Efficient combined desulfurization and denitrification device and method

Abstract

The invention discloses an efficient combined desulfurization and denitrification device and method, and belongs to the technical field of denitrification and devulcanization. According to the device and the method, through the arrangement of a double-layer pneumatic filter screen, the device and the method compared with the prior art have advantages that relatively thicker adsorbent particles can be laid, and after waste gas treatment is conducted for a period of time, different bidirectional air ports can be alternately inflated and deflated at intervals, so that the bulb plate part is continuously bulged and shrunken, and an upper variable net, in contact with adsorbent particles, in the double-layer pneumatic filter screen is driven to be continuously bulged and sunken, and therefore the effect that the adsorbent particles on the screen can be turned over and can be in full contact with waste gas; the relatively high utilization rate of the adsorbent particles can be guaranteed under the condition of relatively thick laying, meanwhile, the replacement frequency of the adsorbent particles can be effectively reduced, and the influence on the denitration and desulfurization efficiency is reduced.

Description

technical field [0001] The invention relates to the technical field of denitrification and desulfurization, and more specifically relates to a high-efficiency combined desulfurization and denitrification device and method. Background technique [0002] Desulfurization and denitrification is one of the important technical measures to prevent and control air pollution. [0003] Desulfurization: generally refers to the process of removing sulfur from fuel before combustion and desulfurization before flue gas emission. It is one of the important technical measures to prevent and control air pollution. Desulfurization methods generally include pre-combustion, combustion and post-combustion desulfurization. Many flue gas desulfurization processes have been widely used in industry, and it also has important practical significance for the treatment of exhaust gas from various boilers and incinerators. [0004] Denitration: In order to prevent excessive NOx pollution of the enviro...

AI Technical Summary

Problems solved by technology

[0005] When the existing denitrification and desulfurization devices are in use, due to the excessive particulate impurities contained in the exhaust gas, the built-in filter in the device is easily blocked. However, the denitrification and desulfurization exhaust gas usually contains a certain degree of toxicity. Desorption treatment increases the difficulty, and will also affect the efficiency of the overall exhaust gas denitrification and desulfurization

[0006] When the denitration and desulfurization towers use solid adsorbents to adsorb impurities such as sulfur and nitrate in the exhaust gas, they usually spread the adsorbents on the channels through which the exhaust gas passes. Adsorption utilization rate, usually the thickness of the adsorbent is relatively thin, but due to the large amount of general industrial waste gas that needs to be treated, the thinner adsorbent needs to be replaced more frequently, which affects the denitrification and desulfurization efficiency

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