MULTISTAGE SPRAY COLUMN FOR FUEL GAS DESULFURIZATION

摘要

A multistage spray column for fuel gas desulfurization, comprises a primary desulfurization scrubber (5) and a secondary desulfurization scrubber. The outlet of the primary desulfurization scrubber (5) is connected with the inlet of the secondary desulfurization scrubber. The primary desulfurization scrubber (5) comprises a primary spray layer (4) of the desulfurization absorption slurry used to spray the absorption slurry to be reacted with the fuel gas. The multistage spray column for fuel gas desulfurization further comprises a backflow pipe (8). The backflow pipe (8) is connected between the bottom of the primary dusulfurization scrubber(5) and the secondary desulfurization scrubber, thereby the absorption slurry flows back to the secondary dusulfurization scrubber through the backflow pipe (8).