Wet desulphurization spherical tower, application thereof and wet desulphurization process

Abstract

The wet desulphurization spherical tower comprises a spherical tower body, a supporting structure, a slurry circulating pump and a chimney, a slurry area, an absorption area, a spraying layer and a demisting layer are sequentially arranged in the spherical tower body from bottom to top; the slurry area is provided with an oxidation air pipe, and oxidation air outlets are formed in the oxidation air pipe at intervals; an oxidation air inlet corresponding to the slurry area is formed in the side wall of the spherical tower body, and an oxidation air pipe is arranged in the slurry area through the oxidation air inlet; the spraying layer is provided with a spraying pipeline, and the spraying pipeline is provided with a nozzle; the demisting layer comprises a demister layer; an inlet flue gas channel is tangentially arranged on the side wall of the spherical tower body corresponding to the absorption area; the supporting structure is arranged at the bottom of the spherical tower body; a slurry outlet is formed in the bottom tower wall of the spherical tower body; the slurry circulating pump comprises a suction inlet and an output port, is communicated to the spherical tower body through the suction inlet and the slurry outlet, and is communicated to the spraying layer through the output port; and the top of the spherical tower body is provided with a gas outlet channel. The wet desulphurization spherical tower is small in occupied area, low in investment cost and high in desulphurization efficiency.

Description

technical field [0001] The invention belongs to the technical field of wet desulfurization, and in particular relates to a wet desulfurization spherical tower and its application and a wet desulfurization process. Background technique [0002] With the continuous and rapid development of China's economy, the continuous increase of urbanization and industrialization, the environmental pollution is becoming more and more serious, and the state attaches more and more importance to environmental protection. [0003] At present, the existing boiler flue gas treatment adopts wet desulfurization and dry desulfurization. The most widely used is wet desulfurization, such as limestone desulfurization commonly used in power plants. The size of the absorption tower is basically around (φ10*40m), the amount of steel is large, the space is large, and the ultra-low emission transformation In order to improve the desulfurization efficiency and liquid-gas ratio, the absorption tower continue...

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Problems solved by technology

[0003] At present, the existing boiler flue gas treatment adopts wet desulfurization, dry desulfurization, etc., and the most widely used is wet desulfurization, such as limestone desulfurization commonly used in power plants, etc., but the wet desulfurization absorption towers are all large in size and high in height. The cylindrical absorption tower, the size of the absorption tower is basically about (φ10*40m), the amount of steel is large, and the space is large. In order to improve the desulfurization efficiency and liquid-gas ratio in the ultra-low emission transformation, the absorption tower continues to be increased to meet the ultra-low emission requirement. Emission requirements, investment costs increased significantly

[0004] At present, the upgrading of the desulfurization system generally involves increasing the liquid-gas ratio or adopting the ammonia desulfurization method, etc., but these transformation methods cannot escape the factors such as the increase in the occupied area, the increase in cost, and the increase in maintenance costs after the desulfurization system is upgraded.

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