Flue gas wet desulfurization cooling device

Abstract

The invention relates to a smoke wet desulphurization cooling device. One discharging port is shared by a first-level cooling system and a second-level cooling system and the first-level cooling system and the second-level cooling system are arranged at the rear end of a cylinder, wherein the first-level cooling system is characterized by aerial fog cooling and is composed of a plurality of spraying guns; the spraying guns are uniformly mounted on a bracket; gas / liquid sources of the spraying guns enter from the upper part and the two sides of the cylinder; the second-level cooling system is composed of a plurality of hollow conical nozzles; the hollow conical nozzles are uniformly mounted on the bracket; a cooling serous fluid enters from the upper part or the bottom part of the cylinder; a first baseboard, a second baseboard, a third baseboard, a fourth baseboard, a fifth baseboard and a sixth baseboard are arranged on the bottom part of the cylinder; all the baseboards are connected in turn; a step which is used for preventing the cooling liquid from flowing backward is formed on the first baseboard; and the third baseboard and the fifth baseboard are arranged obliquely, thereby ensuring that the cooling liquid smoothly flows to the discharging port. The smoke wet desulphurization cooling device has the advantages that the structure is simple, the manufacturing and the mounting are convenient, the arrangement is reasonable, the constructing and running costs are lowered, the real cooling effect is achieved, and the solid foundation is established for the long-term running of a desulphurization system.

Description

technical field [0001] The invention belongs to the technical field of wet desulfurization of sintering flue gas in iron and steel metallurgy, and in particular relates to a cooling device before wet desulfurization of flue gas. Background technique [0002] The traditional cooling device before wet desulfurization of sintering flue gas such as figure 1 , figure 2 shown. [0003] figure 1 The cooling device shown includes a flushing system 11 at the front end of the barrel, a primary cooling system 12 at the front end of the barrel, a waste liquid discharge port 13 , a secondary cooling system 14 at the rear end of the barrel, and a bottom plate 15 of the cooling device. The weakness of this kind of cooling device is that the waste liquid generated by primary cooling (limestone slurry) and secondary cooling (process water) cannot be effectively discharged, especially the waste liquid generated by secondary cooling is still affected by the resistance of flue gas. Difficu...

AI Technical Summary

Problems solved by technology

At such a high temperature, the limestone slurry is quickly solidified and scaled, and then blocks the primary cooling nozzle, causing the primary cooling to fail

Relying on secondary cooling alone to reduce the flue gas temperature to below 70°C (higher than 70°C will burn the internal parts of the absorption tower) requires a large amount of process water, which wastes energy and produces a large amount of waste water, which is neither economical nor economical. Environmental friendly

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