Tower suction type flue gas recovery device with purification mechanism

Abstract

The tower suction type flue gas recovery device comprises a bottom tower body, a purification tower, a desulfurization mechanism, the purification mechanism and a recovery mechanism, the desulfurization mechanism comprises a lower tower body, a middle tower body, an upper tower body and a top tower body, and the purification mechanism comprises a communicating pipe, a partition plate, a circulating pipe and a branch pipe. The recycling mechanism comprises a partition plate, a first fixing pipe, a dust removal fan and a second fixing pipe. By arranging the purification tower, heat in flue gas can be effectively absorbed, heat energy recycling is effectively achieved, and the resource utilization efficiency is improved; flue gas is filtered in the tower body, so that the purification efficiency of the flue gas can be further realized in the purification tower; by arranging the fixing pipe, circulation of flue gas can be achieved, calcium hydroxide powder is added in the flue gas circulation process so as to improve absorption of sulfides in the flue gas, formed particle impurities can be absorbed through the dust removal fan, and recycling of the sulfides is facilitated.

Description

technical field [0001] The present application relates to a flue gas recovery device, in particular to a tower suction type flue gas recovery device with a purification mechanism. Background technique [0002] The tower-type flue gas recovery device refers to the tower-shaped flue gas absorption device, that is, the absorption tower. The absorption tower is the equipment for realizing the flue gas absorption operation. It is divided into three types according to the gas-liquid contact form. The first type is that the gas is in the form of bubbles. Plate towers, bubbling absorption towers, and stirred bubbling absorption towers dispersed in the liquid phase; the second type is ejectors, venturi tubes, and spray towers in which liquids are dispersed in the gas phase in the form of droplets; the third type is liquids with Packed absorption towers and falling film absorption towers with film-like movement in contact with the gas phase. The gas-liquid two-phase flow mode in the t...

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Problems solved by technology

[0003] Flue gas contains many harmful substances, such as sulfur, carbon monoxide, sulfur dioxide, and dust. Sulfur dioxide is usually absorbed and purified by contacting calcium hydroxide powder with flue gas, but the absorbed sediment is not easy to effectively recycle, which affects the recovery efficiency. When there are too many harmful substances in the flue gas, it is easy to cause incomplete purification, and harmful substances will still be removed in the flue gas, which will affect the purification effect, and the temperature of the flue gas is usually high, and a large amount of heat dissipation will reduce energy utilization efficiency and increase economic efficiency. cost

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