in the particle collecting means provided on the outer peripheral edge of the curved portion; And dispersing the exhaust gas in which the coarse particles have been reduced into the chamber of the spray-drying adsorption apparatus, characterized in that the particle content of the original exhaust gas stream exceeds 20 g / Nm 3. Also disclosed are an apparatus and a gas distributor for performing the above method. The present invention substantially reduces the overall cost of the facility for treating flue gases that are accompanied by large amounts of coarse particles without using a particle pre-collector on the upstream side of the SDA.