Acid-making tail gas purifying and white-removing device

Abstract

The invention relates to the field of flue gas purification, in particular to an acid-making tail gas purification and white gas removal device. Comprising a purification device, a stirring device and a demister, the purification device comprises a purification cylinder, a flow guide plate, a spraying structure and a precipitation structure, the flow guide plate is a vertical plate with a vortex-shaped cross section, and a limestone solution enters a reaction cavity from a liquid inlet in the center of the reaction cavity after being stirred by the stirring device and flows in a vortex shape from inside to outside along the flow guide plate; tail gas enters the reaction cavity from the gas inlet in the outer side of the reaction cavity, advances in a vortex shape from outside to inside along the guide plate, is subjected to purification reaction with a sprayed limestone solution and then is discharged from the gas outlet, and the vortex-shaped reaction cavity increases the space and stroke of gas-liquid reaction under the condition of the same equipment and the same volume. And purification and absorption of sulfur dioxide and other substances in the tail gas are promoted. Meanwhile, the reacted limestone solution flows back to the stirring device to be stirred again, disturbance to precipitates is avoided, and generation of precipitate crystallization is facilitated.

Description

technical field [0001] The invention relates to the field of flue gas purification, in particular to an acid-making tail gas purification and dewhitening device. Background technique [0002] With the development of the times, industrial exhaust gas or automobile exhaust gas is more and more harmful to the environment. The emission of flue gas or exhaust gas requires a series of operations such as dewhitening and purification, so that it can be discharged after meeting the emission standards. as in the air. The purification and whitening of flue gas is mainly to remove and purify harmful substances such as nitrogen oxides, sulfides, various soot particles, aerosols, ultra-fine crystalline salt particles and other harmful substances in the flue gas. [0003] A certain amount of tail gas is often produced in the acid production industry. The acid production tail gas generally contains sulfur dioxide and other harmful gases. Among them, sulfur dioxide is one of the main causes...

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Problems solved by technology

[0004] The invention provides a purification and whitening device for acid-making tail gas to solve the problem of poor mixing effect between acid-making tail gas and slurry

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