Tail gas purifying device

Abstract

The invention discloses a tail gas purifying device. The tail gas purifying device comprises a primary fine ceramic filter, a urea water spraying head group, a secondary coarse ceramic filter, a dust collection chamber and a dust discharging pipe; the primary fine ceramic filter is installed in a through hole in the upper part of the dust collection chamber; a tail gas outlet pipe is a right-angle elbow, and a horizontal section of the right-angle elbow is also provided with the urea water spraying head group and the secondary coarse ceramic filter. By adopting two-stage purification device, the secondary coarse ceramic filter is loaded with a catalyst for denitration reaction, the urea water spraying head group is arranged in front of the secondary coarse ceramic filter, before the tail gas reaches the secondary coarse ceramic filter, the urea water is adequately mixed with the tail gas, the tail gas discharged from a smoke discharging pipe is filtered by the primary fine ceramic filter so as to remove the dust, the dust is collected to be discharged, the tail gas after being primarily purified is mixed with the urea water through the urea water spraying head group, and the desulphurization and denitration reaction can be collectively carried out through the secondary coarse ceramic filter, so that the secondary purification effect of the tail gas can be realized.

Description

technical field [0001] The invention relates to an industrial air purification technology, in particular to an exhaust gas purification device. Background technique [0002] Environmental issues are a concern all over the world. The quality of air quality directly affects people's health and quality of life. The value of PM2.5 continues to rise. Exhaust gases from automobiles, ships, and power plants contain solid particles, sulfur Pollutants such as oxides and nitrogen oxides are the key factors affecting air quality. The removal of harmful substances before the exhaust gas is discharged into the atmosphere will greatly improve the air quality. [0003] Existing marine diesel engines and power plants seldom have exhaust gas treatment devices, especially marine diesel engines, which burn low-quality fuel, and the exhaust gas is directly discharged into the atmosphere, which is extremely harmful to the environment. In some exhaust devices, the sulfur oxides and nitrogen oxid...

AI Technical Summary

Problems solved by technology

In some exhaust devices, the sulfur oxides and nitrogen oxides cannot be fully mixed with the reactants, and the catalyst will be poisoned by the dust attached to the catalyst surface during the denitrification process, resulting in insufficient reaction of the desulfurization and denitrification reaction

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