Venturi ring efficient mass transfer layer absorption tower

Abstract

The invention discloses a Venturi efficient mass transfer layer absorption tower which sets a Venturi efficient mass transfer layer in an empty spray tower. By utilizing Venturi effect, the Venturi efficient mass transfer layer absorption tower can improve the efficiency of gas-liquid mass transfer, ensure uniform gas distribution, increase gas-liquid contact time and area, and reduce liquid-gas ratio and power consumption. The absorption tower is simple in structure, lower in resistance and easy in manufacture and maintenance, and can be widely used in the flue gas desulphurization, dust extraction and chemical fields.

Description

technical field [0001] The patent of the present invention belongs to the Venturi ring gas-liquid mass transfer technology, specifically a Venturi ring high-efficiency mass transfer layer and spray layer combined absorption tower. Background technique [0002] At present, wet flue gas desulfurization usually adopts spray empty tower, which has the characteristics of adapting to large load changes and not easy to block, but the gas-liquid mass transfer efficiency is low, the liquid-gas ratio is high, and the power consumption is large. Venturi gas Liquid mass transfer technology can improve the gas-liquid mass transfer efficiency. For example, Venturi tubes are installed at the flue gas inlet of the absorption tower and Venturi rods are set in the tower to enhance mass transfer. Due to the uneven gas distribution of the flue gas entering the absorption tower, an intermediate airflow velocity is present. Due to the characteristics of low gas flow and high air velocity close to...

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Problems solved by technology

[0002] At present, wet flue gas desulfurization usually adopts spray empty tower, which has the characteristics of adapting to large load changes and not easy to block, but the gas-liquid mass transfer efficiency is low, the liquid-gas ratio is high, and the power consumption is large. Venturi gas is used. Liquid mass transfer technology can improve the efficiency of gas-liquid mass transfer. For example, Venturi tubes are installed at the flue gas inlet of the absorption tower and Venturi rods are installed in the tower to enhance mass transfer. Due to the uneven gas distribution of the flue gas entering the absorption tower, intermediate airflow speeds are present. Due to the characteristics of low airflow and high air velocity close to the tower wall, the above-mentioned Venturi tube and Venturi grille settings cannot meet the characteristics of flue gas distribution, and its mass transfer efficiency is low and the expected effect cannot be achieved.

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