Absorption tower with inlet water screen

Abstract

The invention relates to an absorption tower with an inlet water screen. The absorption tower with the inlet water screen comprises an absorption tower body and a circulation slurry pump, wherein the outlet of the circulation slurry pump is connected with a slurry circulation pipe; the absorption tower body is provided with a smoke inlet; a slurry spraying pipe is arranged in the absorption tower body and connected with the slurry circulation pipe; a slurry water screen box is arranged above the smoke inlet of the absorption tower body; the slurry water screen box is connected with the absorption tower body through an overflow port; and the slurry water screen box is provided with a slurry inlet pipe for providing slurry for the slurry water screen box. By adopting a circulation slurry discharging pipe and a spraying slurry discharging pipe, slurry can keep flowing in the slurry circulation pipe and the slurry spraying pipe, so that the problem of blockage of the slurry pipeline is solved; besides, slurry is provided for the slurry water screen box so that the slurry water screen is formed at the smoke inlet of the absorption tower and used for pretreating the original smoke; therefore, the desulfurization efficiency of the absorption tower is improved and the use cost is lowered.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to an absorption tower with an inlet water curtain. Background technique [0002] Coal-fired power generation is one of the main ways of coal utilization. Coal-fired thermal power units need to emit a large amount of pollutants, among which SO 2 And dust is more serious harm to the environment, and it is also the main pollutant that needs to be controlled. Therefore, it is necessary to install a desulfurization system at the flue gas discharge of coal-fired power generation. Flue gas desulfurization technologies include wet desulfurization and dry desulfurization, among which wet desulfurization technology is the most widely used. The principle of the wet flue gas desulfurization absorption tower is to use limestone alkaline slurry to spray from top to bottom, the flue gas flows from bottom to top, and the limestone slurry droplets absorb SO in the flue gas during th...

AI Technical Summary

Problems solved by technology

However, due to the high sulfur content of coal in Southwest my country, this requires the desulfurization absorption tower to have a high desulfurization rate, and the absorption tower is currently equipped with a maximum of 6 spray layers no matter whether it is at home or abroad. The spray layer increases the absorption area. Although the dissolution of sulfur dioxide will be strengthened, the dissolution of limestone will not keep up. The cost and power consumption will increase a lot, but the effect of desulfurization will not be improved significantly.

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