High-efficiency water-saving wet desulphurization absorption tower and application thereof

Abstract

The invention relates to a high-efficiency water-saving wet desulphurization absorption tower, comprising an absorption tower body, a slurry storage section, an absorbent circulating spraying pipeline, an in-tower recycle-water collecting device, an in-tower flue gas condensation device, an out-of-tower recycle-water collecting and precipitating device, a demister, a flue gas inlet and a flue gas outlet, wherein the interior of the part of the absorption tower body located between the flue gas outlet and the flue gas inlet is successively provided with, from bottom to top, the absorbent circulating spraying pipeline, the in-tower recycle-water collecting device, the in-tower flue gas condensation device and the demister, and the out-of-tower recycle-water collecting and precipitating device is arranged out of the absorption tower body. The high-efficiency water-saving wet desulphurization absorption tower provided by the invention can highly efficiently recover condensed water in desulphurized flue gas and demister washing water, so energy is saved and water consumption of wet desulphurization system is reduced; thus, water consumption of desulphurization technology is greatly decreased and water saving effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a wet flue gas desulfurization absorption tower, in particular to a high-efficiency water-saving wet desulfurization absorption tower and its application. Background technique [0002] In the field of flue gas desulfurization for air pollutant control, the wet desulfurization process has the characteristics of mature and reliable technology, high desulfurization efficiency, and strong adaptability to coal types, and is the most widely used flue gas desulfurization technology. However, the large consumption of water resources in the wet desulfurization process is the most prominent problem in recent years. The water consumption of the desulfurization system is mainly composed of the following parts: gypsum carried water and crystal water, desulfurization tower flue gas carried water, absorbing tower flue gas evaporated water, and wastewater discharge water; among th...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method for efficiently recovering the flue gas evaporation water and the flushing water of the mist eliminator in the wet desulfurization system, and recycling them in the desulfurization system, reducing the water consumption of the wet desulfurization system High-efficiency water-saving wet desulfurization absorption tower and its application. The desulfurization absorption tower works on the principle of thermodynamics and is easy to use. It solves the problem of waste of water resources in the wet desulfurization system. desulfurization

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