Spray absorber

Abstract

The invention provides a spray absorber used in a desulfurizer, which comprises a flue gas inlet, an absorber cylinder, an inlet connection flue, an outlet connection flue, an outlet flue and a flue gas outlet, wherein, the absorber cylinder keeps a certain distance away from the flue gas inlet; the inlet connection flue is respectively connected with the absorber cylinder and the flue gas inlet;the outlet connection flue and the flue gas inlet are positioned at the same side of the absorber cylinder; the outlet flue is connected with the outlet connection flue; the flue gas outlet is positioned at the tail end of the outlet flue; the inlet connection flue is provided with a first top plate; the absorber cylinder is provided with a second top plate connected with the first top plate; a slurry spray system is arranged in the absorber cylinder; the part of the second top plate closer to the inlet connection flue than the slurry spray system is provided with a flue gas cooling spray pipeline; nozzles are arranged on the flue gas cooling spray pipeline at certain intervals; each nozzle is provided with an outlet; the first top plate is provided with a side baffle and an oblique baffleconnected to the tail end of the side baffle; and the lower edge of the oblique baffle is lower than the outlets of the nozzles. The desulfurizer using the spray absorber has the advantage of reliable operation.

Description

technical field [0001] The invention relates to a spray absorption tower for removing harmful components in gas, in particular to a spray absorption tower for horizontal air flow in the field of flue gas desulfurization. Background technique [0002] In recent years, single-tower wet flue gas desulfurization devices integrating dust removal, cooling, absorption, and oxidation functions have been widely used. In normal operation, in desulfurization projects at home and abroad, the absorption tower in the flue gas desulfurization device mostly adopts a spray absorption tower, that is, only a slurry spray system composed of several spray pipes is installed in the absorption area, and the The nozzle atomizes the absorbent into droplets with extremely small diameters, thereby forming a large liquid-phase reaction surface area, and the flue gas contacts it through the absorption area full of fine droplets and undergoes a chemical reaction, thereby achieving removal of harmful subs...

AI Technical Summary

Problems solved by technology

When the flue gas desulfurization device with the above-mentioned structure is started, the slurry spray system 8' is first opened, and then the booster fan is started, and the high-temperature flue gas enters the absorption tower cylinder 3' immediately, due to the spraying direction of the first spray pipe 81' The flow direction is opposite to that of the flue gas and the flow rate is relatively large. During the time interval between the first spray pipe 81' and the booster fan starting, a large amount of corrosive and fouling tendency is deposited in the flue 2' connected to the entrance of the absorption tower. Even after the booster fan is turned on, a large amount of slurry will still enter the inlet and connect the flue, and in severe cases, it will flow back into the booster fan, affecting the operational reliability of the desulfurization device

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