Wave Separator for Enhancing Gas-Liquid Contact and Its Application

Abstract

The invention discloses a wave evacuator for enhancing gas-liquid contact and an application method thereof, which includes a smoke pipe, and its structural point is that a wave evacuator is provided at the lower port of the smoke pipe immersed in the treatment liquid, and the wave evacuator It consists of a hollow tube, a baffle plate and a corrugation tooth. The baffle plate is set on the outer wall of the hollow tube. The corrugation tooth is arranged under the hollow tube. There is an air groove between them, and the air groove below the hollow tube of the wave trap is not higher than the lower port of the smoke pipe immersed in the treatment liquid. The wave separator of the present invention can form a stable and uniform self-exciting wave layer on the surface of the treatment liquid to complete the purification of flue gas. The gas-liquid contact of the self-shocking wave layer is sufficient, the time is long, and the reaction is complete, so that the efficient purification of flue gas can be realized. the goal of.

Description

technical field [0001] The invention relates to a gas-liquid contact enhancement device in a flue gas purification device, in particular to a gas-liquid contact enhancement device in wet desulfurization technology and its application. Background technique [0002] The principle of flue gas purification and absorption in general flue gas purification devices is as follows: [0003] (1) Spray tower: The absorption slurry is atomized and sprayed into the spray tower through the nozzle, and dispersed into fine droplets to form a huge gas-liquid contact surface, covering the entire section of the spray tower. These droplets are in countercurrent contact with the flue gas in the tower, and mass transfer and absorption reactions occur, and the SO in the flue gas 2 , SO 3 And HCl, HF is absorbed by the liquid. SO 2 The oxidation and neutralization reaction of the absorption product is completed in the oxidation zone at the bottom of the spray tower and finally forms gypsum. In ...

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Problems solved by technology

[0006] In order to increase the gas-liquid contact surface and reaction time of the bubble tower in the prior art, the conventional method adopted is to increase the depth of the smoke pipe into the treatment liquid. The bubble floats in the water to increase the time of the gas-liquid contact reaction. The defect is that only the surface of the bubble reacts with the liquid, and the center of the bubble cannot react with the liquid. In addition, if the immersion in the treatment liquid is too shallow, the reaction will If the time is too short, the purification cannot be complete; if the immersion in the treatment liquid is too deep, the water pressure will be relatively large, the energy consumption will be relatively large, and the cost will be relatively high

[0008] Since the substrate with the air cap must be installed under the spray layer of the spray device, the spray layer belongs to the first-level purification treatment. After the first-level purification treatment, a large part of the flue gas has been purified. Secondary purification treatment. Although the secondary purification treatment will increase the chance and time of gas-liquid combination, the result is still that the gas-liquid reaction is not uniform, and the purification rate will not be greatly improved; its working principle is that the spray tower Improvement, that is, a substrate is added, and a gas cap is added on the substrate. Although it can improve the gas-liquid contact area and increase the gas-liquid contact time to a certain extent, it will increase the resistance of the smoke, especially when there is no spray In the case of the desulfurization device, when the flue gas floods in in large quantities, it will quickly pass through the gas cap and enter the slurry pool of the desulfurization tower. Even if a small part of the gas passes through the pores of the gas cap to form a bubble layer, the volume of the bubbles cannot be made very large. Evenly, it is easy to cause many bubbles to gather together, and they will surface before the gas-liquid contact occurs. The gas-liquid reaction is unstable and uneven, which reduces the purification and absorption efficiency of the flue gas; The air cap will increase the resistance, and at the same time, it is easy to cause the blockage of the air cap. There are certain problems in practical application.

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